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Применить Всего найдено 28754. Отображено 100.
27-10-2016 дата публикации

Дугогасящий реактор

Номер: RU0000165572U1
Автор: Александр Иосифович Лурье, Борис Иванович Базылев
Принадлежит: Борис Иванович Базылев

Дугогасящий реактор, содержащий электромагнитную часть в виде масляного бака с крышкой с вводами, внутри бака имеется выемная часть с магнитопроводом со стержнями и обмотками, отличающийся тем, что в дугогасящий реактор введен блок выключателей и система автоматического управления переключением выключателей, в крышке бака электромагнитной части реактора установлены дополнительные вводы, в баке размещены дополнительные реакторы, которые подключены к дополнительным вводам, к каждому вводу подключён одним контактом выключатель, а другие контакты выключателей подключены к общему сетевому вводу, при этом дополнительные реакторы имеют различные номинальные токи, например, соотношение номинальных токов 1:2:4:8…, номинальный ток первого такого реактора не более нормированного тока ступени регулирования, сумма номинальных токов не менее номинального тока дугогасящего реактора, ток одного из реакторов не более нормированного минимального тока. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 165 572 U1 (51) МПК H02H 9/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ТИТУЛЬНЫЙ (21)(22) Заявка: ЛИСТ ОПИСАНИЯ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2016118526/07, 12.05.2016 (24) Дата начала отсчета срока действия патента: 12.05.2016 (72) Автор(ы): Базылев Борис Иванович (RU), Лурье Александр Иосифович (RU) (73) Патентообладатель(и): Базылев Борис Иванович (RU) R U Приоритет(ы): (22) Дата подачи заявки: 12.05.2016 (45) Опубликовано: 27.10.2016 Бюл. № 30 1 6 5 5 7 2 R U (57) Формула полезной модели Дугогасящий реактор, содержащий электромагнитную часть в виде масляного бака с крышкой с вводами, внутри бака имеется выемная часть с магнитопроводом со стержнями и обмотками, отличающийся тем, что в дугогасящий реактор введен блок выключателей и система автоматического управления переключением выключателей, в крышке бака электромагнитной части реактора установлены дополнительные вводы, в баке размещены дополнительные реакторы, которые подключены к дополнительным вводам, к каждому вводу ...

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Номер записи: 1
09-03-2017 дата публикации

Частотозависимый индуктивно-резистивный элемент на основе композитных проводников для защиты от импульсных перенапряжений и высокочастотных помех

Номер: RU0000169173U1
Автор: Геннадий Петрович Гололобов, Дмитрий Владимирович Суворов, Дмитрий Юрьевич Тарабрин, Петр Михайлович Петров, Сергей Юрьевич Буваков
Принадлежит: Федеральное государственное бюджетное образовательное учреждение высшего образования "Рязанский государственный радиотехнический университет"

Полезная модель относится к области силовой электроники и посвящено разработке электронного компонента, предназначенного для защиты от импульсных перенапряжений в цепях питания электронной аппаратуры и подавления высокочастотных помех, и может быть использовано для улучшения эксплуатационных и потребительских свойств устройств защиты от импульсных перенапряжений и ВЧ-фильтров для силовых цепей.Сущность полезной модели заключается в создании частотозависимого индуктивно-резистивного элемента, представляющего собой свернутую в спираль ленту, имеющую композитную структуру. Внутренний слой ленты (2) выполнен из неферромагнитного материала высокой электрической проводимостью. Внешний слой (1) выполнен из неферромагнитного материала с низкой электрической проводимостью. Для обеспечения электрической изоляции между соседними слоями введен диэлектрический слой (3). Эффективное увеличение сопротивления элемента с ростом частоты обеспечивается за счет скин-эффекта и эффекта близости перераспределения тока и «выталкивание» в область с низкой электропроводностью. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 169 173 U1 (51) МПК H02H 9/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21)(22) Заявка: 2016117718, 04.05.2016 (24) Дата начала отсчета срока действия патента: 04.05.2016 09.03.2017 Приоритет(ы): (22) Дата подачи заявки: 04.05.2016 Адрес для переписки: 390005, г. Рязань, ул. Гагарина, 59/1, ФГБОУ ВО "РГРТУ", патентная служба (56) Список документов, цитированных в отчете о поиске: US5235311 A, 10.08.1993. RU 2237333 C2, 27.09.2004. RU 2284622 C1, 27.09.2006. CN 103036221 A, 10.04.2013. U 1 1 6 9 1 7 3 R U (57) Формула полезной модели Частотозависимый индуктивно-резистивный элемент, представляющий собой токопроводящую ленту, свернутую в спираль, соседние витки которой электрически изолированы друг от друга, отличающийся тем, что токопроводящая лента имеет внутренний слой из неферромагнитного материала ...

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Номер записи: 2
25-04-2018 дата публикации

Электровоз переменного тока с асинхронными тяговыми двигателями

Номер: RU0000179025U1
Автор: Вячеслав Анатольевич Ушаков, Константин Андреевич Вахрушев, Павел Петрович Неустроев
Принадлежит: Общество с ограниченной ответственностью "Уральские локомотивы"

Полезная модель направлена на повышение защищенности тягового оборудования электровоза переменного тока с асинхронными тяговыми двигателями от бросков токов и напряжений, эксплуатационной надежности и безотказности электровоза. Указанный технический результат достигается тем, что в электровозе переменного тока с асинхронными тяговыми двигателями, состоящем из одной или более идентичных секций, каждая из которых содержащая тележки с интегрированным в них тяговым приводом с асинхронными электродвигателями, кузов, внутри которого размещены тяговые трансформаторы, тяговые преобразователи, электрическая аппаратура, силовые цепи, а на крыше кузова - токоприемник, главный выключатель, ограничитель грозовых и коммутационных перенапряжений в цепи токоприемника, после главного выключателями параллельно к тяговым трансформаторам дополнительно подключен ограничитель коммутационных перенапряжений. При этом ограничитель коммутационных перенапряжений размещен в машинном отделении секции электровоза, в защитной оболочке. Функцию защитной оболочки выполняет один из шкафов машинного отделения секции электровоза. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 179 025 U1 (51) МПК B60L 9/28 (2006.01) B61C 3/00 (2006.01) H02H 9/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК B60L 9/28 (2017.08); B61C 3/00 (2017.08); H02H 9/046 (2017.08); B60L 2200/26 (2017.08) (21)(22) Заявка: 2017120426, 09.06.2017 (24) Дата начала отсчета срока действия патента: Дата регистрации: (73) Патентообладатель(и): Общество с ограниченной ответственностью "Уральские локомотивы" (RU) 25.04.2018 (56) Список документов, цитированных в отчете о поиске: RU 127017 U1, 20.04.2013. RU (45) Опубликовано: 25.04.2018 Бюл. № 12 1 7 9 0 2 5 R U 2351484 C1, 10.04.2009. RU 2565634 C1, 20.10.2015. EP 2848452 A2, 18.03.2015. (54) ЭЛЕКТРОВОЗ ПЕРЕМЕННОГО ТОКА С АСИНХРОННЫМИ ТЯГОВЫМИ ДВИГАТЕЛЯМИ (57) Реферат: Полезная модель направлена на повышение преобразователи, ...

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Номер записи: 3
02-07-2018 дата публикации

Интегральный датчик перегрева ключа

Номер: RU0000180943U1
Автор: Андрей Михайлович Цырлов, Михаил Александрович Черкасов
Принадлежит: Акционерное общество "Протон" (АО "Протон")

Полезная модель относится к коммутационной технике и может быть использована в качестве встроенного устройства контроля управления силовым ключевым устройством. Технический результат заключается в точном контроле перегрева тепловыделяющего кристалла ключевого МОП транзистора, расположенного на одном кристалле с сенсором.Для достижения данного технического результата встроенный температурный датчик, формирователь опорного напряжения, аналоговый компаратор сигналов и схема управления затвором МОП транзистора выполнены в едином КМОП базисе и располагаются на одном кристалле с ключевым МОП транзистором, при этом настройка и регулировка температуры перегрева устанавливаются посредством дополнительного вывода. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 180 943 U1 (51) МПК H02H 9/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК G01K 7/00 (2006.01); H01L 27/00 (2006.01); H03M 1/00 (2006.01); H02H 9/00 (2006.01); H03K 17/00 (2006.01) (21)(22) Заявка: 2017132135, 13.09.2017 13.09.2017 (73) Патентообладатель(и): Акционерное общество "Протон" (АО "Протон") (RU) Дата регистрации: 02.07.2018 (56) Список документов, цитированных в отчете о поиске: RU 2244936 C2, 20.01.2005. RU (45) Опубликовано: 02.07.2018 Бюл. № 19 1 8 0 9 4 3 R U (54) ИНТЕГРАЛЬНЫЙ ДАТЧИК ПЕРЕГРЕВА КЛЮЧА (57) Реферат: Полезная модель относится к коммутационной формирователь опорного напряжения, технике и может быть использована в качестве аналоговый компаратор сигналов и схема встроенного устройства контроля управления управления затвором МОП транзистора силовым ключевым устройством. Технический выполнены в едином КМОП базисе и результат заключается в точном контроле располагаются на одном кристалле с ключевым перегрева тепловыделяющего кристалла МОП транзистором, при этом настройка и ключевого МОП транзистора, расположенного регулировка температуры перегрева на одном кристалле с сенсором. устанавливаются посредством дополнительного Для достижения ...

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Номер записи: 4
26-07-2018 дата публикации

Электровоз переменного тока с асинхронными тяговыми двигателями

Номер: RU0000181752U1
Автор: Андрей Вячеславович Ушаков, Вячеслав Анатольевич Ушаков, Константин Андреевич Вахрушев
Принадлежит: Общество с ограниченной ответственностью "Уральские локомотивы"

Полезная модель направлена на повышение защищенности тягового оборудования электровоза переменного тока с асинхронными тяговыми двигателями от бросков токов и напряжений, эксплуатационной надежности и безотказности электровоза. Указанный технический результат достигается тем, что в электровозе переменного тока с асинхронными тяговыми двигателями, состоящем из одной секции, которая содержит тележки с интегрированным в них тяговым приводом с асинхронными электродвигателями, кузов, внутри которого размещены тяговые трансформаторы, тяговые преобразователи, электрическая аппаратура, силовые цепи, а на крыше кузова - токоприемники, главный выключатель, ограничитель грозовых и коммутационных перенапряжений в цепи токоприемника, после главного выключателями параллельно к тяговым трансформаторам дополнительно подключен ограничитель коммутационных перенапряжений. При этом ограничитель коммутационных перенапряжений размещен в машинном отделении секции электровоза, в защитной оболочке. Функцию защитной оболочки выполняет один из шкафов машинного отделения секции электровоза. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 181 752 U1 (51) МПК B61C 3/00 (2006.01) B60L 9/28 (2006.01) H02H 9/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК B61C 3/00 (2006.01); B60L 9/28 (2006.01); H02H 9/04 (2006.01) (21)(22) Заявка: 2018105212, 12.02.2018 (24) Дата начала отсчета срока действия патента: Дата регистрации: 26.07.2018 09.06.2017 (56) Список документов, цитированных в отчете о поиске: RU 127017 U1, 20.04.2013. RU 2379202 C2, 20.01.2010. RU 2422299 C1, 27.06.2011. WO 96/09675 A1, 28.03.1996. (45) Опубликовано: 26.07.2018 Бюл. № 21 1 8 1 7 5 2 R U (54) ЭЛЕКТРОВОЗ ПЕРЕМЕННОГО ТОКА С АСИНХРОННЫМИ ТЯГОВЫМИ ДВИГАТЕЛЯМИ (57) Реферат: Полезная модель направлена на повышение аппаратура, силовые цепи, а на крыше кузова защищенности тягового оборудования токоприемники, главный выключатель, электровоза переменного тока с асинхронными ...

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Номер записи: 5
25-09-2018 дата публикации

Высоковольтное токоограничивающее устройство на основе высокотемпературной сверхпроводимости

Номер: RU0000183512U1
Автор: Дарья Александровна Горбунова, Дмитрий Викторович Сотников, Кирилл Александрович Бабурин
Принадлежит: Закрытое акционерное общество "СуперОкс" (ЗАО "СуперОкс")

Полезная модель относится к области электротехники, в частности к высоковольтным токоограничивающим сильноточным устройствам на основе высокотемпературной сверхпроводимости (ВТСП ТОУ) и может найти применение для последовательного включения в сеть 220 кВ для ограничения токов короткого замыкания. ВТСП ТОУ, содержит горизонтальный цилиндрический криостат с внутренней и внешней стенками, образующими объем для размещения криогенной среды; установленную в криостате ВТСП сборку соосно размещенных токоограничивающих модулей ограничителя тока; колодцы, размещенные в верхней части криостата, входящие в его состав; вертикально установленные в колодцах подводящий и отводящий токовводы, где каждый токоввод одним концом соединен со сборкой упомянутых модулей, а вторым концом - с электрической сетью, при этом, каждый упомянутый токоввод представляет собой электрический проводник, содержащий последовательно расположенные изолирующую оболочку, выполненную из пропитанного электроизоляционной смолой нетканого гидрофобного материала и монолитную защитную оболочку из диэлектрического эластичного материала. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 183 512 U1 (51) МПК H02H 9/02 (2006.01) H01L 39/16 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК H02H 9/02 (2006.01); H01L 39/16 (2006.01) (21)(22) Заявка: 2018122672, 21.06.2018 (24) Дата начала отсчета срока действия патента: Дата регистрации: (73) Патентообладатель(и): Закрытое акционерное общество "СуперОкс" (ЗАО "СуперОкс") (RU) 25.09.2018 (56) Список документов, цитированных в отчете о поиске: RU 2453961 C1, 20.06.2012. RU (45) Опубликовано: 25.09.2018 Бюл. № 27 1 8 3 5 1 2 R U 89783 U1, 10.12.2009. RU 2126568 C1, 20.02.1999. US 5063472 A1, 05.11.1991. (54) ВЫСОКОВОЛЬТНОЕ ТОКООГРАНИЧИВАЮЩЕЕ УСТРОЙСТВО НА ОСНОВЕ ВЫСОКОТЕМПЕРАТУРНОЙ СВЕРХПРОВОДИМОСТИ (57) Реферат: Полезная модель относится к области верхней части криостата, входящие в его состав; электротехники, в частности к ...

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Номер записи: 6
24-12-2018 дата публикации

Драйвер силового модуля

Номер: RU0000185902U1
Автор: Александр Владимирович Поярков, Василий Иванович Томин, Игорь Павлович Воронин, Леонид Леонидович Круглов, Павел Анатольевич Воронин
Принадлежит: Публичное акционерное общество "Научно-производственное объединение "ЭНЕРГОМОДУЛЬ", Российская Федерация, от имени которой выступает Министерство промышленности и торговли Российской Федерации

Предложение относится к области силовой электроники, в частности к формирователям импульсов управления ключевыми компонентами силовых схем, и может быть использовано при проектировании силовых модулей, в том числе интеллектуальных. Технический результат предлагаемого устройства заключается в том, что устройство питается от однополярного источника постоянного напряжения, формируя при этом двухполярный сигнал управления, устройство защищено от сквозных токов между транзисторами блока усиления мощности сигнала управления, устройство обладает возможностью изменения зарядного и разрядного тока в выходной цепи импульса управления. Технический результат достигается тем, что блок усиления мощности выходного сигнала управления выполнен по схеме моста, нижние плечи которого представляют собой ключи, присоединенные к общей шине питания, верхние плечи моста образованы последовательным соединением резисторов ограничения тока и ключей, присоединенных к положительной шине питания, при этом диагональ моста образует выходную цепь драйвера силового модуля. 3 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 185 902 U1 (51) МПК H02M 1/08 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК H02M 1/08 (2018.08); H02H 9/00 (2018.08) (21)(22) Заявка: 2018135987, 11.10.2018 (24) Дата начала отсчета срока действия патента: Дата регистрации: 24.12.2018 (45) Опубликовано: 24.12.2018 Бюл. № 36 Адрес для переписки: 109052, Москва, ул. Смирновская, 4, стр. 2, ПАО "НПО "ЭНЕРГОМОДУЛЬ", генеральному директору Т.И. Мартыновой (73) Патентообладатель(и): Российская Федерация, от имени которой выступает Министерство промышленности и торговли Российской Федерации (RU), Публичное акционерное общество "Научно-производственное объединение "ЭНЕРГОМОДУЛЬ" (RU) (56) Список документов, цитированных в отчете о поиске: RU 2641661 C2, 19.01.2018. RU U 1 1 8 5 9 0 2 R U (54) ДРАЙВЕР СИЛОВОГО МОДУЛЯ (57) Реферат: Предложение относится к области силовой электроники ...

