Power conditioning unit

The present invention relates to a power conditioning unit for delivering power from a dc power source to an ac output, particularly ac voltages greater than 50 volts, either for connecting directly to a grid utility supply, or for powering mains devices independent from the mains utility supply. We describe a power conditioning unit for delivering power from a dc power source to an ac mains output, the power conditioning unit comprising an input for receiving power from said dc power source, an output for delivering ac power, an energy storage capacitor, a dc-to-dc converter having an input connection coupled to said input and an output connection coupled to the energy storage capacitor, and a dc-to-ac converter having an input connection coupled to said energy storage capacitor and an output connection coupled to said output, wherein said energy storage capacitor has a capacitance of less than twenty microfarads.

Wireless energy transfer with variable size resonators for medical applications

A medical device-powering wireless receiver for use with a first electromagnetic resonator coupled to a power supply. The wireless receiver includes a load configured to power an implantable medical device using electrical power, and a second electromagnetic resonator adapted to be housed within the medical device and configured to be coupled to the load, wherein the second electromagnetic resonator is configured to be wirelessly coupled to the first electromagnetic resonator to provide resonant, non-radiative wireless power to the second electromagnetic resonator from the first electromagnetic resonator, the area circumscribed by the inductive element of at least one of the electromagnetic resonators can be varied to improve performance.

Solar generation method and system

The invention describes a solar generation method by means of a system ( 1 ) comprising a set of solar cells ( 2 ) connected to an inverter ( 4 ) that transmits the energy generated to an electrical network ( 6 ), which comprises controlling the active and reactive power that the system ( 1 ) transmits to the electrical network ( 6 ) by controlling the voltage (V cell ) of the cells ( 2 ) and the output current (I inv ) of the inverter ( 4 ), such that: in a first mode of operation, the voltage (V cell ) of the cells ( 2 ) provides the maximum active power in accordance with the operating conditions; and, in a second mode of operation, the voltage (V cell ) in the cells ( 2 ) is different from the voltage that provides the maximum active power, generating an active power that is lower than the maximum, in order to optimise the integration of the solar generation system ( 1 ) into the electrical network ( 6 ).

System and method for providing stable control for power systems

System and method for providing stable control for power systems. According to an embodiment, the present invention provides an apparatus for providing one or more control signals for a power system. The apparatus includes an input terminal for receiving an electrical energy, which can be characterized by a first input voltage. The apparatus includes a control component that is configured to generate a first control signal based on at least information associated with the first input voltage. The apparatus additionally includes an output terminal for sending the first control signal. Moreover, the apparatus includes a timing component that is coupled to the control component. The control component is configured to process at least information associated with a first value of the first input voltage at a first time and a first reference voltage and to generate a second control signal.

Battery Management for a Breathing Assistance System

A method for providing battery security in a breathing assistance system configured to provide breathing assistance to a patient is provided. A battery security system of the breathing assistance system receives battery data from a battery received in the breathing assistance system, and analyzes the received battery data to determine whether the battery is approved for use in the breathing assistance system. If the battery is determined to be approved for use in the breathing assistance system, the battery is allowed to provide power to the breathing assistance system. If the battery is not determined to be approved for use in the breathing assistance system, the battery is prevented from providing power to the breathing assistance system.

Dimmer having a microprocessor-controlled power supply

A load control device for control of the power delivered to an electrical load from a source of AC voltage, the load control device comprising: a controllably conductive device adapted to be coupled between the source of AC voltage and the electrical load; a microprocessor coupled to the controllably conductive device for controlling the power delivered to the load; a power supply adapted to draw current from the source of AC voltage through the electrical load for generating a DC voltage across an energy storage capacitor for powering the microprocessor and the LED; and a load circuit drawing current from the energy storage capacitor of the power supply; wherein the microprocessor is operable to cause the load circuit to draw less current in response to determining that the energy storage capacitor does not have enough time to charge during each half-cycle of the AC voltage.

Method and Apparatus for Power Control

Embodiments of the present invention relate to limiting maximum power dissipation occurred in a processor. Therefore, when an application that requires excessive amounts of power is being executed, the execution of the application may be prevented to reduce dissipated or consumed power.

Method and apparatus for power conversion

A method and apparatus for converting a first power to a second power. In one embodiment, the apparatus comprises a power conversion circuit for receiving the first power and a controller, coupled to the power conversion circuit, for dynamically selecting between a regular mode and a quasi-resonant mode for operating the power conversion circuit to convert the first power to the second power.

Method and apparatus for power conversion

A method and apparatus for converting a first power to a second power. In one embodiment the apparatus comprises a power conversion circuit for receiving the first power; and a controller, coupled to the power conversion circuit, for dynamically selecting between a non-interleaved mode and an interleaved mode for operating the power conversion circuit to convert the first power to the second power.

PRIMARY VOLTAIC SOURCES INCLUDING NANOFIBER SCHOTTKY BARRIER ARRAYS AND METHODS OF FORMING SAME

Primary voltaic sources include nanofiber Schottky barrier arrays and a radioactive source including at least one radioactive element configured to emit radioactive particles. The arrays have a semiconductor component and a metallic component joined at a metal-semiconductor junction. The radioactive source is positioned proximate to the arrays such that at least a portion of the radioactive particles impinge on the arrays to produce a flow of electrons across the metal-semiconductor junction. Methods of producing voltaic sources include reacting at least one carbon oxide and a reducing agent in the presence of a substrate comprising a catalyst to form a solid carbon product over the substrate. Material is disposed over at least a portion of the solid carbon product to form a nanofiber Schottky barrier array. A radioactive source is disposed adjacent the nanofiber Schottky barrier array. 1. A primary voltaic source , comprising:a nanofiber Schottky barrier array comprising a semiconductor component and a metallic component joined at a metal-semiconductor junction; anda radioactive source comprising at least one radioactive element configured to emit radioactive particles and positioned proximate to the nanofiber Schottky barrier array such that at least a portion of the radioactive particles impinge on the nanofiber Schottky barrier array to produce a flow of electrons across the metal-semiconductor junction.2. The primary voltaic source of claim 1 , wherein the semiconductor component comprises a semiconductor carbon fiber nanotube and the metallic component comprises a metallic coating over the semiconductor carbon fiber nanotube.3. The primary voltaic source of claim 1 , wherein the metallic component comprises a metallic carbon fiber nanotube and the semiconductor component comprises a semiconductor coating over the metallic carbon fiber nanotube.4. The primary voltaic source of claim 1 , wherein the semiconductor component comprises a semiconductor nanofiber and ...