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Номер записи: 7
25-11-2019 дата публикации

Токоограничивающее устройство на основе высокотемпературной сверхпроводимости

Номер: RU0000194013U1
Автор: Анастасия Игоревна Тельнова, Дмитрий Викторович Сотников, Кирилл Александрович Бабурин, Ленар Робертович Сабиров
Принадлежит: Закрытое акционерное общество "СуперОкс" (ЗАО "СуперОкс")

Полезная модель относится к области электротехники, в частности к высоковольтному оборудованию - высокотемпературным сверхпроводящим токоограничивающим устройствам (далее ВТСП ТОУ), работающим в среде жидкого азота в сетях 35-750 кВ. Высоковольтное токоограничивающее устройство на основе высокотемпературной сверхпроводимости, содержащее: горизонтальный цилиндрический криостат; размещенную в криостате сборку соосно расположенных сверхпроводящих токоограничивающих модулей, нанизанных на центральную опору, где упомянутая сборка установлена, по меньшей мере, на двух парах опорных изоляторов, изоляционная часть которых выполнена в форме стержней с частично гофрированной внешней поверхностью, при этом изоляторы в каждой паре одним концом закреплены на центральной опоре, а другим - прикреплены к внутренней поверхности криостата и подводящий и отводящий изолированные токовводы, где каждый токоввод одним концом соединен со сборкой упомянутых модулей, а вторым концом - с электрической сетью. Полезная модель позволяет устранить рост напряженности электрического поля между сборкой токоограничивающих модулей и заземленными стенками криостата и увеличить электрическую прочность ВТСП ТОУ. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 194 013 U1 (51) МПК H02H 9/02 (2006.01) H01L 39/16 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК H02H 9/02 (2019.08); H01L 39/16 (2019.08) (21)(22) Заявка: 2019127988, 05.09.2019 (24) Дата начала отсчета срока действия патента: Дата регистрации: 25.11.2019 (45) Опубликовано: 25.11.2019 Бюл. № 33 1 9 4 0 1 3 R U (54) ТОКООГРАНИЧИВАЮЩЕЕ УСТРОЙСТВО НА ОСНОВЕ ВЫСОКОТЕМПЕРАТУРНОЙ СВЕРХПРОВОДИМОСТИ (57) Реферат: Полезная модель относится к области изоляционная часть которых выполнена в форме электротехники, в частности к высоковольтному стержней с частично гофрированной внешней оборудованию высокотемпературным поверхностью, при этом изоляторы в каждой паре сверхпроводящим токоограничивающим одним ...

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Номер записи: 8
19-11-2021 дата публикации

Устройство защиты оборудования от импульсных перенапряжений комбинированного типа

Номер: RU0000207848U1
Автор: Александр Владимирович Мельников, Александр Сергеевич Рябов, Алексей Владимирович Николаев, Алина Олеговна Шелег, Валентин Георгиевич Филиппов, Валерий Петрович Мирошниченко, Денис Сергеевич Кубраков, Иван Николаевич Кузьмин, Николай Михайлович Лепехин, Ольга Васильевна Ловенецкая, Сергей Васильевич Иванов, Эдуард Николаевич Фоминич
Принадлежит: Федеральное казенное учреждение Войсковая часть 25776

Полезная модель относится к силовой коммутационной аппаратуре. Техническим результатом заявляемого технического решения является повышение надежности. Устройство содержит блок ограничения, блок поджига, индикатор количества срабатываний, при этом блок ограничения установлен на металлической пластине, для трехфазной сети три однофазных устройства защиты оборудования от импульсных перенапряжений своими металлическими пластинами установлены параллельно на общем металлическом основании, которое заземлено, индикатор количества срабатываний подсоединен кабелем к датчику тока, установленному в цепи управляемого искрового разрядника, металлические пластины через общее металлическое основание заземлены, блок ограничения оборудован входной клеммой, блок ограничения в собранном виде поверх металлической прямоугольной пластины залит электроизоляционным компаундом, блок поджига в собранном виде также залит электроизоляционным компаундом и жестко прикреплен к блоку ограничения, содержащего две идентичных параллельно соединенных колонки из дисков нелинейных резисторов, которые электрически и механически соединены параллельно и сжаты между собой резьбовыми стяжками с помощью электроизоляционных планок. 1 з.п. ф-лы, 11 ил., 2 табл. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 207 848 U1 (51) МПК H02H 9/00 (2006.01) H01C 7/12 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК H02H 9/06 (2021.02); H01C 7/12 (2021.02) (21)(22) Заявка: 2021104208, 19.02.2021 (24) Дата начала отсчета срока действия патента: Дата регистрации: 19.11.2021 (45) Опубликовано: 19.11.2021 Бюл. № 32 Адрес для переписки: 117041, Москва, ул. Адмирала Лазарева, 43, кв. 40, Борисову Э.В. 2 0 7 8 4 8 U 1 (56) Список документов, цитированных в отчете о поиске: RU 2459333 C1, 20.08.2012. RU 57656 U1, 27.09.2006. RU 43109 U1, 27.12.2004. GB 1485679 A, 14.09.1977. US 5272588 A, 21.12.1993. (54) Устройство защиты оборудования от импульсных перенапряжений ...

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Номер записи: 9
12-01-2012 дата публикации

Secondary ESD Circuit

Номер: US20120008243A1
Автор: Albert Jan Huitsing, Taede Smedes
Принадлежит: Individual

An integrated circuit device provides electrostatic discharge (ESD) protection, as may be applicable to circuits susceptible to ESD in conjunction with, or prior to, activation of a primary ESD circuit for dissipating an ESD. In connection with various example embodiments, primary and secondary ESD circuits discharge electrostatic pulses as may be present at a power input pad, with the secondary ESD circuit separated from the input pad by an impedance circuit. The secondary ESD circuit is configured to actively mitigate an electrostatic pulse present in conjunction with, or before, the activation of the primary ESD circuit, in response to an input voltage level achieving a threshold level. In some implementations, the secondary ESD circuit activates to mitigate some or all of the presentation of an electrostatic pulse to a circuit that competes with the primary ESD circuit, for drawing charge from a common node (e.g., a power supply pad).

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Номер записи: 10
19-01-2012 дата публикации

Voltage clamp circuit and integrated circuit incorporating same

Номер: US20120013383A1
Автор: Koichi Morino, Shinichi Kubota, Takaaki Negoro
Принадлежит: Ricoh Co Ltd

A voltage clamp circuit includes a power supply, a first element connected with the power supply to output a constant current, a third element configured to allow a current to pass through when a voltage of a predetermined value or more is applied; and a second element configured to output a voltage according to a voltage generated by the first and third elements.

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Номер записи: 11
02-02-2012 дата публикации

Active ac inrush current control

Номер: US20120026636A1
Автор: Huazhen Chai, Waleed Said
Принадлежит: Hamilton Sundstrand Corp

Active inrush current control includes activating a load, the activating causing inrush current to flow, switching a semiconductor switching device to a current limiting state in response to the inrush current flow, the current limiting state being one of at least three states of the semiconductor switching device and the current limiting state dissipating the inrush current, and switching the semiconductor device to a full current flow state in response to the dissipating, the full current flow state not inhibiting current flow.

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Номер записи: 12
09-02-2012 дата публикации

Distributed maximum power point tracking system, structure and process

Номер: US20120032665A1
Автор: II Argil E. Shaver, Ronald M. Newdoll
Принадлежит: NEWDOLL ENTERPRISES LLC

Distributed maximum power point tracking systems, structures, and processes are provided for power generation structures, such as for but not limited to a solar panel arrays. In an exemplary solar panel string structure, distributed maximum power point tracking (DMPPT) modules are provided, such as integrated into or retrofitted for each solar panel. The DMPPT modules provide panel level control for startup, operation, monitoring, and shutdown, and further provide flexible design and operation for strings of multiple panels. The strings are typically linked in parallel to a combiner box, and is then toward and enhanced inverter module, which is typically connected to a power grid. Enhanced inverters are controllable either locally or remotely, wherein system status is readily determined, and operation of one or more sections of the system are readily controlled. The system provides increased operation time, and increased power production and efficiency, over a wide range of operating conditions.

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Номер записи: 13
29-03-2012 дата публикации

Low Voltage Electrostatic Discharge Protection

Номер: US20120075758A1
Автор: William PUGSLEY
Принадлежит: Cambridge Silicon Radio Ltd

A protection circuit for protecting components from an electrostatic discharge at a node in an integrated circuit having a first set of electronic components of a first voltage sensitivity, the protection circuit comprising: detection circuitry arranged to detect an electrostatic discharge at the node; a first switching device connected between the first set of components and the node; and a second switching device connected between the node and ground; wherein, when an electrostatic discharge is detected at the node, the first switching device is configured to isolate the first set of components from the node and the second switching device is configured to provide a current path from said node to ground.

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Номер записи: 14
19-04-2012 дата публикации

Field device for a process automation system having an intrinsically safe power supply device

Номер: US20120091809A1
Автор: Harald U. Müller, Yannick MARET
Принадлежит: ABB TECHNOLOGY AG

The disclosure relates to a field device of a process automation system, having at least one first intrinsically safe power supply unit, which provides locally stored electrical energy in an integrated storage element for supplying power to an electronics unit for process control. To supply power to intrinsically safe field devices from locally stored electrical energy in line with demand, it is proposed that in addition, at least one additional intrinsically safe power supply unit is integrated therein, which is fed by a power generation unit providing locally renewable electrical energy.

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Номер записи: 15
26-04-2012 дата публикации

Electrostatic discharge protection circuit

Номер: US20120099230A1
Автор: Jung-Eon Moon
Принадлежит: Hynix Semiconductor Inc

An electrostatic discharge protection circuit includes a diode chain coupled between a power supply voltage end and a control node, a control voltage generator configured to generate a control voltage in response to a first current flowing through the diode chain, and a discharger configured to discharge a second current from the power supply voltage end to a ground voltage end in response to the control voltage, wherein the diode chain includes a plurality of P-well regions formed in an N-well region, diodes formed in the respective P-well regions, and a resistor coupled between the diodes.

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Номер записи: 16
17-05-2012 дата публикации

Circuit arrangement for a control device

Номер: US20120120535A1
Автор: Klaus Dressler, Ralph Bauer
Принадлежит: ROBERT BOSCH GMBH

The invention relates to a circuit arrangement ( 10 ) for a control device, and a method for operating said circuit arrangement ( 10 ). The circuit arrangement ( 10 ) comprises a first field-effect transistor ( 12 ) actuating the control device, and a comparator, which compares the voltage provided for actuating the control device with a threshold voltage, and which actuates a timed operation of the first field-effect transistor ( 12 ) via a control unit ( 20 ) if the threshold voltage is exceeded.

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Номер записи: 17
17-05-2012 дата публикации

Circuit Protection Device

Номер: US20120120538A1
Автор: Katsuaki Suzuki
Принадлежит: Katsuaki Suzuki

There is provided a circuit protection device with further improved possibility of protecting the circuit. In the circuit protection device ( 1 ) includes a bimetal switch ( 4 ) and a PTC component ( 2 ), the bimetal switch and the PTC device are electrically connected in parallel, and the PTC component has a resistance after activation that is equal to or less than 1.1 times as large as a specific resistance of an electric circuit to which the circuit protection device is to be incorporated, which specific resistance is calculated based on the rated voltage and the rated current of the electrical circuit from the following equation (1): Rated Voltage/Rated Current=Specific Resistance  (1).

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Номер записи: 18
07-06-2012 дата публикации

Overvoltage Protection for Inverters that Comprise an EMC Filter at Their Input End

Номер: US20120140363A1
Автор: Adrian Häring, Andreas Jeppe, Frank Greizer, Henrik Wolf, Sven Bremicker, Torben Westphal
Принадлежит: SMA Solar Technology AG

In an overvoltage protection apparatus before an inverter configured to feed electric energy from a DC voltage source into an AC power grid, the overvoltage protection apparatus includes a DC voltage input stage. The DC voltage input stage includes, at least two current-carrying lines and an EMC filter including interference suppressing capacitors and interference suppressing inductors, and surge arrestors configured to divert overvoltages with respect to ground are connected to the current-carrying lines after the EMC filter, from a point of view of the DC voltage source.

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Номер записи: 19
14-06-2012 дата публикации

TBF Compatible with Input Power Including GFCI

Номер: US20120147509A1
Автор: Bahram Mechanic, Tooraj Faridi
Принадлежит: SMARTPOWER SYSTEMS Inc

A protective circuit having hot, neutral, and ground leads arranged to be placed between corresponding hot, neutral, and ground leads of a power utility outlet and corresponding hot, neutral, and ground leads of electrical apparatus.

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Номер записи: 20
21-06-2012 дата публикации

Fault current limiter with saturated core

Номер: US20120153927A1
Автор: Alexander Friedman, Shuki Wolfus, Vladimir Rozenshtein, Yossef Yeshurun, Zvi Bar-Haim
Принадлежит: Bar Ilan Research and Development Co Ltd

A three-phase current limiter ( 30 ) for an alternating current system includes an AC magnetic circuit having at least one AC coil ( 35 R 1, 35 S 1, 35 T 1 ) for each phase of a 3-phase AC supply wound on a saturable ferromagnetic core and configured to subject respective AC coils for each phase to a common magnetic flux, and a DC magnetic circuit ( 34 a, 34 b ) for biasing the AC magnetic circuit into saturation at normal conditions. In use the AC coils are connected in series with a load and during alternate half cycles of the AC supply at least one of the AC coils produces a magnetic field that opposes a magnetic field of the DC magnetic circuit. The AC coils ( 35 R, 35 S, 35 T) for each phase are configured so that at least one of the AC coils exhibits unbalanced magnetic impedance relative to remaining ones of the AC coils for each phase.

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Номер записи: 21
21-06-2012 дата публикации

Programmable Lightning Detector

Номер: US20120154971A1
Автор: Brian Keith Brashear
Принадлежит: ILD Tech LLC

A system and method for protecting devices and equipment from lightning strikes is disclosed. The protection device provides real-time monitoring of local atmospheric conditions to protect sensitive power-supply and control equipment. Embodiments of the device may be triggered by the detection of an actual lightning strike or an abrupt change in atmospheric charging that could indicate the presence of lightning conditions. The device provides lightning protection by isolating control, power, and signal circuits from external conductors and placing them in safe operating conditions for the duration of lightning strike event. Embodiments of the device may include onboard surge suppression in addition to lightning detection and protection. The device may be integrated into customer control equipment and is fully automatic. Without requiring operator intervention, the system restores normal operation when lightning events are no longer detected.

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Номер записи: 22
12-07-2012 дата публикации

Semiconductor ESD Circuit and Method

Номер: US20120176710A1
Автор: Adrien Ille, Cornelius Christian Russ, David Alvarez, Krzysztof Domański, Wolfgang Soldner
Принадлежит: INFINEON TECHNOLOGIES AG

In an embodiment, an electrostatic discharge (ESD) circuit for providing protection between a first node and a second node includes a first MOS device having a first source/drain coupled to a first node, and a second source/drain coupled to an intermediate node. The ESD circuit also includes a first capacitor coupled between a gate of the first MOS device and the first node, a first resistor coupled between the gate of the first MOS device the intermediate node, a second MOS device having a first source/drain coupled to the intermediate node, and a second source/drain coupled to the second node, a second capacitor coupled between a gate of the second MOS device and the first node, and a second resistor coupled between the gate of the second MOS device and the second node.

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Номер записи: 23
19-07-2012 дата публикации

Semiconductor module and system including the same

Номер: US20120182653A1
Автор: Joo-Han LEE, Seong-Chan Han, Yong-Hyun Kim, Young-soo An
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A semiconductor module includes a printed circuit board, at least one on-board device unit coupled between at least one voltage line and a power line. The at least on-board device unit is mounted on the printed circuit board. At least one electrostatic discharge protection circuit unit, configured to protect the at least one on-board device unit from an electrostatic discharge that occurs in the at least one voltage line, is coupled to the at least one voltage line.

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Номер записи: 24
19-07-2012 дата публикации

Esd protection against charge coupling

Номер: US20120182663A1
Автор: Christopher A. Bennett, Taeghyun Kang
Принадлежит: Individual

This document discusses among other things apparatus and methods for reducing ESD damage to buffer circuits. In an example, an output buffer can include an output, a first transistor configured to couple the output to a high logic supply rail, a second transistor configured to couple the output node to a low logic supply rail, pre-driver logic configured to drive a gate of the first transistor and a gate of the second transistor, and a first resistor configured to reduce electrostatic discharge (ESD) induced current between the first transistor and the pre-driver logic.

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Номер записи: 25
26-07-2012 дата публикации

Device for Starting an Internal Combustion Engine

Номер: US20120186551A1
Автор: Harald Schueler, Juergen Gross, Karl-Otto Schmidt, Simon Rentschler, Sven Hartmann
Принадлежит: ROBERT BOSCH GMBH

A device for starting an internal combustion engine has a meshing module which is provided for meshing a drive pinion, a starter motor, a switching module via which a starter current is suppliable to the starter motor, and a control unit which is provided for energizing the meshing module and the switching module.

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Номер записи: 26
23-08-2012 дата публикации

Hot swappable synchronous buck regulator

Номер: US20120212077A1
Автор: Chun-An Lai
Принадлежит: Hon Hai Precision Industry Co Ltd

A synchronous buck regulator includes a voltage regulator, a sample unit, a switch element, a comparison unit, a time delay unit, and a control unit. The sample unit is connected to the external power source for sampling a voltage drop in the external power source. The comparison unit is connected to the sample unit for outputting a result-high signal when the current passing through the sample unit is greater than a predetermined current rating. The time delay unit is connected to the comparison unit for outputting a first result-low signal. The control unit is connected to the time delay unit and outputs a first a low level signal to the switch element according to the result-low signal. The switch element connects the sample unit and the voltage regulator and can isolate the voltage regulator from the external power source when the low level signal is received.

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Номер записи: 27
23-08-2012 дата публикации

Voltage spikes control for power converters

Номер: US20120212861A1
Автор: Fabio Alessio Marino, Paolo Menegoli
Принадлежит: Fabio Alessio Marino, Paolo Menegoli

A novel inductive overvoltage suppression circuit for power converters is presented. High amplitude voltage spikes are generally occurring in high frequency power converters in presence of small parasitic inductances coupled to the power distribution rails, in correspondence of the switching transitions, particularly when high load currents are required. The presented invention proposes active clamps to limit the amplitude of the overvoltage. Furthermore the excess energy in the parasitic inductances is utilized to provide energy and/or a signal to determine when to turn on the next phase power device with the fastest transition possible without incurring in cross-conduction currents in the power stage of the converter, thus improving its overall performance, and circuit reliability in addition to achieving high conversion efficiency.

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Номер записи: 28
06-09-2012 дата публикации

Led driving circuit and short-circuit protection circuit

Номер: US20120223644A1
Автор: Chen-Hsung Wang, Chia-Ming Chan
Принадлежит: Green Solution Technology Co Ltd

An LED driving circuit, adapted to drive an LED module, is disclosed. The LED driving circuit comprises a converting circuit, a converting controller, and a short-circuit protection circuit. The converting circuit, having a capacitor coupled to the LED module, is coupled to an input power source to proceed converting operation to supply an output current for driving the LED module. The converting controller controls the converting circuit to provide a stable current flowing through the LED module. The short-circuit protection circuit is coupled to the LED module in series and cuts the current flowing through the LED module off when detecting that the current higher than a current protection value.

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Номер записи: 29
13-09-2012 дата публикации

Power supply selector and method for minimizing an inrush current in a power supply selector

Номер: US20120228962A1
Автор: Anmol Sharma, Pavan Kumar Bandarupalli
Принадлежит: Texas Instruments Inc

A method for minimizing an inrush current in a power supply selector and a power supply selector system is provided. The power supply selector includes a plurality of power input nodes, a power output node, a first transistor and a second transistor. Each of the power input nodes may be coupled to a first switch having a first on-resistance and to a second switch having a second on-resistance. The second on-resistance is greater than the first on-resistance. The first switch and the second switch are preferably coupled in parallel. The power supply selector may be configured to couple a selected one of the power input nodes to the source of the first transistor and to the gate of the second transistor so as to sense a sense voltage at the selected power input node.

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Номер записи: 30
20-09-2012 дата публикации

Semiconductor integrated circuit

Номер: US20120236448A1
Автор: Takayuki Hiraoka
Принадлежит: Toshiba Corp

According to one embodiment, a first electrostatic protection circuit is connected between a first power supply wire and a second power supply wire, a second electrostatic protection circuit is connected between the first power supply wire and a third power supply wire, a first transistor is connected between the second power supply wire and the third power supply wire, a gate control circuit controls a gate potential of the first transistor based on a detection result of a second voltage, a second transistor is connected between the third power supply wire and a gate of the first transistor, and an abnormal voltage detection circuit controls on and off of the second transistor based on a detection result of a third voltage.

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Номер записи: 31
20-09-2012 дата публикации

Electrostatic discharge protection circuit for compound semiconductor devices and circuits

Номер: US20120236449A1
Автор: Andrew T. Ping, Dominic J. Ogbonnah
Принадлежит: Triquint Semiconductor Inc

An apparatus and method is disclosed for providing an electrostatic discharge protection circuit for compound semiconductor devices and circuits. The electrostatic discharge protection circuit comprises a first terminal and a second terminal. The electrostatic discharge protection circuit further comprises a transistor shunt element that is operably coupled between the first terminal and the second terminal; the transistor shunt element is capable of providing a bi-directional discharge path between the first terminal and the second terminal. The electrostatic discharge protection circuit further comprises a shut-off element that is operably coupled with the second terminal; the shut-off element is capable of keeping the transistor shunt element turned-off.

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Номер записи: 32
01-11-2012 дата публикации

Esd protection device

Номер: US20120275074A1
Автор: Jonas R. Weiss, Peter Dill, Thomas E. Morf
Принадлежит: International Business Machines Corp

An electrostatic discharge (ESD) protection device for protecting an I/O port of an electronic circuit from overvoltage and a coil structure for use in an ESD protection device. The ESD protection device includes: a plurality of inductors that are serially coupled in a line, where a node is formed between two neighboring inductors; and a plurality of protection arrangements adapted to conduct charges to one provided potential when an overvoltage is applied, where each of the protection arrangements is connected with one of the nodes, and where the serially coupled inductors are magnetically coupled with each other.

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Номер записи: 33
29-11-2012 дата публикации

Static surge protection device

Номер: US20120300352A1
Автор: Jean-François De Palma, Jerry L. Mosesian
Принадлежит: Mersen USA Newburyport MA LLC

A surge protection device that includes varistors to absorb surge currents and protect a load from an overvoltage condition. The surge protection device includes a combination of switching elements and diodes. The surge protection device includes a basic cell design that can be easily adapted for higher voltage applications and/or higher discharge current applications and/or higher energy applications by parallel and/or series combinations of the basic cell design. Operation of the device minimizes fatigue to the varistors, thereby extending their useful life. The surge protection device achieves a better ratio of MOV clamping voltage rating versus MOV maximum continuous AC voltage rating, as compared with a conventional MOV installed alone.

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Номер записи: 34
20-12-2012 дата публикации

Surge arrester and gas-insulated electric apparatus

Номер: US20120320488A1
Автор: Kazuhide Bannai
Принадлежит: Toshiba Corp

A surge arrester according to an embodiment of the present invention includes a switching unit connected to a gas-insulated electric equipment in which insulating gas is sealed, and switching a limited voltage of the surge arrester into a limited voltage smaller than a low-temperature critical voltage indicating a withstand voltage generating a dielectric breakdown when the insulating gas is liquefied.

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Номер записи: 35
27-12-2012 дата публикации

Intrinsically safe portable radio architecture

Номер: US20120329409A1
Автор: Brian Martens, David Grunert, David Hinterberger, Jonathan Black, Paresh Chauhan
Принадлежит: HARRIS CORP

An intrinsically safe portable radio device ( 100 ) having a portable radio device housing ( 120 ). A first radio section ( 201 ) is an intrinsically safe circuit is (ISC) disposed within the housing and arranged to perform at least one function to facilitate operation of the portable radio device. A second radio section ( 202 ) ISC is disposed within the housing and arranged to perform at least a second function to facilitate operation of the portable radio device. Each of the first and second ISCs independently satisfy a defined standard for intrinsically safe devices.

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Номер записи: 36
03-01-2013 дата публикации

Driver circuit, method of manufacturing the driver circuit, and display device including the driver circuit

Номер: US20130002312A1
Автор: Jun Koyama, Shunpei Yamazaki
Принадлежит: Semiconductor Energy Laboratory Co Ltd

Provided are a driver circuit which suppresses damage of a semiconductor element due to ESD in a manufacturing process, a method of manufacturing the driver circuit. Further provided are a driver circuit provided with a protection circuit with low leakage current, and a method of manufacturing the driver circuit. By providing a protection circuit in a driver circuit to be electrically connected to a semiconductor element in the driver circuit, and by forming, at the same time, a transistor which serves as the semiconductor element in the driver circuit and a transistor included in the protection circuit in the driver circuit, damage of the semiconductor element due to ESD is suppressed in the process of manufacturing the driver circuit. Further, by using an oxide semiconductor film for the transistor included in the protection circuit in the driver circuit, leakage current in the protection circuit is reduced.

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Номер записи: 37
03-01-2013 дата публикации

Systems and methods for grounding power line sections to clear faults

Номер: US20130003234A1
Автор: Lowell L. Wood, JR., Muriel Y. Ishikawa, Roderick A. Hyde, Victoria Y.H. Wood
Принадлежит: SEARETE LLC

Systems and methods for dynamically clearing faults in a power transmission line involve automatically terminating ends of a section of the power line while preserving electrical and/or physical continuity of the power line. The terminating of the ends is reversed at about voltage zero-crossings in the power line to clear a fault.

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Номер записи: 38
10-01-2013 дата публикации

Switching module for use in a device to limit and/or break the current of a power transmission or distribution line

Номер: US20130009491A1
Автор: Bo Biljenga, Erika Siljeström, Jürgen Häfner, Peter Lundberg, Roland Siljestrom, Ulrich Schlapbach
Принадлежит: ABB TECHNOLOGY AG

A switching module, intended to be used in a medium or high voltage DC breaker or a DC current limiter, includes at least one power semiconductor switching element, a gate unit arranged to turn the at least one power semiconductor switching element on and off, respectively, according to a switching control signal, and an energy storage capacitor arranged to provide power to a power supply input of the gate unit. The switching module further includes a power transformation device arranged to receive an optical power signal, to transform the optical power signal into an electrical power signal and to provide the electrical power signal to the energy storage capacitor.

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Номер записи: 39
17-01-2013 дата публикации

RC Triggered ESD Protection Device

Номер: US20130016445A1
Автор: Kuo-Ji Chen, Tzu-Yi Yang, Yen-Lin Liu
Принадлежит: Taiwan Semiconductor Manufacturing Co TSMC Ltd

An RC triggered ESD protection device comprises a discharge transistor, a driver circuit and a trigger circuit. The trigger circuit comprises a plurality of native NMOS transistors connected in parallel with a plurality of PMOS transistors operating as resistors. The relatively small resistance of the plurality of native NMOS transistors helps to keep a stable RC time constant value so that the ESD protection device can avoid a leakage current during a power up operation.

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Номер записи: 40
31-01-2013 дата публикации

Power supply and data signal interface circuit with overvoltage protection

Номер: US20130031398A1
Автор: Amit K. SRIVASTAVA, Parul K. Sharma
Принадлежит: FREESCALE SEMICONDUCTOR INC

A data processing device with a power supply and data signal interface circuit has a switch for connecting an external line and an internal node. The power supply and data signal interface circuit also includes a controller for applying an enabling voltage to the switch enabling the switch to supply current between the external line and the internal node in the presence of power supply to the controller and in the absence of the overvoltage condition on the external line. The power supply and data signal interface circuit also includes a voltage reduction connection from the external line for applying a control voltage to the switch in the absence of power supply to the controller. The control voltage from the voltage reduction connection limits a voltage applied to the internal node through the switch in the presence of the overvoltage condition.

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Номер записи: 41
07-02-2013 дата публикации

Lightning proof device for filter

Номер: US20130033795A1
Автор: Chun-Yi Li
Принадлежит: Soontai Tech Co Ltd

A lightning proof device for filter has a lightning proof device provided between a signal source input end and a filtering system of the filter. The lightning proof device has a first and a second metal inducing sheets opposite to each other, a filtering capacitor being provided corresponding to the first metal inducing sheet. The first metal inducing sheet is connected with the signal source input end of the filter and a first electrode end of the filtering capacitor, and a second electrode end of the filtering capacitor with the filtering system of the filter. The second metal inducing sheet is connected to the ground end. A gap is formed between the first and the second metal inducing sheets. In this manner, surge signal is absorbed and released by the gap in preliminary stage and the residual surge energy is filtered and de-energized by the filtering capacitor in final stage.

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Номер записи: 42
14-02-2013 дата публикации

High voltage dc breaker apparatus

Номер: US20130038975A1
Автор: Gunnar Asplund, Jürgen Häfner
Принадлежит: ABB TECHNOLOGY AG

A high voltage DC breaker apparatus configured to break a fault current occurring in a high voltage DC conductor includes a current limiting arrangement having at least one section with at least one semiconductor device of turn-off type and at least one arrester connected in parallel therewith, and a mechanical DC breaker connected in series with the current limiting arrangement and including a mechanical switch. The mechanical DC breaker is configured to enable breaking of a fault current in said DC conductor once said semiconductor devices of said arrangement have been turned off.

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Номер записи: 43
28-02-2013 дата публикации

Combination esd protection circuits and methods

Номер: US20130050887A1
Автор: Michael D. Chaine, Xiaofeng Fan
Принадлежит: Micron Technology Inc

Circuits, integrated circuits, apparatuses, and methods, such as those for protecting circuits against electrostatic discharge events are disclosed. In an example method, a thyristor is triggered to conduct current from a signal node to a reference voltage node using leakage currents provided by a transistor formed in a semiconductor doped well shared with the base of the thyristor. The leakage currents are responsive to a noise event (e.g., electrostatic discharge (ESD) event) at the signal node, and increase the voltage of the semiconductor doped well to forward bias the base and the collector of the thyristor. The triggered thyristor conducts the current resulting from the ESD event to the reference voltage node.

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Номер записи: 44
21-03-2013 дата публикации

Electrostatic discharge protection circuit and electrostatic discharge protection method

Номер: US20130070376A1
Автор: HONGWEI Li, Huijuan CHENG, Jie Chen, Kai Zhu, Zhiguang Guo
Принадлежит: Semiconductor Manufacturing International Beijing Corp

An ESD protection circuit and method for its use are provided. The circuit comprising: a discharge path formed by first and second NMOS transistors which are sequentially connected between a ground and a power supply; an ESD event detection unit; first and second drive units respectively connected between an output of the ESD event detection unit and a gate of the first transistor and between the output of the ESD event detection unit and a gate of the second transistor. The first and second drive units respectively cause the first and second transistors to be turned on during an ESD event and to be turned off when there is no ESD event.