Two-wire dimmer switch for low-power loads

A two-wire load control device (such as, a dimmer switch) for controlling the amount of power delivered from an AC power source to an electrical load (such as, a high-efficiency lighting load) includes a thyristor coupled between the source and the load, a gate coupling circuit coupled between a first main load terminal and the gate of the thyristor, and a control circuit coupled to a control input of the gate coupling circuit. The control circuit generates a drive voltage for causing the gate coupling circuit to conduct a gate current to thus render the thyristor conductive at a firing time during a half cycle of the AC power source, and to allow the gate coupling circuit to conduct the gate current at any time from the firing time through approximately the remainder of the half cycle, where the gate coupling circuit conducts approximately no net average current to render and maintain the thyristor conductive.

Method and circuit for storing and providing historical physiological data

Embodiments of the present invention include systems and methods that relate to pulse oximetry. Specifically, one embodiment includes an oximeter sensor comprising a light emitting element configured to emit light, a light detector configured to detect the light, and a memory chip having a built-in trimmed resistor, the trimmed resistor having a resistance value that is detectable by a monitor.

Electronic device, method of controlling charging by electronic device, and method of supplying power by power supply device

An electronic device is provided. The electronic device includes a housing, a battery included within the housing, a connector electrically connected to an external power supply device including an integrated circuit (IC) and exposed to a part of the housing, and a power management unit included within the housing and electrically connected to the connector, wherein the power management unit is configured to communicate with the IC of the external power supply device, and wherein the connector is configured to receive a first current of a first current value during at least a part of the communication and to receive a second current of a second current value greater than the first current value during at least a part in which the communication is not performed.

Load Control Device for High-Efficiency Loads

A two-wire load control device (such as, a dimmer switch) for controlling the amount of power delivered from an AC power source to an electrical load (such as, a high-efficiency lighting load) includes a thyristor coupled between the source and the load, a gate coupling circuit coupled between a first main load terminal and the gate of the thyristor, and a control circuit coupled to a control input of the gate coupling circuit. The control circuit generates a drive voltage for causing the gate coupling circuit to conduct a gate current to thus render the thyristor conductive at a firing time during a half cycle of the AC power source, and to allow the gate coupling circuit to conduct the gate current at any time from the firing time through approximately the remainder of the half cycle, where the gate coupling circuit conducts approximately no net average current to render and maintain the thyristor conductive. 1. A dimmer switch for controlling an amount of power delivered from an AC power source to a lighting load for controlling an intensity of the lighting load , the dimmer switch comprising:a triac adapted to be electrically coupled between the AC power source and the lighting load, the triac having first and second main terminals through which current can be conducted to energize the lighting load and a gate terminal through which current can be conducted to render the triac conductive between the first and second main terminals;a gate coupling circuit arranged to conduct current through the gate terminal of the triac; anda control circuit configured to control the gate coupling circuit to conduct a pulse of current through the gate terminal of the triac at a firing time during a present half-cycle of an AC mains voltage of the AC power source to render the triac conductive, the control circuit configured to control the firing time to adjust the intensity of the lighting load, the control circuit configured to control the gate coupling circuit to allow the ...

Load Control Device for High-Efficiency Loads

A two-wire load control device (such as, a dimmer switch) for controlling the amount of power delivered from an AC power source to an electrical load (such as, a high-efficiency lighting load) includes a thyristor coupled between the source and the load, a gate coupling circuit coupled between a first main load terminal and the gate of the thyristor, and a control circuit coupled to a control input of the gate coupling circuit. The control circuit generates a drive voltage for causing the gate coupling circuit to conduct a gate current to thus render the thyristor conductive at a firing time during a half cycle of the AC power source, and to allow the gate coupling circuit to conduct the gate current at any time from the firing time through approximately the remainder of the half cycle, where the gate coupling circuit conducts approximately no net average current to render and maintain the thyristor conductive. 1. A dimmer switch for controlling an amount of power delivered from an AC power source to an lighting load for controlling an intensity of the lighting load , the dimmer switch comprising:a triac adapted to be electrically coupled between the AC power source and the lighting load, the triac having first and second main terminals through which current can be conducted to energize the lighting load and a gate terminal through which current can be conducted to render the triac conductive between the first and second main terminals;a gate coupling circuit electrically coupled to the first main terminal of the triac and arranged to conduct current through the gate terminal of the triac;a controllable switching circuit electrically coupled in series between the gate coupling circuit and the gate terminal of the triac and configured to conduct current through the gate terminal of the triac; anda control circuit configured to render the controllable switching circuit conductive and to control the gate coupling circuit to conduct a pulse of current through the gate ...

Load Control Device for High-Efficiency Loads

A two-wire load control device (such as, a dimmer switch) for controlling the amount of power delivered from an AC power source to an electrical load (such as, a high-efficiency lighting load) includes a thyristor coupled between the source and the load, a gate coupling circuit coupled between a first main load terminal and the gate of the thyristor, and a control circuit coupled to a control input of the gate coupling circuit. The control circuit generates a drive voltage for causing the gate coupling circuit to conduct a gate current to thus render the thyristor conductive at a firing time during a half cycle of the AC power source, and to allow the gate coupling circuit to conduct the gate current at any time from the firing time through approximately the remainder of the half cycle, where the gate coupling circuit conducts approximately no net average current to render and maintain the thyristor conductive. 1. A load control device for controlling power delivered from an AC power source to an electrical load , the load control device comprising:a bidirectional semiconductor switch adapted to be electrically coupled between the AC power source and the electrical load, and configured to conduct a load current to energize the electrical load, the bidirectional semiconductor switch comprises first and second switching transistors coupled in anti-series connection, the bidirectional semiconductor switch having a control input configured to receive at least one drive signal to render the bidirectional semiconductor switch conductive and non-conductive;a control circuit configured to control the bidirectional semiconductor switch to render the bidirectional semiconductor switch conductive and non-conductive, the control circuit configured to determine a zero-crossing time of a present half-cycle of the AC power source in response to a voltage developed across the bidirectional semiconductor switch; anda power supply electrically coupled to conduct a charging current ...