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Номер записи: 45
28-03-2013 дата публикации

Voltage Surge and Overvoltage Protection Using Prestored Voltage-Time Profiles

Номер: US20130077198A1
Автор: Divan Deepakraj M.
Принадлежит: GEORGIA TECH RESEARCH CORPORATION

Disclosed are various embodiments of voltage protectors that include a first voltage clamping device configured to clamp a voltage of an input power applied to an electrical load, and a second voltage clamping device configured to clamp the voltage applied to the electrical load. A series inductance separates the first and second voltage clamping devices. Also, a switching element is employed to selectively establish a direct coupling of the input power to the electrical load, where a circuit is employed to control the operation of the switching element. 135-. (canceled)36. A system , comprising:at least one first voltage clamping device configured to clamp a voltage of an input power voltage applied to an electrical load;at least one second voltage clamping device configured to clamp the voltage applied to the electrical load;an inductance arranged between the first and second voltage clamping devices;a switching element employed to selectively establish a coupling of the input power voltage to the electrical load; anda processor circuit that controls the operation of the switching element, the processor circuit operative to:store a plurality of predefined voltage-time thresholds in a memory;monitor the input power voltage to identify an overvoltage experienced in the power voltage among the first clamping device and the second clamping device; andtime a duration of the overvoltage by controlling the switching element to selectively establish a coupling of the input power voltage to the electrical load such that, when the input power voltage experiences an overvoltage that extends beyond one or more of the voltage-time thresholds, the processor circuit manipulates the switching element to at least partially isolate the electrical load and the second voltage clamping device from the power voltage until the overvoltage has abated.37. The system of claim 36 , wherein the at least one first voltage clamping device comprises a metal-oxide varistor.38. The system of ...

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Номер записи: 46
04-04-2013 дата публикации

Method And Apparatus For Moving Material

Номер: US20130083435A1
Автор: John Samila
Принадлежит: Ephaugh Inc

An apparatus and method for providing ground fault protection to a lifting device utilizing an electromagnet and powered by a generator. The apparatus and method rectifies an AC voltage emanating from the generator source and monitors unsafe operating conditions of the generator's circuit wherein operation of the lifting device is ceased when predetermined electrical operating parameters are exceeded.

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Номер записи: 47
04-04-2013 дата публикации

ESD Protection for FinFETs

Номер: US20130083438A1
Автор: Lee Jam-Wem, Lo Ching-Hsiung
Принадлежит: Taiwan Semiconductor Manufacturing Company, Ltd.

An embodiment is a semiconductor device comprising a receiver circuit comprising fin field effect transistors (FinFETs), a transceiver circuit comprising FinFETs, and a transmit bus electrically coupling the receiver circuit and the transceiver circuit, wherein the receiver circuit and the transceiver circuit each further comprises an electrostatic discharge protection circuit comprising planar transistors electrically coupled to the transmit bus. Other embodiments may further comprise a power clamp electrically coupling a first power bus and a first ground bus, a power clamp electrically coupling a second power bus and a second ground bus, or at least two diodes electrically cross-coupling the first ground bus and the second ground bus. Also, the planar transistors of the transceiver circuit and the receiver circuit may each comprise a planar PMOS transistor and a planar NMOS transistor. 1. A method comprising:receiving a charge in a first circuit, the first circuit comprising first operational circuitry and first protection circuitry, the first operational circuitry comprising a first fin field effect transistor (FinFET), the first protection circuitry comprising a first planar transistor;passing a first current through the first planar transistor, the first current resulting from the charge that was received in the first circuit;passing the first current through a transmit bus, the transmit bus being electrically coupled to a second circuit, the second circuit comprising second operational circuitry and second protection circuitry, the second protection circuitry comprising a second planar transistor;passing the first current through the second planar transistor; anddischarging the first current through a contact electrically coupled to the second circuitry.2. The method of claim 1 , wherein the first circuit comprises a transceiver circuit.3. The method of claim 1 , wherein the first circuit comprises a receiver circuit.4. The method of claim 1 , wherein the ...

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Номер записи: 48
04-04-2013 дата публикации

HIGH-FREQUENCY MODULE

Номер: US20130083439A1
Автор: HAYAKAWA Masashi
Принадлежит: MURATA MANUFACTURING CO., LTD.

A high-frequency module includes an inductor and an ESD protection element. The inductor is a circuit element defining a low pass filter, and includes parasitic capacitance between a signal line and a ground in a specific frequency band. The ESD protection element transfers a surge current flowing through a signal line to the ground, includes a capacitor in a specific frequency band, and has a configuration in which the capacitor and the parasitic capacitance of the inductor are connected in parallel. 1. A high-frequency module comprising:a signal selection circuit arranged to select a specific communication signal from a plurality of communication signals propagating through an antenna; andan ESD protection element; whereinthe signal selection circuit is located between a signal line through which the specific communication signal flows and a ground, and includes a circuit element including a capacitance component in a frequency band of the specific communication signal; andthe ESD protection element includes a capacitance component in the frequency band of the specific communication signal; whereinthe capacitance component of the ESD protection element and the capacitance component of the circuit element are connected in parallel in an equivalent circuit in the frequency band of the specific communication signal.2. The high-frequency module according to claim 1 , wherein the circuit element is a capacitor connected between the signal line and the ground.3. The high-frequency module according to claim 2 , wherein the signal selection circuit includes a low pass filter claim 2 , and the capacitor and the ESD protection element are connected in parallel to a terminal of the low pass filter that is different from a terminal thereof connected to the antenna.4. The high-frequency module according to claim 1 , wherein the circuit element is a strip line or a microstrip line defined by the signal line and a ground facing the signal line through a dielectric layer.5. The ...

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Номер записи: 49
04-04-2013 дата публикации

OVERVOLTAGE PROTECTION COMPONENT, AND OVERVOLTAGE PROTECTION MATERIAL FOR OVERVOLTAGE PROTECTION COMPONENT

Номер: US20130083440A1
Автор: Iseki Takeshi, Morino Takashi, Nozoe Kenji, Tokunaga Hideaki, Yoshioka Kouichi
Принадлежит: Panasonic Corporation

An overvoltage protector includes a first discharging electrode, a second discharging electrode, and an overvoltage protection part provided between the first and second discharging electrodes. The overvoltage protecting part has an insulating property under a normal operation condition, and has a conductive property if an overvoltage is applied between the first and second discharging electrodes. The overvoltage protecting part is made of a mixture of resin having an insulation property, an inorganic compound having an insulating property, and metallic boride compound powder. The metallic boride compound powder has a high melting point therefore it is hardly melted. Under high temperatures causing the powder to melt, the powder is oxidized and loses conductivity, thus providing a high reliability. 1. An overvoltage protector comprising:a first discharging electrode;a second discharging electrode; andan overvoltage protection part provided between the first discharging electrode and the second discharging electrode,wherein the overvoltage protecting part has an insulating property under a normal operation condition where a voltage not higher than a predetermined voltage is applied between the first discharging electrode and the second discharging electrode, and has a conductive property if an overvoltage higher than the predetermined voltage is applied between the first discharging electrode and the second discharging electrode,wherein the overvoltage protecting part is made of a mixture of resin having an insulation property, an inorganic compound having an insulating property, and metallic boride compound powder,wherein an average particle diameter of the metallic boride compound powder ranges from 0.5 μm to 3 μm.2. The overvoltage protector according to . claim 1 , wherein the metallic boride compound powder contains at least one of TiB claim 1 , ZrB claim 1 , and LaB.3. The overvoltage protector according to claim 2 , wherein both the first discharging electrode ...

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Номер записи: 50
04-04-2013 дата публикации

Aggregation enclosure for elevated, outdoor locations

Номер: US20130084050A1
Автор: Eberhard Kahle, Ian Miles Standish, Juraj Marak, Kristof Vastmans, Pieter Arthur Anna De Vos, Sven Schuemann
Принадлежит: Individual

Certain types of aggregation enclosures include cable input ports and downwardly angled cable output ports. A cover is pivotally coupled to the body so that the cover moves between an open position and a closed position. A modular component panel may be disposed within the enclosure. The component panel includes one or more distribution components (e.g., fiber distribution components or power distribution components) configured to connect at least a portion of an incoming cable to at least a portion of an outgoing cable.

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Номер записи: 51
11-04-2013 дата публикации

Surge Protector Components Having a Plurality of Spark Gap Members Between a Central Conductor and an Outer Housing

Номер: US20130090010A1
Автор: Darrow Robert E., Li Shi Man, Riggsby Robert R., Wood Kenneth Steven
Принадлежит: CommScope, Inc. of North Carolina

A coaxial connector includes a surge protection component including a plurality of elongated members, a body portion that is configured to receive the surge protection component such that the elongated members extend along an outer surface thereof, and a center conductor disposed inside the body portion and spaced apart from the surge protection component so as to create a gap therebetween 1. A coaxial connector , comprising:a surge protection component comprising a plurality of elongated members;a body portion that is configured to receive the surge protection component such that the elongated members extend along an outer surface thereof; anda center conductor disposed inside the body portion and spaced apart from the surge protection component so as to create a gap therebetween.2. The coaxial connector of claim 1 , wherein the body portion comprises longitudinal slots formed thereon that receive the elongated members therein claim 1 , respectively.3. The coaxial connector of claim 1 , wherein each of the plurality of elongated members has a first end portion thereof that is substantially perpendicular to the center conductor and a second end portion thereof that is substantially parallel with an outer surface of the body portion.4. The coaxial connector of claim 1 , wherein at least part of the body portion comprises an electrically insulative material.5. The coaxial connector of claim 1 , wherein the body portion comprises a slot formed therein and the surge protection component comprises a base portion that is configured for receipt in the slot formed in the body portion.6. The coaxial connector of claim 1 , wherein the plurality of elongated members comprises three elongated members spaced approximately 90° apart.78.-. (canceled)9. An electrical power surge protection component claim 1 , comprising:an electrically insulative body; andfirst and second conductive wires encased in the electrically insulative body;wherein the electrically insulative body comprises ...

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Номер записи: 52
18-04-2013 дата публикации

Electrical surge protector and method of providing the same

Номер: US20130094111A1
Автор: Jeffrey W. Garb, Pedro Manrique, Philip Mathew Hodgson
Принадлежит: Belkin International Inc

Some embodiments include an electrical surge protector. Other embodiments of related systems and methods are also disclosed.

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Номер записи: 53
18-04-2013 дата публикации

CONDUCTIVE COMPOSITE MATERIAL WITH POSITIVE TEMPERATURE COEFFICIENT OF RESISTANCE AND OVERCURRENT PROTECTION COMPONENT

Номер: US20130094116A1
Автор: Gao Daohua, Li Congwu, Liu Yutang, Liu Zhengping, Wang Jun, Yang Quan-quan
Принадлежит:

A PTC conductive composite material and the overcurrent protection device made of the material are disclosed. The PTC conductive composite material includes: (a) A matrix of crystalline polymer material at least, occupies 20%-70% of the volume fraction of the PTC conductive composite material, (b) One kind of conductive filler occupies 30%-80% of the volume fraction of the material. The solid solution conductive filler is uniformly dispersed in the polymer material, whose average particle size ranges from 0.1 μm to 10 μm, and the volume resistivity is no more than 300 μΩ·cm. The overcurrent protection device prepared by using the PTC conductive composite material as described above includes two metal foils, which are made into a sandwich, separated by a layer of the PTC conductive composite material. 1. A positive-temperature coefficient (PTC) conductive composite material , comprising:a matrix of crystalline polymer material at least, occupying 20%-70% of the volume fraction of the PTC conductive composite material; anda conductive filler occupying remaining volume fraction of the PTC conductive composite material,wherein the conductive filler is dispersed in the crystalline polymer material, the conductive filler having an average particle size ranging from 0.1 μm to 10 μm, and a volume resistivity no more than 300 μΩ·cm.2. The PTC conductive composite material of claim 1 ,wherein the crystalline polymer material is one of epoxy resin, polyethylene, polypropylene, polyvinylidene fluoride, ethylene-vinyl acetate copolymer, poly (methyl methacrylate) and ethylene-acrylic acid copolymer or a mixture thereof.3. The PTC conductive composite material of claim 1 ,wherein the conductive filler comprises a metal carbide solid solution whose components include a mixture of two or more of tantalum carbide, vanadium carbide, zirconium carbide, titanium carbide, niobium carbide, molybdenum carbide, hafnium carbide, chromium carbide, tungsten carbide, boron carbide and ...

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Номер записи: 54
25-04-2013 дата публикации

ELECTROSTATIC DISCHARGE CLAMP WITH CONTROLLED HYSTERESIS INCLUDING SELECTABLE TURN ON AND TURN OFF THRESHOLD VOLTAGES

Номер: US20130100562A1
Автор: Croft Gregg D.
Принадлежит: INTERSIL AMERICAS LLC

An electrostatic discharge (ESD) clamp for coupling between first and second nodes for providing ESD protection including first and second voltage threshold circuits. The clamp circuit limits operating voltage between the first and second nodes to a maximum level when activated. The first and second voltage threshold circuits each have a selectable threshold voltage, such as by coupling one or more voltage threshold devices in series. The first and second voltage threshold circuits trigger to turn on the clamp circuit when the operating voltage increases above a first voltage threshold. The voltage threshold circuits are turned off to turn off the clamp circuit when the operating voltage decreases to the second threshold voltage. The second threshold voltage may be selected at any level above the nominal operating voltage to prevent the clamp from latching. 1. An electrostatic discharge clamp for coupling between first and second power rails , comprising:first, second, third, and fourth nodes;a first resistive device having a first terminal for coupling to the first power rail and having a second terminal coupled to said first node;a second resistive device having a first terminal coupled to said second node and having a second terminal for coupling to the second power rail;a third resistive device coupled between said third and fourth nodes;a first transistor having a first current terminal coupled to said first terminal of said first resistive device, having a control terminal coupled to said first node, and having a second current terminal coupled to said second node;a second transistor having a control terminal coupled to said second node, having a first current terminal coupled to said third node, and having a second current terminal coupled to said second terminal of said second resistive device;a third transistor having a control terminal coupled to said fourth node, having a first current terminal coupled to said first node, and having a second current ...

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Номер записи: 55
25-04-2013 дата публикации

Fully isolated coaxial surge protector

Номер: US20130100571A1
Автор: Erdogan Alkan, Noah Montena
Принадлежит: PPC Broadband Inc

A protective device for a coaxial cable system including a first interface pin and a second interface pin positioned in axial relationship along a longitudinal axis with the first interface pin such that a dielectric gap is formed between the first and second interface pins, the dielectric gap being configured to couple radio frequency signals across the dielectric gap and block low frequency electrical current across the dielectric gap. A housing positioned in an axially surrounding relation to the first interface pin and an outer conductor interface positioned in axial relationship to the housing such that a coupling gap is formed between outer conductor interface and the housing, the coupling gap configured to couple radio frequency signals across the coupling gap and block low frequency electrical current across the coupling gap.

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Номер записи: 56
02-05-2013 дата публикации

OVERVOLTAGE PROTECTION ELEMENT

Номер: US20130106567A1
Автор: Depping Christian, Grewe Christina, Jungermann Philip, Wosgien Joachim
Принадлежит: PHOENIX CONTACT GMBH & CO. KG

An overvoltage protection element is disclosed that includes a housing, connections for electrically connecting the overvoltage protection element to a current path or a signal path to be protected The overvoltage protection element further includes two varistors arranged inside the housing and electrically connected in parallel, and a center electrode arranged at least partially between the varistors. The housing has two housing halves made of metal and electrically connected to each other, wherein the center electrode is isolated from the housing halves and is electrically connected at the opposite sides of the electrode to a first connection area of a varistor and wherein the two varistors and the center electrode are sandwiched between the two housing halves. One housing half is designed as a cover, which has a covering section and a recessed engagement section. In the installed states of the two housing halves, the engagement section engages in the corresponding receiving space formed by the other housing half and the covering section covers the receiving space, and in that the two housing halves are connected to each other such that in the installed state a visible gap is present between the two housing halves. 122-. (canceled)23. An overvoltage protection element comprising:a housing;terminals electrically connecting the overvoltage protection element to a current path or a signal path to be protected;two varistors connected electrically in parallel and located within the housing; anda middle electrode located between the varistors, wherein:the housing comprises two metal housing halves electrically connected to one another;the middle electrode is electrically insulated from the housing halves;each of opposite sides of the middle electrode is electrically connected to a respective first connecting region of each of the two varistors, the two varistors and the middle electrode are sandwiched between the housing halves;a first one of the housing halves is a ...