Load Control Device for High-Efficiency Loads

A two-wire load control device (such as, a dimmer switch) for controlling the amount of power delivered from an AC power source to an electrical load (such as, a high-efficiency lighting load) includes a thyristor coupled between the source and the load, a gate coupling circuit coupled between a first main load terminal and the gate of the thyristor, and a control circuit coupled to a control input of the gate coupling circuit. The control circuit generates a drive voltage for causing the gate coupling circuit to conduct a gate current to thus render the thyristor conductive at a firing time during a half cycle of the AC power source, and to allow the gate coupling circuit to conduct the gate current at any time from the firing time through approximately the remainder of the half cycle, where the gate coupling circuit conducts approximately no net average current to render and maintain the thyristor conductive. 1. A load control device for controlling power delivered from an AC power source to an electrical load , the load control device comprising:a thyristor adapted to be electrically coupled between the AC power source and the electrical load, the thyristor having a first main terminal and a second main terminal through which current is conducted to energize the electrical load and a gate terminal through which current is conducted to render the thyristor conductive;a gate coupling circuit electrically coupled to conduct current through the gate terminal of the thyristor;a control circuit configured to control the gate coupling circuit to conduct a pulse of current through the gate terminal of the thyristor at a firing time during a present half-cycle of the AC power source to render the thyristor conductive; anda power supply electrically coupled to conduct current through the electrical load to generate a supply voltage;wherein the control circuit is further configured to control the gate coupling circuit to allow the gate coupling circuit to conduct at least ...

Ac conversion on the solar cell level

A solar power system may comprise a back sheet that comprises an interconnect circuit coupling a plurality of cell tiles. A tiled solar cell, comprising a solar cell and encapsulating and glass layers, is inserted into the cell tiles of the back sheet. Each solar cell is individually addressable through the use of the interconnect circuit. Moreover, the interconnect circuit of the back sheet is programmable and allows for dynamic interconnect routing between solar cells.

Load Control Device for High-Efficiency Loads

A two-wire load control device (such as, a dimmer switch) for controlling the amount of power delivered from an AC power source to an electrical load (such as, a high-efficiency lighting load) includes a thyristor coupled between the source and the load, a gate coupling circuit coupled between a first main load terminal and the gate of the thyristor, and a control circuit coupled to a control input of the gate coupling circuit. The control circuit generates a drive voltage for causing the gate coupling circuit to conduct a gate current to thus render the thyristor conductive at a firing time during a half cycle of the AC power source, and to allow the gate coupling circuit to conduct the gate current at any time from the firing time through approximately the remainder of the half cycle, where the gate coupling circuit conducts approximately no net average current to render and maintain the thyristor conductive. 1. A dimmer switch for controlling an amount of power delivered from an AC power source to a lighting load for controlling an intensity of the lighting load , the dimmer switch comprising:a triac adapted to be electrically coupled between the AC power source and the lighting load, the triac having first and second main terminals through which current can be conducted to energize the lighting load and a gate terminal through which current can be conducted to render the triac conductive;a gate coupling circuit configured to receive first and second drive voltages, the gate coupling circuit comprising two MOS-gated transistors electrically coupled in anti-series connection, the MOS-gated transistors electrically coupled to conduct current through the gate terminal of the triac in response to the first and second drive voltages; anda control circuit configured to generate the first and second drive voltages for individually controlling the MOS-gated transistors of the gate coupling circuit, the control circuit configured to control the gate coupling circuit to ...

Load Control Device for High-Efficiency Loads

A two-wire load control device (such as, a dimmer switch) for controlling the amount of power delivered from an AC power source to an electrical load (such as, a high-efficiency lighting load) includes a thyristor coupled between the source and the load, a gate coupling circuit coupled between a first main load terminal and the gate of the thyristor, and a control circuit coupled to a control input of the gate coupling circuit. The control circuit generates a drive voltage for causing the gate coupling circuit to conduct a gate current to thus render the thyristor conductive at a firing time during a half cycle of the AC power source, and to allow the gate coupling circuit to conduct the gate current at any time from the firing time through approximately the remainder of the half cycle, where the gate coupling circuit conducts approximately no net average current to render and maintain the thyristor conductive. 1. A dimmer switch for controlling an amount of power delivered from an AC power source to a lighting load for controlling an intensity of the lighting load , the dimmer switch comprising:a triac adapted to be electrically coupled between the AC power source and the lighting load, the triac having first and second main terminals through which a load current can be conducted to energize the lighting load and a gate terminal through which a gate current can be conducted to render the triac conductive;a gate coupling circuit comprising two MOS-gated transistors in anti-series connection, the MOS-gate transistors electrically coupled to conduct the gate current through the gate terminal of the triac; anda control circuit configured to control the gate coupling circuit to cause the MOS-gated transistors to conduct the gate current through the gate terminal of the triac to render the triac conductive at a firing time during a present half-cycle an AC mains voltage of the AC power source, the control circuit configured to control the firing time to adjust the ...

AUTOMATICALLY RESTARTING A VOLTAGE FOLDBACK CIRCUIT

Embodiments include techniques for automatically restarting a voltage foldback circuit, the techniques include operating a circuit, and detecting a condition of the circuit. The techniques also include performing a foldback operation based at least in part on the condition of the circuit, subsequently detecting the condition of the circuit. The techniques include initiating a timer of the circuit based at least in part on the subsequent detection of the circuit, and returning the circuit to normal operation based on the timer. 1. A method of automatically restarting a voltage foldback circuit , the method comprises:operating a circuit;detecting a condition of the circuit;performing a foldback operation based at least in part on the condition of the circuit;subsequently detecting the condition of the circuit;initiating a timer of the circuit based at least in part on the subsequent detection of the circuit, wherein the timer periodically provides pulses to the circuit if the subsequent detection indicates an overload condition is not removed, wherein the timer is coupled to a current limiting circuit and an output of the comparator via a set of parallel switches, wherein an output of the timer is provided to a switch of the set of parallel switches, the switch being controlled by the timer, wherein the timer receives an output of the comparator; andreturning the circuit to normal operation based on the timer, wherein returning the circuit to the normal operation occurs while maintaining a load being coupled to the circuit.2. (canceled)3. The method of claim 1 , wherein the initiating the timer is based on the detection indicating an overcurrent condition.4. The method of claim 1 , further comprises responsive to initiating the timer claim 1 , the timer periodically sends out a pulse signal to return the circuit to normal operation.5. The method of claim 4 , further comprises responsive to each pulse being sent by the timer claim 4 , performing another detection of ...

Method of rotating a polyphase motor at less than rated speed

A polyphase AC induction motor is connected to a power supply through a soft starter having three sets of inverse parallel connected silicon controlled rectifiers with each set corresponding to one particular phase. Low speed starting and operation of the motor can be accomplished through triggering circuits controlling the phases of the triggering pulses in relation to the phases of the supply. The low motor speeds are developed by a gating sequence that generates a low frequency waveform that is less than the main supply frequency to the motor. This low frequency waveform is current and voltage controlled by the gating sequence to permit the AC motor to smoothly operate at speeds less than 100% of rated while developing net positive torque at the low controlled operating frequency.

Wireless energy transfer with variable size resonators for medical applications

A medical device-powering wireless receiver for use with a first electromagnetic resonator coupled to a power supply. The wireless receiver includes a load configured to power an implantable medical device using electrical power, and a second electromagnetic resonator adapted to be housed within the medical device and configured to be coupled to the load, wherein the second electromagnetic resonator is configured to be wirelessly coupled to the first electromagnetic resonator to provide resonant, non-radiative wireless power to the second electromagnetic resonator from the first electromagnetic resonator, the area circumscribed by the inductive element of at least one of the electromagnetic resonators can be varied to improve performance.

Battery charging circuit

Sylvania

Battery charging system

Battery gauge for a battery operated infusion pump

The present invention provides an estimate of the amount of time left on the battery by monitoring not only the voltage available from the battery, but also the amount of current flowing from the battery. It has been found that periodic sampling of the battery voltage and current drain enables accurate battery monitoring. The sampling technique alternates between sampling battery voltage and sampling current drain. An electric circuit is provided which enables the cost-effective sampling to occur. A method is then applied to the sampling signals by a microprocessor which determines the amount of time left under battery power. In a preferred embodiment, a graphic representation is provided of the amount of battery time left.

Surgical/medical irrigator with adjustable nozzle

An irrigator ( 20 ) useful for surgical and medical procedures. The irrigator includes a handpiece ( 22 ) to which a tip assembly ( 30 ) is attached. The tip assembly includes a discharge tube ( 32 ) through which irrigating fluid is discharged. A spray head ( 422 ) with spaced-apart shoulders ( 422 ) is moveably attached to the front of the discharge tube. When the spray head is in a first position, the shoulders do not interfere with the discharge of irrigation fluid. When the spray head is in a second position, the shoulders are in registration over the discharge openings; the discharged irrigation fluid is dispersed by the shoulders. A spray shield ( 181 ) is disposed over the discharge tube. The irrigation fluid defused by the spray head shoulders strikes the spray shield which further diffuses this discharge.

Surgical/medical irrigator with removable splash shield

A surgical/medical irrigator with a handpiece in which there is a pump from which irrigating fluid is discharged. The irrigating fluid is discharged from a discharge tube attached to the handpiece. Irrigating fluid is removed from the site to which it is applied through a suction tube also attached to the handpiece. A splash shield is removably attached to the ends of the discharge and suction tubes to limit fluid discharge. The splash shield is formed with a discharge chamber into which the fluid from the discharge chamber is discharged. The splash shield has a bore that leads from the discharge chamber to the suction tube through which fluid is drawn away from the discharge chamber. Seals between the discharge and suction tubes and the splash shield prevent fluid flow between the tubes and the splash shield.

Infusion pump with battery back-up

An infusion pump is powered either from an ac line, a disposable battery or a rechargeable battery. The pump automatically differentiates between disposable and rechargeable batteries, and it includes an alarm activated when the pump senses that the battery has been depleted in accordance with the kind of battery in use.

Microprocessor controlled tankless water heater system

The present invention is an apparatus for controlling a water delivery system utilizing an instant flow tankless water heater. It includes a programmable microprocessor with support circuitry to achieve control of the outlet temperature of a varying flow rate and varying inlet temperature stream. The system senses a water outlet temperature and controls AC power through an on/off mechanism to regulate power to heating elements embedded in the water stream. The capabilities of the heating elements are improved through the application of using a microprocessor to perform a proportional (P), integrating (I) and derivative (D) calculation. The calculations are used to determine the operating characteristics of the heating system and to control the heating system.

Battery gauge

The present invention provides an estimate of the amount of time left on the battery by monitoring not only the voltage available from the battery, but also the amount of current flowing from the battery. It has been found that periodic sampling of the battery voltage and current drain enables accurate battery monitoring. The sampling technique alternates between sampling battery voltage and sampling current drain. An electric circuit is provided which enables the cost-effective sampling to occur. A method is then applied to the sampling signals by a microprocessor which determines the amount of time left under battery power. In a preferred embodiment, a graphic representation is provided of the amount of battery time left.

Power supply circuit

The voltage booster type switching power supply circuit is provided with a drive circuit for controlling a switching element, a start/stop circuit for turning the drive circuit on and off according to a brightness control signal for adjusting a brightness of a light source of a liquid crystal display device, an output voltage detection circuit for detecting whether the output voltage is greater than a predetermined voltage and feeding out a result as a comparison result signal, and a soft-start circuit that does not operate when the comparison result signal is active on the rising edge of the brightness control signal, and that operates so as to increase the output voltage gradually when the comparison result signal is inactive on the rising edge of the brightness control signal.