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Номер записи: 57
02-05-2013 дата публикации

ESD Protection Circuit

Номер: US20130107403A1
Автор: De Boet Johannes Adrianus Maria
Принадлежит: NXP B.V.

Disclosed is a circuit () comprising a transistor () coupled between a supply voltage line () and ground (), the transistor comprising a control terminal coupled to a input signal line (), the circuit further comprising first and second bipolar transistors () coupled in series between the input signal line () and ground (), wherein the base of the first bipolar transistor is connected to the input signal line and the base of the second bipolar transistor is connected to ground. 1. Circuit comprising:a transistor coupled between a supply voltage line and ground, the transistor comprising a control terminal coupled to an input signal line, andfirst and second bipolar transistors coupled in series between the input signal line and ground, the first bipolar transistor having a base and the second bipolar transistor having a basewherein the base of the first bipolar transistor is connected to the input signal line and the base of the second bipolar transistor is connected to ground.2. The circuit of claim 1 , wherein the base of the first bipolar transistor is connected to the input signal line via a first resistor and the base of the second bipolar transistor is connected to ground via a second resistor.3. The circuit of claim 1 , wherein the first and second bipolar transistors share an N-region.4. The circuit of claim 1 , further comprising:first and second MOS transistors coupled in series between the input signal line and ground, the first MOS transistor having a gate and the second MOS transistor having a gate,wherein the gate of the first MOS transistor is connected to the input signal line and the gate of the second MOS transistor is connected to ground, and wherein a node between the first bipolar transistor and the second bipolar transistor is connected to a node between the first MOS transistor and the second MOS transistor.5. The circuit of claim 4 , wherein said MOS transistors are LDMOS transistors.6. The circuit of claim 1 , wherein the transistor is an ...

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Номер записи: 58
02-05-2013 дата публикации

BATTERY PROTECTOR

Номер: US20130107404A1
Автор: HAMAI Atsushi
Принадлежит: SUZUKI MOTOR CORPORATION

A battery is protected without realizing the state of every vehicle element connected to the battery or the battery input/output current. A current limit value setting unit sets a current limit value for limiting the battery input/output current in accordance with state of the battery. A limiting current ratio calculation unit calculates a ratio of the current limit value set by the current limit value setting unit to a detected battery current value. A request limit coefficient calculation unit calculates a limit coefficient for limiting a request value for driving respective vehicle components based on the ratio calculated by the limiting current ratio calculation unit. In addition, a final request value calculation unit calculates as a final request value for the respective vehicle components, respective multiplication values resulting from multiplying the respective request values for the respective components by the limit coefficient calculated by the request limit coefficient calculation unit. 1. A battery protector for protecting a battery of a vehicle including an engine , a power generator motor driven by the engine and controlled based on a request value , a drive motor to be controlled based on a request value and to drive driving wheels , a battery for storing generated electric power from the power generator motor and regenerative power from the drive motor and for supplying electric power for powering to the drive motor , the battery protector comprising:a battery input/output current index value acquiring unit for acquiring an index value for input/output current to/from the battery;a limit value setting unit for setting a limit value for limiting the input/output current to/from the battery in accordance with a state of the battery;a ratio calculation unit for calculating a ratio of the limit value set by the limit value setting unit to the index value acquired by the battery input/output current index value acquiring unit;a limit coefficient ...

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Номер записи: 59
09-05-2013 дата публикации

SURGE PROTECTION

Номер: US20130114168A1
Автор: Andersson Arne
Принадлежит: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

A victim unit (310, 410) connectable to a surge protective device (300, 400) via an alternating current system or a direct current system, the victim unit (310) comprises at least one victim unit sensor (313314315) adapted to measure at least one status parameter at the victim unit (310, 410) and a controller (312) operatively connected to the at least one victim unit sensor (313314315). The controller (312) is capable of initiating a voltage limitation of the victim unit (310) by controlling the surge protective device (300, 400) if one or more of the at least one status parameters indicates that the victim unit (310) has reached a critical state. 1. A victim unit connectable to a surge protective device via an alternating current system or a direct current system , the victim unit comprising:at least one victim unit sensor adapted to measure at least one status parameter at said victim unit and a controller operatively connected to said at least one victim unit sensor, wherein said controller is capable of initiating a voltage limitation of said victim unit by controlling said surge protective device if one or more of said at least one status parameters indicates that said victim unit has reached a critical state.2. A victim unit according to claim 1 , wherein said controller is adapted to determine that said victim unit has reached a critical state if one or more of said at least one measured status parameter is above a respective first threshold value.3. A victim unit according to claim 2 , wherein said controller is further adapted to control said surge protective device via an external trig signal provided to said surge protective device if said at least one status parameter is above said respective first threshold value.4. A victim unit according to claim 3 , wherein the victim unit is further connectable to at least one additional surge protective device claim 3 , wherein said controller is further adapted to control each connected surge protective device by ...

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Номер записи: 60
09-05-2013 дата публикации

Electrostatic discharge protection for electrical components, devices including such protection and methods for making the same

Номер: US20130114174A1
Автор: Adam Scotch, David Hamby
Принадлежит: Osram Sylvania Inc

Systems and methods for protecting electrical components such as light emitting diodes are described. In some embodiments, electrical components are protected from high level electrostatic discharge (“ESD”) events by a circuit board that provides an intrinsic level of ESD protection. At the same time, such electrical components are protected against low level ESD events by one or more diodes that are electrically coupled thereto. The one or more diodes may be thin film diodes comprising at least one layer of p-type semiconductive material and at least one layer of n-type semiconductive material. Devices including ESD protection and methods for manufacturing such devices are also described.

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Номер записи: 61
16-05-2013 дата публикации

GROUND FAULT INTERRUPT CIRCUIT FOR ELECTRIC VEHICLE

Номер: US20130119933A1
Автор: Berman Scott, Flack Albert
Принадлежит:

In one implementation, a ground fault interrupt circuit is provided for a utility power connection to an electric vehicle charging unit. The ground fault interrupt circuit may include a gain amplifier having an input connected to be capable of receiving a differential current from a current sensing transformer and a comparator having an input connect to a reference voltage. It includes a rectifier circuit connected between the gain amplifier and the comparator with a charge accumulator circuit coupled between the rectifier and the comparator. 1. A ground fault interrupt circuit for a utility power connection to an electric vehicle charging unit , the ground fault interrupt circuit comprising:a) a gain amplifier having an input connected to be capable of receiving a differential current from a current sensing transformer;b) a filter having an input connected to an output of the gain amplifier;c) a comparator having an input connected to an output of the half wave rectified dual stage filter;d) a fault latch having an input connected to the output of the comparator;e) a contactor control circuit having an input connected to an output of the fault latch; andf) a utility power line contactor having a contactor control input connected to an output of the contactor control circuit.2. The circuit of claim 1 , wherein the filter is a half wave rectified dual stage filter.3. The circuit of claim 1 , wherein the gain amplifier comprises a surge protection circuit claim 1 , and further comprising a redundant surge protection circuit connected to an input of the gain amplifier.4. The circuit of claim 3 , wherein the redundant surge protection circuit comprises a pair of diodes connected to lower and upper reference busses.5. The circuit of claim 1 , further comprising a microprocessor connected to the output of the fault latch so as to detect a fault trip claim 1 , and to a fault latch reset input of the fault latch.6. The circuit of claim 1 , wherein the contactor control ...

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Номер записи: 62
16-05-2013 дата публикации

DRIVING CIRCUITS WITH POWER MOS BREAKDOWN PROTECTION AND DRIVING METHODS THEREOF

Номер: US20130120886A1
Автор: CHEN CHUN-CHI
Принадлежит: MEDIATEK INC.

A driving circuit is provided. The driving circuit is capable of driving a load coupled to an output node of the driving circuit. The driving circuit includes an output-stage element, a first N-type metal-oxide-semiconductor (NMOS) transistor, and a first P-type metal-oxide-semiconductor (PMOS) transistor. The output-stage element is coupled between an operation voltage source and the output node. The first NMOS transistor has a gate, a drain coupled to the output node, and a source coupled to a ground. The first PMOS transistor has a gate, a drain coupled to the ground, and a source coupled to the output node. When the first NMOS transistor begins to be turned off, the first PMOS transistor is turned on, and a voltage at the drain of the first NMOS transistor is clamped to be lower than a breakdown trigger voltage of the first NMOS transistor. 1. A driving circuit for driving a load coupled to an output node of the driving circuit , comprising:an output-stage element coupled between an operation voltage source and the output node;a first N-type metal-oxide-semiconductor (NMOS) transistor having a gate, a drain coupled to the output node, and a source coupled to a ground; anda first P-type metal-oxide-semiconductor (PMOS) transistor having a gate, a drain coupled to the ground, and a source coupled to the output node.2. The driving circuit as claimed in claim 1 , wherein when the first NMOS transistor begins to be turned off claim 1 , the first PMOS transistor is turned on claim 1 , and a voltage at the drain of the first NMOS transistor is clamped to be lower than a breakdown trigger voltage of the first NMOS transistor.3. The driving circuit as claimed in claim 1 ,wherein the first NMOS transistor is controlled according to a first driving signal, and the gate of first PMOS transistor receives a control signal,wherein at a first time point, the first driving signal switches from a first high voltage level to a first low voltage level for turning off the first NMOS ...

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Номер записи: 63
23-05-2013 дата публикации

Serial surge suppression and overload protection optimization device

Номер: US20130128398A1
Автор: Chih-Hua Wang
Принадлежит: Anmax Lightning Tech Corp

A serial surge suppression and overload protection optimization device has an input terminal, an output terminal and multiple surge suppression units. The surge suppression units are serially connected between the input terminal and the output terminal. Each surge suppression unit has two parallel inductors and multiple surge absorbing elements. Each surge absorbing element is connected to an output end of one of the parallel inductors and has a fuse serially connected therewith. When surge energy is excessively large, the fuse melts to separate the surge absorbing element from a main power loop without causing a short circuit within the main power loop due to the meltdown of the fuse. The optimization device is used with an automatic overload protection unit to normally supply power to equipment connected to the output terminal thereof and ensure electrical safety protection with a bypass circuit design thereof.

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Номер записи: 64
23-05-2013 дата публикации

Electrostatic discharge protection apparatus and method therefor

Номер: US20130128400A1
Автор: Chih-Ting Yeh
Принадлежит: Industrial Technology Research Institute ITRI

An electrostatic discharge (ESD) protection apparatus includes a clamp circuit, a detection circuit and a control circuit. The clamp circuit has a first terminal and a second terminal respectively coupled to a first rail line and a second rail line. In response to an ESD event, the clamp circuit generates a first coupling potential at its coupling terminal. The detection circuit, coupled to the coupling terminal of the clamp circuit and the second rail line, outputs a detection signal in response to the first coupling potential. The control circuit, coupled to the first and second rail lines, the detection circuit and the clamp circuit, outputs a conduction signal to a control terminal of the clamp circuit in response to the detection signal. The clamp circuit is conducted in response to the conduction signal so that ESD between the first and second rail lines is performed through the clamp circuit.

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Номер записи: 65
23-05-2013 дата публикации

Power supply system, image forming apparatus having the same, and low-capacity ac processing circuit

Номер: US20130129373A1
Автор: Katsumi Inukai
Принадлежит: Brother Industries Ltd

A power supply system includes: a switching power supply to be connected to an AC power supply, the switching power supply rectifying and smoothing an AC voltage to generate predetermined DC voltage; a first capacitor including a first electrode connected to one end of the AC power supply, and a second electrode; a second capacitor including a first electrode connected to the other end of the AC power supply, and a second electrode; a surge-voltage suppressing circuit connected between the second electrode of the first capacitor and the second electrode of the second capacitor; a rectifier circuit connected to a first contact node between the first capacitor and the surge-voltage suppressing circuit and a second contact node between the second capacitor and the surge-voltage suppressing circuit; and an output-signal generating circuit connected to the rectifier circuit, and uses the rectified current to generate a predetermined output signal.

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Номер записи: 66
23-05-2013 дата публикации

OVERVOLTAGE PROTECTION FOR DEFIBRILLATOR

Номер: US20130131526A1
Автор: "LBahy Aziz", Hunt David K., Wahler Bruce Andrew
Принадлежит: KONINKLIJKE PHILIPS ELECTRONICS N.V.

A defibrillation circuit comprising a gas discharge tube and a light source arranged to pre-energize the gas discharge tube in order to provide predictable breakdown conditions of the gas discharge tube. The gas discharge tube may be used as an overvoltage protection device for the defibrillation circuit or for certain parts of the defibrillation circuit. An overvoltage protection device for medical devices is also described. The overvoltage protection device comprises a gas discharge tube and a light source arranged to pre-energize the gas discharge tube in order to provide predictable breakdown conditions of the gas discharge tube. 1. A defibrillation circuit comprising a gas discharge tube and a light source arranged to pre-energize the gas discharge tube in order to provide predictable breakdown conditions of the gas discharge tube.2. The defibrillation circuit according to claim 1 , wherein the light source is situated in proximity to the gas discharge tube.3. The defibrillation circuit according to claim 1 , wherein the light source is substantially permanently lit during an operation of the defibrillation circuit.4. The defibrillation circuit according to claim 1 , wherein the gas discharge tube is arranged to function as an overvoltage protection device.5. The defibrillation circuit according to claim 1 , wherein the light source is a light emitting diode.6. The defibrillation circuit according to claim 1 , further comprising an electrocardiogram monitoring circuit and wherein the gas discharge tube is connected to the electrocardiogram monitoring circuit to function as an overvoltage protection device for the electrocardiogram monitoring circuit.7. The defibrillation circuit according to claim 6 , wherein the electrocardiogram monitoring circuit comprises a plurality of monitoring leads claim 6 , wherein the defibrillation circuit comprises an electrical conductor carrying an electrical reference potential sufficient to absorb excess electrical charge claim ...

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Номер записи: 67
30-05-2013 дата публикации

SYSTEM AND METHOD PROVIDING OVER CURRENT PROTECTION BASED ON DUTY CYCLE INFORMATION FOR POWER CONVERTER

Номер: US20130135775A1
Автор: Fang Lieyi, Lin Yuan, Sun Zhiqiang, Yao Chao, Zhang Yunchao
Принадлежит: ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD.

System and method for protecting a power converter. An example system controller for protecting a power converter includes a signal generator, a comparator, and a modulation and drive component. The signal generator is configured to generate a threshold signal. The comparator is configured to receive the threshold signal and a current sensing signal and generate a comparison signal based on at least information associated with the threshold signal and the current sensing signal, the current sensing signal indicating a magnitude of a primary current flowing through a primary winding of a power converter. The modulation and drive component is coupled to the signal generator. 1. A system controller for protecting a power converter , the system controller comprising:a signal generator configured to generate a threshold signal;a comparator configured to receive the threshold signal and a current sensing signal and generate a comparison signal based on at least information associated with the threshold signal and the current sensing signal, the current sensing signal indicating a magnitude of a primary current flowing through a primary winding of a power converter; anda modulation and drive component coupled to the signal generator and configured to receive at least the comparison signal, generate a drive signal based on at least information associated with the comparison signal, and output the drive signal to a switch in order to affect the primary current, the drive signal being associated with one or more first switching periods and a second switching period following the one or more first switching periods, the one or more first switching periods corresponding to one or more first duty cycles; determine a first threshold signal value based on at least information associated with the one or more first duty cycles; and', 'generate the threshold signal equal to the determined first threshold signal value, the threshold signal being constant in magnitude as a function of ...