Battery charger

A battery charger that allows insertion of a battery for charging. When the battery is inserted it mechanically engages an activation mechanism and electrically couples to an energy source incorporated with the charger. The mechanical engagement of the battery with the activation mechanism causes at least one vent in the energy source to open. The energy source generates power when the at least one activating gas infiltrates into the energy source through the at least one open vent. The power generated by the energy source is coupled to the battery for charging.

Electrical power storage apparatus

A rechargeable, electrical power storage system employing an electrical power storage medium in the form of a slurry containing active metal particles and an electrolyte solution, which system includes one or more metal-air cells, each including outer electrode apparatus including air electrode apparatus and being configured to define a liquid permeable housing; a volume of the active metal particles arranged within the housing so as to define a static bed which is saturated with the electrolyte solution; inner electrode apparatus arranged within the housing so as to be surrounded by the static bed. The system also includes apparatus for circulating an electrolyte solution through the static bed so as to dissolve discharge products that form therein as the slurry becomes electrically discharged, and apparatus for removing the dissolved discharge products from the circulating electrolyte. The electrical power storage system may be used for powering an electric vehicle. An electrical energy system includes an electric utility having electricity generation apparatus and distribution lines, and rechargeable electrical power storage apparatus which provides energy to the electric utility, when required. The rechargeable electrical power storage apparatus may optionally also be used for the regeneration of slurry for replacement of electrically discharged slurry in the electrical power storage system of an electric vehicle.

Degenerative load temperature correction for charge pumps

A regulator circuit to control the output of a charge pump circuit, to reduce the effects of operating temperature and process variations on available output current from the charge pump circuit. A predetermined fraction of the output voltage of the charge pump circuit is fed back to the input of a differential amplifier, which compares it to a reference voltage. The output of the differential amplifier feeds a voltage controlled oscillator (VCO), which in turn generates a clock signal that is used to drive the charge pump circuit. The normal temperature characteristics of this configuration cause the output of the charge pump circuit to degrade with temperature changes. The regulator circuit can be placed between the differential amplifier and the VCO to adjust the voltage driving the VCO. In one embodiment, a biasing resistor with a negative temperature coefficient can be used in the regulator circuit to offset the normal effects of temperature on the circuit. In another embodiment, multiple such resistors can be selectable with programmable logic, so that process variations during manufacture can be compensated for by selecting the resistor value that most closely provides optimal biasing.

Multicolor tunable nanophosphor and its synthesis method and transparent polymer composite including the nanophosphor

The present invention relates to a nanophosphor used as a wavelength conversion part of a solar cell, a phosphorescent contrast medium, and a light emitting part of a display device, and to a synthesis method thereof. The nanophosphor of the present invention emits strong green light by being excited by an ultraviolet ray, and has multicolor light emitting properties of controlling colors such as green, yellow green, yellow, orange and the like. The fluoride-based LiYF_4 nanophosphor co-doped with Ce^(3+) and Tb^(3+) is represented by LiY_(1-x-y)F_4:Ce^(3+)_x,Tb^(3+)_y.

Устройство на солнечных батареях

Изобретение относится к электротехнике и является устройством с питанием от солнечной батареи, которое включает в себя батарею, по меньшей мере, один фотоэлектрический элемент (который может быть частью солнечного модуля, содержащего множество фотоэлектрических элементов) и DC-восприимчивое АС устройство, такое как компактная флуоресцентная лампа. Устройство с питанием от солнечной батареи может также включать в себя первый DC-DC преобразователь, который получает первый электрический сигнал от, по меньшей мере, одного фотоэлектрического элемента и обеспечивает сигнал зарядки на батарею, и второй DC-DC преобразователь, который получает второй электрический сигнал от батареи и обеспечивает DC сигнал питания постоянного тока на DC восприимчивое АС устройство. Технический результат - повышение КПД. 2 н. и 17 з.п. ф-лы, 3 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 503 120 (13) C2 (51) МПК H02M 3/156 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010107168/07, 24.07.2008 (24) Дата начала отсчета срока действия патента: 24.07.2008 (73) Патентообладатель(и): АМЕРИКАН ПАУЭР КОНВЕРШН КОРПОРЕЙШН (US) R U Приоритет(ы): (30) Конвенционный приоритет: 27.07.2007 US 11/829,192 (72) Автор(ы): ХЕЙНЗ Ланс П. (US) (43) Дата публикации заявки: 10.09.2011 Бюл. № 25 C 2 2 5 0 3 1 2 0 R U C 2 (56) Список документов, цитированных в отчете о поиске: AZBE ЕТ ALL: "DISTRIBUTED GENERATION FROM RENEWABLE SOURCES IN AN ISOLATED DC NETWORK" RENEWABLE ENERGY, PERGAMON PRESS, OXFORD, GB, vol.31, no. 14(c.2372 (2.1.3), 2375, 2376(2.4.1, 2.4.6). ЧЕТТИ П. Проектирование ключевых источников питания. - М.: ЭНЕРГОАТОМИЗДАТ, 1990, с.202-204, рис.7.3. RU 349 U1, 16.04.1995. SU 1511804 A1, 30.09.1989. (85) Дата начала рассмотрения заявки PCT на национальной фазе: 27.02.2010 (86) Заявка PCT: US 2008/071025 (24.07.2008) (87) Публикация заявки РСТ: WO 2009/018090 (05.02.2009) Адрес для переписки: 129090, Москва, ул.Б.Спасская, 25, стр.3, ООО " ...

Transmitter and receiver sensing voltage source

The device consists of a power control part (10) for controlling power of electronic devices, battery (11) for supplying the part (10) with constant power, a power sensing part (12) for sensing electric discharge of the battery (11), a parallel to serial converter (13) for converting parallel digital signal, output signal of the power sensing part (12), into serial digital signal, a system transmitting part (15) for mixing a frequency with output signal of the part (13) and transmitting to a remote control receiving part (34), a liquid crystal displaying part (32) for displaying the received battery signal of the receiving part (34).