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Номер записи: 68
30-05-2013 дата публикации

CURRENT TRANSFORMER ARRANGEMENT

Номер: US20130135776A1
Автор: Gorablenkow Jörg, Groiss Andreas, Hilker Thomas, Stenzel Peter
Принадлежит: SIEKENS AKTIENGESELLSCHAFT

A current transformer configuration includes a primary part and a secondary part. The primary part is surrounded by a housing. The housing has a first conductive housing part and a second conductive housing part. An electrically insulating gap lies between the two conductive housing parts. The housing passes through the secondary part. The electrically insulating gap is bridged by a surge protection configuration. 19-. (canceled)10. A current transformer configuration , comprising:a primary part;a secondary parta housing surrounding said primary part and passing through said secondary part, said housing having first and second electrically conductive housing parts;at least one electrically insulating gap disposed between said first and second electrically conductive housing parts; anda surge protection configuration bridging said gap.11. The current transformer configuration according to claim 10 , wherein said surge protection configuration has a frequency-dependent impedance element.12. The current transformer configuration according to claim 11 , wherein said impedance element has a capacitor.13. The current transformer configuration according to claim 12 , wherein said capacitor is in the form of a plate capacitor.14. The current transformer configuration according to claim 13 , wherein said plate capacitor is one of a plurality of plate capacitors disposed in parallel in a profile of said gap so as to bridge said gap.15. The current transformer configuration according to claim 10 , wherein said surge protection configuration has a voltage-dependent impedance element.16. The current transformer configuration according to claim 11 , wherein said impedance element has a coordinating spark gap.17. The current transformer configuration according to claim 15 , wherein said impedance element has a coordinating spark gap.18. The current transformer configuration according to claim 15 , wherein said impedance element has a varistor.19. The current transformer ...

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Номер записи: 69
06-06-2013 дата публикации

Circuit, method and system for overload protection

Номер: US20130140890A1
Автор: NISONEN Ilpo
Принадлежит: EFORE OYJ

An overload protection circuit for supplying electric power has advantageous applications especially in supplying power to capacitive loads. In prior art circuits, the charging current is lead to the capacitive load through a linearly operating transistor or through a power resistor. Therefore, prior art circuits often involve a risk of exceeding safe operating area of a power transistor, or circuits with a large number of components are needed. The present overload protection circuit has an inductor (L) coupled in series with a switching element (Q). Load current is measured (), and the switching element (Q) is controlled () to supply current to the load via the inductor (L) until a determined current limit is achieved. After achieving the current limit the switching element (Q) is controlled to off-state, during which the freewheeling current of the inductor (L) is lead through a voltage dependent element (Z). 2. The overload protection circuit according to claim 1 , characterized in that the control means are adapted to switch ON the switching element after a delay has passed after switching OFF the switching element due to the exceeding of the trigger threshold value.3. The overload protection circuit according to claim 1 , characterized in that the voltage dependent element (Z) is a metal oxide varistor.4. The overload protection circuit according to claim 1 , characterized in that the switching element (Q) comprises at least one power semiconductor.535. The overload protection circuit according to claim 1 , characterized in that the control means () comprises a programmable microcontroller.6. The overload protection circuit according to claim 1 , characterized in that the control means include stored data comprising current level values and corresponding values of trip threshold time lengths claim 1 , and the control means are adapted to monitor the time each current level is exceeded within a predetermined time window and to monitor possible exceeding of the ...

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Номер записи: 70
06-06-2013 дата публикации

ADAPTIVE LINE FILTER

Номер: US20130141182A1
Автор: BEYERLEIN Walter, GBAßL Tobias, GEBHARDT Andre, WEIDINGER Thomas
Принадлежит:

A device for improving the filter effect of a filter connected up between an electrical energy source and a source of interference is provided. The filter is configured to feed back interference transients from ground to an input of the source of interference generating the interference transients. The device includes a measuring device for determining a leakage current flowing through the filter and a final control element configured to modify a limit frequency of the filter such that the leakage current through the filter is damped to below a predefined level if the measuring device detects the leakage current. 1. A device for improving the filter effect of a filter connected up between an electrical energy source and a source of interference , the filter configured to feed back interference transients from ground to an input of the source of interference generating the interference transients , the device comprising:a measuring device operable to determine a leakage current flowing through the filter; anda final control element configured to modify a limit frequency of the filter such that the leakage current through the filter is damped to below a predefined level when the measuring device detects the leakage current.2. The device as claimed in claim 1 , wherein the final control element comprises a switch configured to interrupt the leakage current through the filter when the measuring device detects the leakage current.3. The device as claimed in claim 1 , wherein the filter comprises at least one capacitor claim 1 , andwherein the final control element is configured to modify the capacitor to modify the limit frequency of the filter.4. The device as claimed in claim 1 , wherein the electrical energy source is operable to output multiphase electrical energy to the source of interference claim 1 , andwherein the filter is operable to feed back the interference transients from the ground to the input of the source of interference in all phases, the measuring ...

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Номер записи: 71
06-06-2013 дата публикации

Core

Номер: US20130141202A1
Автор: Sturgess Jonathan Peter
Принадлежит: ALSTOM Technology Ltd

A magnetic fault current limiter core () comprising at least one first magnetic element () and at least one second magnetic element (), the magnetic elements () being arranged to define a substantially parallel array of magnetic elements (), the or each first magnetic element () including a soft magnetic material and the or each second magnetic element () including a hard magnetic material, wherein the or each soft magnetic material in a non-saturated state has a higher magnetic permeability than the or each hard magnetic material. 1. A magnetic fault current limiter core comprising at least one first magnetic element and at least one second magnetic element , the magnetic elements being arranged to define a substantially parallel array of magnetic elements , the or each first magnetic element including a soft magnetic material and the or each second magnetic element including a hard magnetic material , wherein the or each soft magnetic material in a non-saturated state has a higher magnetic permeability than the or each hard magnetic material.2. A magnetic fault current limiter core according to wherein at least one first magnetic element is separated from at least one neighbouring second magnetic element by an insulator.3. A magnetic fault current limiter core according to further including a plurality of first magnetic elements and/or a plurality of second magnetic elements wherein the magnetic elements are arranged to form alternating primary layers of first and second magnetic elements.4. A magnetic fault current limiter core according to wherein at least one first magnetic element and/or at least one second magnetic element includes a plurality of secondary layers of magnetic material claim 1 , each secondary layer being separated from the or each neighbouring secondary layer by an insulator.5. A magnetic fault current limiter core according to including at least one magnetic element having a hollow bore wherein a portion of at least one first magnetic element ...

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Номер записи: 72
06-06-2013 дата публикации

Electronic Device, in Particular for Protection Against Electrostatic Discharges, and Method for Protecting a Component Against Electrostatic Discharges

Номер: US20130141824A1
Автор: Bourgeat Johan, ENTRINGER Christophe, Galy Philippe, Jimenez Jean
Принадлежит:

The electronic device includes a first (BP) and a second (BN) terminal and electronic means coupled between said two terminals; the electronic means include at least one block (BLC) comprising an MOS transistor (TR) including a parasitic bipolar transistor, the MOS transistor having the drain (D) thereof coupled to the first terminal (BP), the source (S) thereof coupled to the second terminal (BN) and being additionally configured, in the event of a current pulse (IMP) between the two terminals, to operate in a hybrid mode including MOS operation in a subthreshold mode and operation of the parasitic bipolar transistor. The device can comprise two blocks (BLC, BLC) connected symmetrically between the two terminals (BP, BN) with a triac (TRC) the trigger of which is connected to the common terminal (BC) of the two blocks. 1. An electronic device , comprising a first and a second terminal and electronic means coupled between the two terminals , characterized in that the electronic means comprise at least one block comprising an MOS transistor that has a first electrode , a second electrode , a gate and includes a parasitic bipolar transistor , the MOS transistor having its first electrode coupled to the first terminal , its second electrode coupled to the second terminal and also being configured to , in the presence of a current pulse between the two terminals , operate in a hybrid mode including an MOS-type operation in a below-threshold mode and an operation of the parasitic bipolar transistor.2. The device according to claim 1 , in which the substrate and the gate of the MOS transistor are respectively left floating.3. The device according to claim 1 , in which the substrate and the gate of the MOS transistor are connected together claim 1 , the gate and the substrate of the transistor not being directly connected to one of the first and second terminals.4. The device according to claim 1 , in which the block also comprises a control circuit configured to claim 1 , ...

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Номер записи: 73
06-06-2013 дата публикации

ESD PROTECTION DEVICE

Номер: US20130141826A1
Автор: Asakura Kensaku, Hirobe Yasuhiro, SUZUKI Shingo
Принадлежит: TDK Corporation

The present invention provides an ESD protection device that not only has small electrostatic capacitance and an excellent discharge property but also has high durability against repeated use with the occurrence of short-circuiting between electrodes after discharge inhibited. An ESD protection device including an insulating substrate, electrodes arranged on this insulating substrate away from and opposite each other, and a discharge induction section located between these electrodes, wherein the discharge induction section is composed of a porous body, in which micropores are discontinuously scattered, and has a hollow structure having at least one or more hollow sections. 1. An ESD protection device comprising an insulating substrate , electrodes arranged on the insulating substrate away from and opposite each other , and a discharge induction section located between the electrodes , whereinthe discharge induction section is composed of a porous body in which micropores are discontinuously scattered, and has a hollow structure having at least one or more hollow sections.2. The ESD protection device according to claim 1 , whereinthe hollow section is formed so as to extend along a direction of connecting the electrodes.3. The ESD protection device according to claim 1 , whereinin the discharge induction section, a length of the hollow section in the direction of connecting the electrodes is 0.5 times a gap distance ΔG between the electrodes to less than discharge induction section length.4. The ESD protection device according to claim 1 , whereinthe electrodes are exposed in the hollow section.5. The ESD protection device according to claim 1 , whereinthe discharge induction section has a plurality of the hollow sections.6. The ESD protection device according to claim 1 , whereinthe porous body is a composite in which at least one type of conductive inorganic material is discontinuously dispersed in a matrix of at least one type of insulating inorganic material.7. ...

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Номер записи: 74
06-06-2013 дата публикации

CURRENT DETECTION AND LIMITING METHOD AND APPARATUS

Номер: US20130141829A1
Автор: Crespi Lorenzo, Patel Ketan B., Skov James Bunde Villadsen
Принадлежит:

An apparatus for detecting and controlling current. A current detector for generating a first value that represents an amount of current being delivered to a device. A current limit circuit for generating a second value that represents a maximum permitted current level from a current source. A current controller for controlling the amount of current drawn by the device if the first value exceeds the second value. 117-. (canceled)18. An apparatus for detecting and controlling current comprising:a current detector for generating a first value that represents an amount of current being delivered to a device;a programmable current limit circuit for generating a variable value that represents a maximum permitted current level from a current source; anda current controller for controlling the amount of current drawn by the device if the first value exceeds the variable value.19. The apparatus of wherein the first value is generated by a voltage drop across a resistor that is in line with the current being delivered to the device.20. The apparatus of wherein the programmable current limit circuit comprises:a resistor having a predetermined value; anda variable bias current source coupled to the resistor, the variable bias current source providing a predetermined current.21. The apparatus of wherein the current controller for controlling the amount of current drawn by the device if the first value exceeds the variable value comprises a gain control for controlling a gain of a pre-amplifier22. The apparatus of wherein the programmable current limit circuit comprises:a resistor having a predetermined value;a programmable bias current source coupled to the resistor, the programmable bias current source providing a first predetermined current;a second bias current source coupled to the resistor, the second bias current source providing a second predetermined current; anda switch for disconnecting the second bias current source if the first value exceeds the variable value.23. ...

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Номер записи: 75
13-06-2013 дата публикации

ESD PROTECTION DEVICE AND METHOD FOR MANUFACTURING THE SAME

Номер: US20130148244A1
Автор: Adachi Jun, Urakawa Jun, YAMAMOTO Issei
Принадлежит: MURATA MANUFACTURING CO., LTD.

An ESD protection device is manufactured such that its ESD characteristics are easily adjusted and stabilized. The ESD protection device includes an insulating substrate, a cavity provided in the insulating substrate, at least one pair of discharge electrodes each including a portion exposed in the cavity, the exposed portions being arranged to face each other, and external electrodes provided on a surface of the insulating substrate and connected to the at least one pair of discharge electrodes. A particulate supporting electrode material having conductivity is dispersed between the exposed portions of the at least one pair of discharge electrodes in the cavity 1. An ESD protection device comprising:an insulating substrate;a cavity provided in the insulating substrate;at least one pair of discharge electrodes each including a portion exposed in the cavity, the exposed portions being arranged to face each other; andexternal electrodes provided on a surface of the insulating substrate and connected to the at least one pair of discharge electrodes; whereina particulate supporting electrode material having conductivity is dispersed between the exposed portions of the at least one pair of discharge electrodes in the cavity; andan insulating material is dispersed in the cavity.2. The ESD protection device according to claim 1 , wherein the supporting electrode material is a conductive material dispersed between the at least one pair of discharge electrodes in the cavity claim 1 , and the conductive material is in contact with a bottom surface and a top surface that define the cavity.3. The ESD protection device according to claim 2 , wherein a portion of the conductive material is buried in the insulating substrate.4. The ESD protection device according to claim 2 , whereinthe insulating substrate is a ceramic substrate including a ceramic material and a glass material; andthe conductive material is fixed to the insulating substrate via the glass material.5. The ESD ...

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Номер записи: 76
20-06-2013 дата публикации

MAGNETIZING INRUSH CURRENT SUPPRESSION APPARATUS

Номер: US20130155553A1
Автор: Kawasaki Kei, Koshizuka Tadashi, MARUYAMA Shiro, NAGAYAMA Noriyuki, SAITOH Minoru
Принадлежит: KABUSHIKI KAISHA TOSHIBA

According to one embodiment, there is provided a magnetizing inrush current suppression apparatus including a transformer-side voltage measuring unit measuring a single-phase voltage, a conversion unit converting the single-phase voltage to a three-phase voltage, a residual magnetic flux calculation unit calculating residual magnetic fluxes, a voltage measuring unit measuring a voltage on the power source side, a steady magnetic flux calculation unit calculating steady magnetic fluxes, a phase determination unit determining a phase in which polarities of the steady magnetic fluxes match polarities of the residual magnetic fluxes, and a closing unit closing the circuit breaker in the phase. 1. A magnetizing inrush current suppression apparatus that suppresses a magnetizing inrush current of a circuit breaker to open and close a connection between a three-phase alternating-current power system including a power source and a Woodbridge connection or modified Woodbridge connection transformer , the apparatus comprising:a transformer-side single-phase alternating-current voltage measuring unit configured to measure a single-phase alternating-current voltage of the transformer;a transformer-side voltage conversion unit configured to convert, to a three-phase alternating-current voltage of the transformer, the single-phase alternating-current voltage of the transformer measured by the transformer-side single-phase alternating-current voltage measuring unit;a residual magnetic flux calculation unit configured to calculate residual magnetic fluxes of three lines of the transformer after disconnecting of the transformer by the circuit breaker, based on the three-phase alternating-current voltage converted by the transformer-side voltage conversion unit;a power-source-side three-phase alternating-current voltage measuring unit configured to measure a three-phase alternating-current voltage on the power source side of the circuit breaker;a steady magnetic flux calculation unit ...

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Номер записи: 77
20-06-2013 дата публикации

Electrostatic discharge protection device

Номер: US20130155554A1
Автор: Chieh-Wei He, Shih-Yu Wang, Yao-Wen Chang
Принадлежит: Macronix International Co Ltd

An electrostatic discharge protection device is provided. The electrostatic discharge protection device includes a clamp unit and a control circuit. The clamp unit provides a discharging path from a first power line to a first ground line. The control circuit receives a first power voltage from the first power line and a second power voltage from a second power line. Wherein, when the first power voltage and the second power voltage are applied, the control circuit generates an isolation signal to disconnect the discharging path. When the first power voltage and the second power voltage are not applied, the control circuit generates a trigger signal according to an electrostatic signal from the first power line to turn on the discharging path.