电源装置以及备有此电源装置的电子仪器

本发明涉及一种电源装置，其构成为备有：误差放大器，其将对应于输出电压的反馈电压与规定的参考电压之间的差分进行放大而生成误差电压；输出部，其以降低所述误差电压的方式从输入电压生成所希望的输出电压；和钳位部，其在所述电源装置的启动之后，在规定的期间中，将所述误差电压的上限值设定为比正常时要小的值，所述输入电压越低就设定越高，相反地，所述输入电压越高就设定越低。

전기집진장치

본 발명은, 베이스전압과 펄스전압을 독립해서 제어가능으로하고, 급준하고, 또한, 대출력의 펄스를 방전극(41)에 인가할 수 있도록한 전기집진장치를 제공하는 것을 목적으로한 것이며, 그 구성에 있어서, 일단부가 접지되고 타단부가 펄스트랜스(16)의 2차쪽권선을 경유해서 방전극(41)에 접속되는 콘덴서(20)를 설치한다. 이 콘덴서(20)의 접지쪽단자를 평활회로(25)를 경유해서 베이스 전원회로(30)의 정전압쪽 출력단자에 접속하는 동시에 콘덴서(20)의 방전전극쪽단자에 베이스전원회로(30)의 부전압쪽 단자를 접속한다. 그리고, 펄스트랜스(160의 1차쪽권선에 펄스전원회로(30)의 출력단자를 접속한 것을 특징으로 한것이다.

Comfination locks

The combination lock may have several dials, each coupled to a corresponding rotary element having a periphery that is circular except for a peripheral portion that must be turned to a preditermined position w.r.t. a sliding bolt to permit the lock to be opened. Each peripheral portion has a notch and the bolt has a ridge portion for each noty, with the ridge portions mating with the notches, respectively, when the noches have the predetermined position. The combination lock may have the bolt altermatively moved by dialdriven cams between an unlocked position and a locked position.

Touch control fan and method

A control circuit for an electrical appliance having an inductive load includes a signal conditioning element, a control element, a power conditioning element, a power adjustment element, and a switching element. The control circuit is sensitive to input received from a sensor which in turn is sensitive to a touch on an outside of a conductive casing of the appliance or a sharp sound. A separate touch pad is used if the appliance has a non-conductive casing. The load is typically a motor for driving a fan unit. The fan unit may be used either independently or as part of an appliance such as a humidifier, dehumidifier, heater, or air purifier.

Touch control adaptor

A device for connecting in series between a source of electric power and an appliance which, without modifying the normal power connections or other parts of the appliance, isolates the capacitance to ground characteristic of the appliance from the power supply and allows the flow of electrical power to the appliance to be regulated by a mere touch, usually by a human finger, to a surface of the appliance.

Surge current-limiting circuit

There is disclosed a surge current-limiting circuit including a current-limiting means connected in series with a load; a controlled rectifier connected in parallel with the current-limiting means; a photocoupler; and a delay circuit having a time constant, connected through the photocoupler with the gate of the controlled rectifier.

Microcomputer-controlled ac power switch controller and dc power supply method and apparatus

An AC controller which provides programmable switching of AC power flow, together with producing a source of DC power for operating the AC controller. The AC controller is connected in series with only one side of the AC power source and the AC load. The AC controller utilizes a thyristor for AC power control switching. During the operation, the AC controller steals a small portion of each half-cycle of the AC power to provide DC power to the AC controller. The AC controller enables the flow of AC current by providing a gate current pulse at any predetermined time during the half cycle. Once the thyristor is ON, the AC current flows through the thyristor until the AC cycle is at or near zero. To provide an OFF state, the AC controller does not provide a gate current pulse. The AC controller uses an microcontroller for the programmable capability. The AC controller can be programmed to provide a flashing light function, a time delay off mode, an automatic fade mode, a dimming function, a burglar deterrent function, and a time delay dim function. With a three-position switch which can replace existing types of wall switches, three modes of operation are achieved: ON, OFF, and MODE. The mode position initiates operation of the special function of the controller.

Non-contact power transmission device, non-contact signal transmission device, separated type mechanical device using the same, and control method thereof

A non-contact power transmission apparatus, a non-contact signal transmitter (which will be referred to as the "power coupler" and the "signal coupler", respectively) and a separation type machine using the couplers. The power coupler is a separation type transformer the primary and secondary sides of which are fixed to a fixed portion and to a rotating portion of a machine, respectively, and its output is independent of the revolution of the rotating portion. The signal coupler comprises a transmission side portion having a unit for converting electric signals to optical signals having symmetry of rotation with respect to the axis of rotation of the rotating portion, and a reception side portion having a photoelectric unit for converting the optical signals to the electric signals. Accordingly, the rotating portion can receive the supply of power from the fixed portion while rotating, and can communicate with the fixed portion. The rotating portion can be easily fitted to the fixed portion and can be separated and moved. <IMAGE>

Система генерации импульсов, предназначенная для электрофильтра

Изобретение относится к системе генерации импульсов для генерирования высоковольтных импульсов, обеспечивающих энергией электростатический осадитель (10). Система содержит: первый источник (1) питания и второй источник (2) питания, обеспечивающий предварительную подачу на электростатический осадитель (10) заданного постоянного напряжения; накопительный конденсатор (7) с включенным с ним последовательно индуктором и ключ (5), параллельно которому включено антипараллельное выпрямительное устройство (6). При этом система по изобретению выполнена с возможностью подключения к указанному электростатическому осадителю. Изобретение направлено на повышение эффективности описанной системы генерации импульсов по сравнению с известными аналогичными системами и на улучшение защиты компонентов системы в случае искровых разрядов в электростатическом осадителе (10). Данные задачи решены использованием в системе ключа (5), выполненного с возможностью размыкания, и введением в систему ограничивающей цепи (11-13). 10 з.п. ф-лы, 7 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 385 189 (13) C2 (51) МПК B03C 3/68 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21), (22) Заявка: 2007115102/12, 25.10.2005 (24) Дата начала отсчета срока действия патента: 25.10.2005 (72) Автор(ы): РЕЙЕС Виктор (DK), ТОРНИНГ Клаус (DK) (43) Дата публикации заявки: 10.12.2008 2 3 8 5 1 8 9 (45) Опубликовано: 27.03.2010 Бюл. № 9 (56) Список документов, цитированных в отчете о поиске: SU 1477477 А1, 07.05.1989. US 4713093 А, 15.12.1987. US 4600411 А, 15.07.1986. US 4592763 А, 03.06.1986. 2 3 8 5 1 8 9 R U (86) Заявка PCT: DK 2005/000686 (25.10.2005) C 2 C 2 (85) Дата перевода заявки PCT на национальную фазу: 28.05.2007 (87) Публикация PCT: WO 2006/045311 (04.05.2006) Адрес для переписки: 191186, Санкт-Петербург, а/я 230, "АРС-ПАТЕНТ", пат.пов. М.В.Хмаре, рег. № 771 (54) СИСТЕМА ГЕНЕРАЦИИ ИМПУЛЬСОВ, ПРЕДНАЗНАЧЕННАЯ ДЛЯ ЭЛЕКТРОФИЛЬТРА (57) ...

高效率及可离峰储能的中继电瓶供电系统

一种可优先使用离峰电力蓄储电能的中继电瓶供电系统，其组成包括：由交流单相或多相电源经整流器构成的充电装置对中继电瓶充电，并以中继电瓶为直流电源，直接以直流电能或经变流器转为交流电能对外供电。其特征为具有离峰时间优先电路，即根据电瓶饱和状况自动选择优先利用夜间离峰电力对中继电瓶充电。

誘導充電装置及び電子装置

(57)【要約】 電子装置のバッテリ手段が充電装置に誘導的に結合されたとき、上記電子装置のバッテリ手段を充電する誘導充電装置において、上記充電装置は、上記電子装置を受容する充電レセプタクルを有する第１のケーシングと、上記第１のケーシングに設けられた１次コイルに接続された交流電源とを含み、上記電子装置は、上記バッテリ手段に電気的に結合された２次コイルが設けられた第２のケーシングを含み、上記１次コイル及び上記２次コイルは、上記電子装置が上記レセプタクルに置かれたときに、上記１次コイルから上記２次コイルにエネルギーを誘導的に伝達するため磁気的に結合されている誘導充電装置が開示されている。電話機が充電されていないが、使用されているときに、上記レセプタクルに入る可能性のある金属物が加熱されることを防止するため、上記誘導充電装置は、上記電子装置が上記充電レセプタクルから外れているとき、上記交流電源から上記１次コイルに伝達されるべき電力を阻止する電気的な電力阻止手段を更に含み、上記電子装置は、伝達されるべき電力の阻止を解除する阻止解除手段を更に含み、上記電力阻止手段と上記電力阻止解除手段が組み合わされる。これにより、このような望ましくない加熱を防止する安価かつ信頼性の高い手段が得られる。

Single phase to three phase power converter for motor loads

An apparatus for converting single phase input power to three phase output power supplied to a motor includes a pair of input lines, and a pair of DC bus lines, a pair of capacitors, a pair of diodes, and a pair of controlled switching devices which are each connected between the DC bus lines. One of the input lines is connected to the node between the capacitors and the other input line is connected to the node between the diodes. Two output lines are connected to the input line and a third output line is connected to the node between the two switching devices, with the three output lines being connected to a motor to supply three phase power to the motor. The switching devices are switched in a pulse width modulated manner to provide a voltage between the third output line and the other two output lines which provides the three phase power. During motor startup, at least one startup capacitor is switched in between one or both of the input lines and the output lines to provide startup torque for the motor. This capacitor is switched out after the motor has been started. A capacitor may also be switched in between the two input lines during startup to reduce the in-rush current on the input lines. Conversion of single phase to three phase power is obtained with only two active switching devices and a simple control strategy.

Soft switching boost and buck regulators

A switching regulator for achieving soft switching comprises a pilot switch in series with a diode, and a pilot inductor connected from the junction between the pilot switch and the diode to a tap on the main inductor. A bidirectional circuit operating as a buck or a boost regulator can be achieved by replacing all of the diodes with active switches and selectively activating certain of the switches.

Inverter controller

An integrated circuit inverter controller that includes at least one input pin that is configured to receive two or more input signals. The input pin may be multiplexed so that the appropriate input signal is directed to appropriate circuitry within the controller to support two or more functions of the controller. Alternatively, the input signals may be present in differing time periods so that a single pin can support two or more functions. Multifunctional or multitasked pins reduce the overall pin count of the inverter controller.

Enable Circuit with Built-In Thermal Turnoff

이네이블 회로는 열 셔트다운 능력을 집적화한다. 상기 이네이블 회로는, on/off 신호가 예정 선택된 전압을 초과하는 입력에서 인가될 경우, 바람직한 바이어스 전류를 공급할 수 있도록 온도 비감응성 드레스홀드 검지기 네트워크를 사용한다. 드레스홀드 검지기 네트워크의 입력단과 접지와의 사이에 접속되어 있는 열감응성 회로는, on/off 신호가 예정 선택된 전압과 동일한 경우 및 이네이블 회로의 온도가 예정 선택된 최대 온도 이하인 경우, 오프 상태를 유지한다. 그러나, 이네이블 회로의 온도가 예정 선택된 최대 온도에 도달한 경우에, 열감응성 회로는 턴온하고, 입력 신호를 예정 선택된 전압 이하의 드레스홀드 네트워크 검지기 네트워크로 클램프한다. The enable circuit integrates the thermal shut down capability. The enable circuit uses a temperature-insensitive dress hold detector network to provide the desired bias current when an on / off signal is applied at an input that exceeds a predetermined selected voltage. The thermosensitive circuit connected between the input terminal of the dress hold detector network and ground maintains an off state when the on / off signal is equal to the preselected voltage and when the temperature of the enable circuit is below the preselected maximum temperature. . However, when the temperature of the enable circuit has reached the preselected maximum temperature, the thermosensitive circuit turns on and clamps the input signal to a dress network network detector network below the preselected voltage.

Optical pulse receiving device

The electrical signal produced by a photodiode (PD) upon receipt of an optical pulse is amplified by an opertional amplifier (OP1) and applied directly to one input terminal (+) of a comparison circuit (COM), and also to a circuit which provides a continuing signal at the other comparison circuit input terminal (-) equal in amplitude to a derived ratio, sq. half, of the amplifier output signal. The comparison circuit provides a standard high output signal if the first input signal exceeds the second, and a standard low output signal if the second exceeds the first. In multi-step transmission of data, pulse distortion produced in receiving circuit is avoided in final output.