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Номер записи: 78
20-06-2013 дата публикации

COMPACT ELECTRONIC DEVICE FOR PROTECTING FROM ELECTROSTATIC DISCHARGE

Номер: US20130155558A1
Автор: Bourgeat Johan, Galy Philippe
Принадлежит: STMicroelectronics S.A.

A device for protecting a set of N nodes from electrostatic discharges, wherein N is greater than or equal to three, includes a set of N units respectively possessing N first terminals respectively connected to the N nodes and N second terminals connected together to form a common terminal. Each unit includes at least one MOS transistor including a parasitic transistor connected between a pair of the N nodes and configured, in the presence of a current pulse between the pair of nodes, to operate, at least temporarily, in a hybrid mode including MOS-type operation in a sub-threshold mode and operation of the bipolar transistor. 1. A device for protecting a set of N nodes from electrostatic discharge , N being three or more , comprising:a set of N units respectively possessing N first terminals respectively connected to the N nodes and N second terminals connected together to form a common terminal,wherein each unit comprises at least one MOS transistor including a parasitic transistor connected between two terminals of the MOS transistor and configured, in the presence of a current pulse between the two terminals, to operate, at least temporarily, in a hybrid mode including MOS-type operation in a sub-threshold mode and operation of the bipolar transistor.2. The device according to claim 1 , wherein the MOS transistor has a first electrode coupled to the first terminal claim 1 , a second electrode coupled to said common terminal claim 1 , a gate coupled to a substrate of the MOS transistor without being directly coupled to the first terminal claim 1 , and a resistive element coupled between the substrate of the MOS transistor and the first terminal.3. The device according to claim 1 , further comprising a triggerable element possessing at least one control electrode that is connected between each pair of nodes in the set of nodes claim 1 , the control electrodes of all the triggerable elements being connected to said common terminal.4. The device according to claim 3 ...

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Номер записи: 79
20-06-2013 дата публикации

Intrinsically Safe Energy Limiting Circuit

Номер: US20130155564A1
Автор: SCHMIDT Glen Eugene
Принадлежит: SIEMENS AKTIENGESELLSCHAFT

An intrinsically safe energy limiting circuit for connection between an upstream DC power source and a downstream electrical load powered from the upstream DC power source, wherein the circuit comprises from upstream to downstream an input to be connected to the DC power source, an electronic current limiter configured to limit a current through the circuit to a maximum value if the current reaches this value, a fuse designed to open at a current value greater than the maximum value, a DC-to-DC converter configured to convert a DC input voltage to a lower nominal DC output voltage, a zener barrier having a zener voltage higher than the DC output voltage, and an output for connection to the electrical load. 112321. An intrinsically safe energy limiting circuit () for connection between an upstream DC power source () and a downstream electrical load () powered from the upstream DC power source () , said energy limiting circuit () from upstream to downstream comprising:{'b': 5', '2, 'an input () for connection to the upstream DC power source ();'}{'b': '11', 'an electronic current limiter () configured to limit a current through the energy limiting circuit to a maximum value if the current reaches the maximum value;'}{'b': '10', 'a fuse () designed to open at a current value greater than said maximum value;'}{'b': '7', 'a DC-to-DC converter () configured to convert a DC input voltage to a lower nominal DC output voltage;'}{'b': '8', 'a zener barrier () having a zener voltage higher than the DC output voltage; and'}{'b': 6', '3, 'an output () for connected to the downstream electrical load ().'}230. The energy limiting circuit of claim 1 , further comprising for each of at least one further electrical load () to be powered:{'b': 70', '10, 'a further DC-to-DC converter () downstream connected to said fuse () and configured to convert the DC input voltage to a further lower DC output voltage;'}{'b': '80', 'a further zener barrier () having a zener voltage higher than the ...

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Номер записи: 80
27-06-2013 дата публикации

Bi-directional back-to-back stacked scr for high-voltage pin esd protection, methods of manufacture and design structures

Номер: US20130161687A1
Автор: Christopher S. Putnam, Junjun Li, Michel J. Abou-Khalil, Robert J. Gauthier, Jr., Souvick Mitra, Tom C. Lee
Принадлежит: International Business Machines Corp

Bi-directional back-to-back stacked SCRs for high-voltage pin ESD protection, methods of manufacture and design structures are provided. The device includes a symmetrical bi-directional back-to-back stacked silicon controlled rectifier (SCR). An anode of a first of the back-to-back stacked SCR is connected to an input. An anode of a second of the back-to-back stacked SCR is connected to ground. Cathodes of the first and second of the back-to-back stacked SCR are connected together. Each of the symmetrical bi-directional back-to-back SCRs include a pair of diodes directing current towards the cathodes which, upon application of a voltage, become reverse biased effectively and deactivating elements from one of the symmetrical bi-directional back-to-back SCRs while the diodes of another of the symmetrical bi-directional back-to-back SCRs direct current in the same direction as the reverse biased diodes.

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Номер записи: 81
27-06-2013 дата публикации

HIGH HOLDING VOLTAGE, MIXED-VOLTAGE DOMAIN ELECTROSTATIC DISCHARGE CLAMP

Номер: US20130163128A1
Автор: Marichal Oliver, Van Camp Benjamin, Van der Borght Johan, Van Wijmeersch Sven
Принадлежит: Sofics BVBA

An electrostatic discharge (ESD) protection circuit is disclosed including at least a clamping device, a switching device, and a voltage limiter. The ESD protection circuit may include devices of different voltage domains. The switching device may be in series with the clamping device to block at least a portion of a voltage from dropping across the clamping device. The switching device may sustain higher maximum operating voltages than the clamping device. 1. An electrostatic discharge (ESD) protection circuit , for protecting circuitry , coupled between a first node and a second node , comprising:at least one clamping device of a first voltage domain coupled to the first node;a switching device of a second voltage domain coupled in series with the at least one clamping device and coupled to the second node; anda voltage limiter coupled to the at least one clamping device and configured to limit a voltage over the at least one clamping device.2. The ESD protection circuit of claim 1 , wherein a voltage level of the second voltage domain is higher than a voltage level of the first voltage domain.3. The ESD protection circuit of claim 1 , wherein a maximum voltage level corresponding to reliability and leakage requirements of the second voltage domain is higher than a voltage level corresponding to reliability and leakage requirements of the first voltage domain.4. The ESD protection circuit of claim 1 , wherein the at least one clamping device includes a plurality of serially-coupled clamping devices.5. The ESD protection circuit of claim 1 , wherein the at least one clamping device includes at least one metal oxide semiconductor (MOS) device.6. The ESD protection circuit of claim 5 , wherein the at least one MOS device is at least one low-voltage domain MOS device.7. The ESD protection circuit of claim 5 , wherein each MOS device of the at least one MOS device comprises a gate and a source claim 5 , and wherein the gate of each MOS device is connected to the ...

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Номер записи: 82
27-06-2013 дата публикации

ELECTROSTATIC DISCHARGE (ESD) PROTECTION AND OPERATING METHOD THEREOF

Номер: US20130163129A1
Автор: LAI Da-Wei, MA Wade
Принадлежит: Taiwan Semiconductor Manufacturing Company, Ltd.

An electrostatic discharge (ESD) protection circuit includes a clamp transistor, and inverter, a resistance-capacitance (RC) circuit, and a current mirror. The clamp transistor is coupled between a first supply node and a second supply node. The inverter has an input end and an output end, and the output end of the inverter is coupled with a gate of the clamp transistor. The RC circuit is coupled to the first supply node. The current mirror includes a first transistor and a second transistor. The first transistor is coupled between the input end of the inverter and the second supply node, and the second transistor is coupled between the RC circuit and the second supply node. 1. An electrostatic discharge (ESD) protection circuit , comprising:a clamp transistor coupled between a first supply node and a second supply node;an inverter having an input end and an output end, the output end of the inverter being coupled with a gate of the clamp transistor;a resistance-capacitance (RC) circuit coupled to the first supply node; anda current mirror including a first transistor and a second transistor, the first transistor being coupled between the input end of the inverter and the second supply node, and the second transistor being coupled between the RC circuit and the second supply node.2. The ESD protection circuit of claim 2 , wherein the RC circuit comprises:a resistive device having a first end coupled to the input end of the inverter; anda capacitive device having a first end coupled to the resistive device and the input end of the inverter.3. The ESD protection circuit of claim 1 , further comprising a circuit coupled with the input end of the inverter claim 1 , the circuit being configured to output a voltage state on the input end of the inverter that is capable of substantially turning off the clamp transistor responsive to a latch-up event.4. The ESD protection circuit of claim 3 , wherein the circuit comprises:a third transistor, a source end of the third ...

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Номер записи: 83
27-06-2013 дата публикации

ESD PROTECTION STRUCTURE AND METHOD FOR MANUFACTURING THE SAME

Номер: US20130163130A1
Автор: Adachi Jun, Noma Takashi, YAMADA Kosuke
Принадлежит: MURATA MANUFACTURING CO., LTD.

An ESD protection device includes an alumina multilayer substrate, a hollow portion, a discharge electrode pair, discharge-assisting electrodes, and a vitreous substance. The hollow portion is disposed inside of the alumina multilayer substrate. The electrodes of the discharge electrode pair are disposed opposite to each other at an interface between the hollow portion and the alumina multilayer substrate. The discharge-assisting electrodes are disposed dispersedly between the opposite electrodes of the discharge electrode pair. The vitreous substance covers the discharge-assisting electrodes in the inside of the hollow portion. A trial discharge is executed so as to induce creepage discharge between the electrodes of the discharge electrode pair in advance. 1. An ESD protection structure comprising:an insulating portion;a pair of discharge electrodes disposed at a distance from each other on a surface of the insulating portion;discharge-assisting electrodes disposed between the pair of discharge electrodes and including insulating material-coated metal particles and/or semiconductor particles; anda vitreous substance disposed around the discharge-assisting electrodes to embed the discharge-assisting electrodes in the vitreous substance; whereindischarge craters, at which the discharge-assisting electrodes are exposed, are disposed in the vitreous substance and defined by a removed portion of the vitreous substance.2. The ESD protection structure according to claim 1 , further comprising a hollow portion disposed adjoining the surface of the insulating portion is further included.3. The ESD protection structure according to claim 1 , wherein the insulating material-coated metal particles are alumina-coated Cu particles and the semiconductor particles are SiC particles provided with oxide films.4. The ESD protection structure according to claim 1 , wherein the insulating portion is an alumina multilayer substrate.5. The ESD protection structure according to claim 1 , ...

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Номер записи: 84
27-06-2013 дата публикации

ELECTRONIC COMPONENT PROTECTION POWER SUPPLY CLAMP CIRCUIT

Номер: US20130163131A1
Автор: Anderson Warren, Gist, III William B.
Принадлежит: Advanced Micro Devices, Inc.

Electronic component protection power supply clamp circuits comprising a plurality of p-type channel metal-oxide-semiconductor (PMOS) and n-type channel metal-oxide-semiconductor (NMOS) transistors are described. These clamp circuits use a feedback latching circuit to retain an electrostatic discharge (ESD)-triggered state and efficiently conduct ESD current that has been diverted into the power supply, in order to dissipate ESD energy. The feedback latching circuit also maintains a clamp transistor in its off state if the clamp circuit powers up untriggered, thus enhancing the clamp circuit's immunity to noise during normal operation. Passive resistance initialization of key nodes to an untriggered state, as well as passive resistance gate input loading of a large ESD clamping transistor, further enhances the clamp circuit's immunity to false triggering. This also lengthens the time that the clamp circuit remains in the ESD-triggered state during human body model (HBM) or other long duration detected ESD events. 1. An electronic component protection power supply clamp circuit connected to a positive terminal and a negative terminal of a power supply , the clamp circuit comprising:a feedback latching circuit including a first p-type metal-oxide-semiconductor (PMOS) transistor and a first n-type metal-oxide-semiconductor (NMOS) transistor;a clamp transistor;a capacitor having a first end that is connected to the negative power supply terminal, and a second end that is connected to a drain terminal of the first PMOS transistor and a drain terminal of the first NMOS transistor;a first resistor having a first end that is connected to the positive power supply terminal, and a second end that is connected to the second end of the capacitor;a plurality of inverters connected between the second end of the first resistor and a gate terminal of the clamp transistor;a second resistor having a first end that is connected to the negative power supply terminal, and a second end ...

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Номер записи: 85
04-07-2013 дата публикации

INTEGRATED CIRCUIT HAVING A CHARGED-DEVICE MODEL ELECTROSTATIC DISCHARGE PROTECTION MECHANISM

Номер: US20130170082A1
Автор: LIANG YUNG CHIH, YEH CHIH TING
Принадлежит: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

An integrated circuit having charged-device model (CDM) electrostatic discharge (ESD) protection includes an I/O circuit, at least one CDM ESD protection device, and at least one internal circuit. The integrated circuit further includes at least one TSV (Through Silicon Via) each being coupled between a ground of at least one ground of the input/output circuit and one of the at least one ESD protection device, wherein each of the at least one ESD protection device is coupled between one of the at least one TSV and a ground of one of the at least one internal circuit. 1. An integrated circuit having a CDM (Charged-Device Model) ESD (Electrostatic Discharge) protection , comprising:an input/output circuit; andat least one ESD protection device coupled between at least one ground of the input/output circuit and a ground of at least one internal circuit.2. The integrated circuit of claim 1 , wherein one of the at least one ESD protection device is coupled between a ground of one of the at least one internal circuit and a ground of another one of the at least one internal circuit.3. The integrated circuit of claim 1 , wherein the at least one ESD protection device includes a CDM ESD protection device.4. The integrated circuit of claim 3 , wherein the CDM ESD protection device includes a gateway circuit.5. The integrated circuit of claim 4 , wherein the gateway circuit provides a conducting path having a low resistance during normal operation of the integrated circuit.6. The integrated circuit of claim 4 , wherein the gateway circuit provides a conducting path to allow a dual-directional conduction during a CDM ESD event.7. The integrated circuit of claim 4 , wherein the gateway circuit has a conducting voltage during a CDM ESD event.8. The integrated circuit of further comprising:at least one TSV (Through Silicon Via) coupled between a ground of the at least one ground of the input/output circuit and the at least one ESD protection device.9. The integrated circuit of ...

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Номер записи: 86
04-07-2013 дата публикации

Power supply apparatus including overvoltage protection function

Номер: US20130170085A1
Автор: Dae Young Hwang, Deuk Hoon Kim, Geun Young Park, Jae Sun Won, Jeong Myeon Kim, Jong Hae Kim, Myeong Jeong Kim, Young Min Lee
Принадлежит: Samsung Electro Mechanics Co Ltd

There is provided a power supply apparatus including an overvoltage protection function, the power supply apparatus including: a power supply unit supplying a predetermined input power supply; a rectification unit generating a first power supply by rectifying the input power supply; a main circuit unit generating a second power supply from the first power supply; and an overvoltage blocking unit blocking overvoltages and overcurrents, wherein the overvoltage blocking unit includes varistors connected between at least one of a live line and a neutral line of the input power supply and a ground.

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Номер записи: 87
11-07-2013 дата публикации

Over-voltage protection device for resonant wireless power transmission device and method for controlling the over-voltage protection device

Номер: US20130176652A1
Автор: Kang-Ho Byun, Se-Ho Park, Sung-Ku Yeo, Yu-Su Kim
Принадлежит: SAMSUNG ELECTRONICS CO LTD

Provided is an over-voltage protection device for a resonant wireless power transmission device. The over-voltage protection device includes an amplifier for amplifying a transmission signal, a resonance signal generator for generating a wireless resonance signal according to the transmission signal amplified by the amplifier, a voltage detector for sensing a voltage of the wireless resonance signal generated by the resonance signal generator, and a controller for monitoring the voltage detected by the voltage detector to determine whether the voltage repetitively increases and decreases with periodicity when the voltage is greater than a reference voltage and controlling the amplifier to decrease an output of the transmission device by a value according to a result of the determination.

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Номер записи: 88
11-07-2013 дата публикации

OVER-VOLTAGE PROTECTION DEVICE FOR RESONANT WIRELESS POWER RECEPTION DEVICE AND METHOD FOR CONTROLLING THE OVER-VOLTAGE PROTECTION DEVICE

Номер: US20130176653A1
Автор: KIM Joon-IL, Kim Yu-Su, Park Se-Ho, PARK Sung-Kweon
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

Provided is an over-voltage protection device for a resonant wireless power reception device. The over-voltage protection device includes a resonance signal receiver for receiving a wireless resonance signal transmitted from a wireless power transmission device, an over-voltage protector which is driven by a driver in an over-voltage protection operation to detune a resonance frequency of the reception device, thereby reducing reception power, the driver for driving the over-voltage protector according to a control signal in the over-voltage protection operation, and a controller for outputting the control signal for driving the over-voltage protector to the driver when it is determined that over-voltage occurs. 1. An over-voltage protection device for a resonant wireless power reception device , the over-voltage protection device comprising:a resonance signal receiver for receiving a wireless resonance signal transmitted from a wireless power transmission device;an over-voltage protector which is driven by a driver in an over-voltage protection operation to detune a resonance frequency of the reception device, thereby reducing reception power;the driver for driving the over-voltage protector according to a control signal in the over-voltage protection operation; anda controller for outputting the control signal for driving the over-voltage protector to the driver when it is determined that over-voltage occurs.2. The over-voltage protection device of claim 1 , wherein the over-voltage protector comprises resonance-detuning first and second capacitors which are connected with two connection terminals of a resonator of the resonance signal receiver claim 1 , respectively.3. The over-voltage protection device of claim 2 , wherein the driver comprises a switch structure in which the driver performs a switching operation according to the control signal output from the controller to connect the first and second capacitors of the over-voltage protector to a ground terminal ...

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Номер записи: 89
18-07-2013 дата публикации

DESTRUCTIVE ELECTROSTATIC DISCHARGE DAMAGE PREVENTION OF GARMENTS

Номер: US20130182358A1
Автор: Turner John C.
Принадлежит:

A method and system for the prevention of Destructive Electrostatic Discharge (DED) damage to outer garments caused by triboelectric charge discharging to the wearer's body through a distinct point of discharge at a conductor in contact with or close proximity to the wearer's skin. The method consists of interposing an insulating layer of high dielectric strength at the conductor such that the conductor is insulated from either the skin of the wearer or the outer garment and the circuit of triboelectric charge through the conductor is broken. The system includes a conductor and an insulating layer positioned between the outer garment and the skin of the wearer on either side of the conductor. 1. A method for the prevention of Destructive Electrostatic Discharge (DED) damage to outer garments caused by triboelectric charge discharging to the wearer's body through a distinct point of discharge at a conductor in contact with or close proximity to the wearer's skin wherein the method consists of interposing an insulating layer of high dielectric strength at the conductor such that the conductor is insulated from either the skin of the wearer or the outer garment and the circuit of triboelectric charge through the conductor is broken.2. A system for the prevention of DED damage to outer garments at a distinct point of discharge at a conductor in contact with or close proximity to the wearer's skin and in close proximity to the wearer's outer garment , the system comprising an insulating layer positioned between the outer garment and the skin of the wearer on either side of the conductor.3. The system of wherein the conductor is a metal stud.4. The system of wherein the insulating layer has a high dielectric strength such that the thickness of the layer can be kept to a minimum.5. The system of wherein the insulating layer is rubber.6. The system of wherein the insulating layer is held in position by means of adhesive between the insulating layer and the supporting fabric ...

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Номер записи: 90
18-07-2013 дата публикации

ELECTROSTATIC DISCHARGE PROTECTION CIRCUIT

Номер: US20130182359A1
Автор: Jeon Chan Hee, KIM Doo Hyung, Kim Han Gu, Lee Ki Tae, Lim Hong Wook, Seo Woo Jin
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

An electrostatic discharge (ESD) protection circuit includes a first power line; a second power line; a ground line; two stack transistors connected in series between the first power line and the ground line; a first resistor connected between the first power line and a first node; a first transistor and a capacitor connected in series between the first node and the ground line; a second transistor connected between the second power line and a second node; a third transistor connected between the first power line and a third node; an inverter, connected between the third node and the ground line, and having an input connected to the second node; a fourth transistor, connected to the first power line, and having a gate connected to the second node; and a fifth transistor, connected between the second power line and the third node, and having a gate connected to a terminal of the fourth transistor. 1. An electrostatic discharge protection circuit comprising:a first power line configured to provide a first power supply voltage;a second power line configured to provide a second power supply voltage;a ground line connected to a ground voltage terminal;at least two stack transistors connected in series between the first power line and the ground line;a first resistor connected between the first power line and a first node;a first transistor and a first capacitor connected in series between the first node and the ground line;a second transistor, connected between the second power line and a second node, and having a gate connected to the ground line;a third transistor, connected between the first power line and a third node, and having a gate connected to the first node;an inverter, connected between the third node and the ground line, and having an input connected to the second node;a fourth transistor, connected to the first power line, and having a gate connected to the second node; anda fifth transistor, connected between the second power line and the third node, and ...

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Номер записи: 91
18-07-2013 дата публикации

Overvoltage protection circuit for at least one branch of a half-bridge, inverter, dc/dc voltage converter and circuit arrangement for operating an electrical machine

Номер: US20130182471A1
Автор: Albrecht Schwarz, Heiner Jacobs
Принадлежит: ROBERT BOSCH GMBH

An overvoltage protection circuit is provided for at least one branch of a half-bridge which includes a controllable semiconductor switch element and a free-wheeling diode connected in series and situated on a common circuit substrate. The protection circuit includes a commutation branch connected in parallel with the half-bridge branch, the commutation branch including at least one commutation capacitor also situated on the circuit substrate.

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Номер записи: 92
25-07-2013 дата публикации

Pilot signal generation circuit

Номер: US20130187716A1
Автор: Albert Flack
Принадлежит: AeroVironment Inc

In various embodiments, a pilot signal generation circuit is provided having an operational amplifier buffer connected via a first resistor to receive a source reference voltage. A differential amplifier is connected at a first input to receive the source reference voltage and at a second input to an output of the operational amplifier buffer. A first shunt transistor is connected to shunt the source reference voltage at the operational amplifier buffer in response to pulse width modulated signal. A second shunt transistor is connected to the differential operational amplifier so as to shunt the source reference voltage in response to an output of the first shunt transistor. The output of the differential amplifier provides a pulse width modulated bipolar signal at precision voltage levels in response to the pulse width modulated signal.

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Номер записи: 93
25-07-2013 дата публикации

PROTECTION CIRCUIT

Номер: US20130188289A1
Автор: Misawa Katsuhiko, Takemura Ko, TANIGUCHI TAKUYA, YOSHIDA Masafumi
Принадлежит: THINE ELECTRONICS, INC.

A protection circuit of a first embodiment comprises a resistance-variable switch , an overcurrent detection unit , a control voltage application unit , a capacity unit , a control terminal voltage change unit , and an outer terminal . The resistance-variable switch has a control terminal , a first terminal , and a second terminal . The control terminal voltage change unit includes a switch and a resistor which are provided in series between the control terminal of the resistance-variable switch and a reference potential terminal. 1. A protection circuit comprising:{'sub': 1', '2', '2', '1, 'a resistance-variable switch having a control terminal and first and second terminals, the first and second terminals yielding therebetween a resistance value continuously monotonously changing with respect to a control voltage applied to the control terminal within the range from Vto V, the resistance value being greater when the control voltage is Vthan when V;'}a capacity unit having one end connected to the control terminal of the resistance-variable switch;an overcurrent detection unit for outputting an overcurrent detection signal turning from an insignificant value to a significant value when a current flowing between the first and second terminals of the resistance-variable switch is greater than a predetermined threshold;a control voltage application unit for outputting and applying a control voltage value from an output end to the control terminal of the resistance-variable switch when the overcurrent detection signal is the insignificant value and placing the output terminal into a high impedance state when the overcurrent detection signal is the significant value; and{'sub': 1', '2, 'a control terminal voltage change unit for continuously changing the voltage value at the control terminal of the resistance-variable switch from Vto Vby discharging or charging the capacity unit when the overcurrent detection signal is the significant value.'}2. A protection circuit ...

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Номер записи: 94
25-07-2013 дата публикации

FAST-CYCLING, CONDUCTION-COOLED, QUASI-ISOTHERMAL, SUPERCONDUCTING FAULT CURRENT LIMITER

Номер: US20130190187A1
Автор: Collings Edward, Majoros Milan, Sumption Michael
Принадлежит: The Ohio State University

Fault Current Limiters (FCL) provide protection for upstream and/or downstream devices in electric power grids. Conventional FCL require the use of expensive conductors and liquid or gas cryogen handling. Disclosed embodiments describe FCL systems and devices that use lower cost superconductors, require no liquid cryogen, and are fast cycling. These improved FCL can sustain many sequential faults and require less time to clear faults while avoiding the use of liquid cryogen. Disclosed embodiments describe a FCL with a superconductor and cladding cooled to cryogenic temperatures; these are connected in parallel with a second resistor across two nodes in a circuit. According to disclosed embodiments, the resistance of the superconducting components and its sheath in the fault mode are sufficiently high to minimize energy deposition within the cryogenic system, minimizing recovery time. A scheme for intermediate heat storage also is described which allows a useful compromise between conductor length enabled energy minimization and allowable number of sequential faults to enable an overall system design which is affordable, and yet allows conduction cooled (cryogen free) systems which have fast recovery and allows for multiple sequential faults. 1. A resistive type superconducting fault current limiter which is conduction cooled , using a cryocooler and no liquid cryogen , which has at the same time a fast recovery , comprising:an input node;an output node;a wire forming a coil, coupled between the input node and the output node, comprising:{'sub': '1', 'a first impedance element of a first material having resistance Rwhich can be variable under either temperature or electric field; and'}{'sub': '2', 'a second impedance element of a second material forming a sheath around the first impedance element, the material having resistance R; and'}{'sub': '3', 'a third impedance element of a third material having resistance R, coupled in parallel with the coil.'}2. The current ...

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Номер записи: 95
01-08-2013 дата публикации

ELECTRIC POWER CONTROL APPARATUS, ELECTRIC POWER CONTROL METHOD, ELECTRIC POWER CONTROL PROGRAM, AND RECORDING MEDIUM

Номер: US20130193776A1
Автор: Tanaka Hideyuki
Принадлежит: SHARP KABUSHIKI KAISHA

An electric power control section includes: a temperature detecting section for detecting temperatures of a battery; and an accumulation counter for accumulating numerical values assigned to the respective temperatures of the battery which have been detected by the temperature detecting section. The electric power control section reduces electric power supply to an LCD display section when an accumulated value obtained by the accumulation counter exceeds a preset value. 1. An electric power control apparatus for controlling electric power supply to a device , comprising:temperature detecting means for detecting temperatures of the device; andaccumulation means for accumulating numerical values assigned to the respective temperatures of the device which have been detected by the temperature detecting means,the electric power control apparatus reducing the electric power supply to the device when an accumulated value obtained by the accumulation means exceeds a preset value.2. The electric power control apparatus as set forth in claim 1 , wherein:the numerical values assigned to the respective temperatures are weighted values obtained by weighting with respect to the respective temperatures; andthe accumulation means calculates, as the accumulated value, a value obtained by accumulating the weighted values.3. The electric power control apparatus as set forth in claim 1 , wherein:the numerical values assigned to the respective temperatures are sampling times set for the respective temperatures; andthe accumulation means calculates, as the accumulated value, a count value obtained by counting at the sampling times.4. An electric power control method for controlling electric power supply to a device claim 1 , comprising the steps of:(a) detecting temperatures of the device;(b) accumulating numerical values assigned to the respective temperatures of the device which have been detected by the step (a); and(c) carrying out electric power control for reducing or stopping the ...

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Номер записи: 96
01-08-2013 дата публикации

Voltage regulator

Номер: US20130193939A1
Автор: Kaoru Sakaguchi, Teruo Suzuki
Принадлежит: Seiko Instruments Inc

Provided is a variable output voltage regulator capable of reducing heat generation during an overcurrent protection operation even when a setting value of an output voltage is high. The variable output voltage regulator can change an output voltage by trimming a resistor of a voltage dividing circuit in response to a trimming signal output from a trimming signal generation circuit. The trimming signal is used to change a limiting voltage of a fold-back type overcurrent protection circuit.

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Номер записи: 97
01-08-2013 дата публикации

Devices and methods related to electrostatic discharge-protected cmos switches

Номер: US20130194158A1
Автор: Ying-Kuang Chen
Принадлежит: Skyworks Solutions Inc

Disclosed are devices and methods related to a CMOS switch for radio-frequency (RF) applications. In some embodiments, the switch can be configured to include a resistive body-floating circuit to provide improved power handling capability. The switch can further include an electrostatic discharge (ESD) protection circuit disposed relative to the switch to provide ESD protection for the switch. Such a switch can be implemented for different switching applications in wireless devices such as cell phones, including band-selection switching and transmit/receive switching.

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Номер записи: 98
01-08-2013 дата публикации

CURRENT LIMITER

Номер: US20130194703A1
Автор: HUSBAND Stephen Mark, PEI Xiaoze, SHUTTLEWORTH Roger, SMITH Alexander Charles
Принадлежит: ROLLS-ROYCE PLC

This invention relates to a current limiter comprising a first circuit portion arranged in parallel with a second circuit portion, the first circuit portion comprising a superconductor element arranged in series with a switching arrangement, the second circuit portion comprising a load element, the superconductor element being disposed within a cooling chamber, and the cooling chamber and the switch being disposed within a vacuum chamber, wherein the switching arrangement comprises: a mechanical actuator which is operable between a closed condition in which current is conducted through the first circuit portion and an open condition in which current is diverted from the first circuit portion through the second circuit portion and a controller for monitoring and operating the switch. 1. A current limiter comprising a first circuit portion arranged in parallel with a second circuit portion , the first circuit portion comprising a superconductor element arranged in series with a switching arrangement , the second circuit portion comprising a load element , the superconductor element being disposed within a cooling chamber , and the cooling chamber and the switch being disposed within a vacuum chamber , wherein the switching arrangement comprises:a mechanical actuator which is operable between a closed condition in which current is conducted through the first circuit portion and an open condition in which current is diverted from the first circuit portion through the second circuit portion and a controller for monitoring and operating the switch.2. A current limiter as claimed in claim 1 , further comprising a capacitive forced commutation circuit which is configured to enable a dc zero current switching.3. A current limiter as claimed in claim 1 , wherein the controller is configured to operate the switch in a pulsed mode providing current and phase pulses into a network.4. A current limiter as claimed in claim 1 , wherein the switching arrangement further comprises a ...

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Номер записи: 99
08-08-2013 дата публикации

Electronic device and method for protecting against damage by electrostatic discharge

Номер: US20130201583A1
Автор: Markus Rommel
Принадлежит: TEXAS INSTRUMENTS DEUTSCHLAND GMBH

An electronic device with a protective circuit against damage by electrostatic discharge includes a discharge current path connectable between an input to be protected and a ground pin. An enabling circuit outputs a control signal for connecting the discharge current path in the event of an electrostatic discharge. A deactivating circuit which deactivates the enabling circuit during operation of the electronic device is controlled by the inverted control signal. A method of protecting an electronic device against damage by electrostatic discharge includes providing a control signal for connecting a discharge current path between an input to be protected and a ground pin in the event of an electrostatic discharge. An inverted control signal is applied to the inverted control signal to a deactivating circuit. The inverted control signal prevents connection of the discharge current path between the input to be protected and ground during operation of the electronic device.

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Номер записи: 100