두 개의 배터리를 입출력으로 하는 직류 컨버터의돌입전류 방지회로

본 발명은 두 개의 배터리를 입출력으로 하는 양방향 DC/DC 컨버터에서 돌입전류를 방지하기 위한 회로로서, 그 구성은 전압원으로부터 전원을 인가받는 입력단; 상기 입력단으로 인가된 입력전압의 스위칭동작을 위한 스위칭부; 상기 스위칭부를 통한 신호의 필터링을 위한 필터부; 상기 필터부를 통해 필터링된 인가된 전압을 출력하는 출력단; 상기 출력단에서의 출력전압과 기준전압의 차에 의해 PWM 신호를 출력하기 위한 것으로서, 기준전압을 발생하는 기준전압발생기와, 상기 기준전압발생기로부터 입력된 기준전압과 상기 출력단에서의 출력전압을 비교하여 오차를 출력하는 오차증폭기와, 상기 오차증폭기로부터 신호를 입력받아 PWM 기준클럭신호를 발생시키는 PWM 기준클럭 발생기를 포함하는 PWM 신호발생부; 상기 PWM 신호발생부의 오차증폭기 신호를 입력받아 입,출력단의 전압과 비교하여, 상기 스위칭부의 구동을 위한 스위치구동 동작(on)신호를 출력하는 스위치구동 신호발생부; 및 상기 스위치구동 신호발생부로부터 스위치구동 동작신호를 입력받아, 상기 PWM 신호발생부로부터 발생된 PWM 신호를 스위칭부에 전달하여 스위칭부의 동작이 이루어지도록 하는 온/오프 회로부로 구성된다.

The control device of fuser for generating the source synchronous signal and detecting the voltage of source

전원동기신호 생성 및 전원전압 검출을 위한 정착기 제어장치에 관하여 개시한다. 본 발명에 따른 전원동기신호 생성 및 전원전압 검출을 위한 정착기 제어장치는 정착기 제어장치에 있어서, 전원전압과 동기되는 전원동기신호를 생성하여 출력하는 전원동기신호 발생회로부, 전원전압의 레벨을 센싱하여 전원전압의 크기를 검출하여 출력하는 전원전압 검출회로부, 및 전원동기신호 및 검출된 전원전압의 크기에 기초하여 위상 제어방식에 의해 정착기에 공급되는 전원을 제어하기 위한 제어부를 포함하는 것을 특징으로 한다. 본 발명에 의하면 전원전압의 영점 교차지점에서, 전원전압의 크기 및 주파수와 무관한 전원동기신호를 생성할 수 있다. 따라서, 이러한 전원동기신호에 기초하여 위상제어나 순시적인 전력제어가 가능하므로, 시스템의 역률 및 플릭커 특성을 개선할 수 있는 장점이 있다. A fuser controller for generating a power synchronous signal and detecting a power voltage is disclosed. In the fuser control device for generating a power synchronous signal and detecting a power voltage according to the present invention, a power synchronous signal generation circuit unit for generating and outputting a power synchronous signal in synchronization with the power voltage, sensing the level of the power voltage And a control unit for controlling the power supplied to the fuser by a phase control method based on the power supply synchronous signal and the detected power supply voltage based on the magnitude of the power supply synchronous signal and the detected power supply voltage. . According to the present invention, it is possible to generate a power supply synchronous signal irrespective of the magnitude and frequency of the power supply voltage at the zero crossing point of the power supply voltage. Accordingly, since phase control or instantaneous power control is possible based on the power synchronization signal, there is an advantage of improving the power factor and flicker characteristics of the system.

バッテリゲージ

【課題】対コスト効果が高く、感度良くバッテリをモニタを取り込れた医療用 注入ポンプがを提供すること。注入ポンプが、補助バッテリ電力の残り時間量の 正確な見積もりをヘルスケア提供者に示すことができればさらに有利である。 【解決手段】患者に液体を注入する電気的に動力供給されるポンプ手段と、 該ポンプ手段に電力供給するバッテリと、該バッテリからの電圧および電流をモ ニタする回路手段と、該モニタする手段に応答して該バッテリの残り充電量を決 定する手段と、該残りのバッテリ充電を表示する表示手段と、を備えた注入ポン プ。 【選択図】なし

Control device for cleaning air and control method therefor

본 발명에 따른 공기 정화 제어 장치 및 방법은, 플라즈마 방전 현상을 이용하여 오존 및 음이온을 발생시켜 공기를 정화시키는 공기정화소자와; 상기 공기정화소자의 플라즈마 방전시에 소자 표면의 발열 상태를 감지하는 수광센서와; 상기 공기정화소자에 AC 고전압을 인가하는 AC 고전압 발생기와; 상기 수광센서의 신호에 따라 상기 AC 고전압 발생기에서 상기 공기정화소자에 인가하는 AC 전압의 크기를 가변시키는 마이크로 컴퓨터를 포함하여 구성됨으로써, 공기정화소자의 플라즈마 방전시에 발생되는 발열량에 따라 규제치 이하로 오존량을 적절하게 발생시켜 보다 효과적으로 오염 물질을 살균시키고 정화하여, 공기 정화 성능을 향상시킬 수 있는 효과가 있다. An apparatus and method for controlling air purification according to the present invention include: an air purification element for purifying air by generating ozone and anions using a plasma discharge phenomenon; A light receiving sensor for detecting a heating state of the surface of the device during plasma discharge of the air purifying device; An AC high voltage generator for applying an AC high voltage to the air purifying element; And a microcomputer for varying the magnitude of the AC voltage applied from the AC high voltage generator to the air purifying element in accordance with the signal of the light receiving sensor, thereby reducing the regulation value according to the amount of heat generated during plasma discharge of the air purifying element. By appropriately generating the ozone amount to sterilize and purify pollutants more effectively, there is an effect that can improve the air purification performance. 이온발생소자, 공기조화소자, 플라즈마, 오존, 오염도 센서, AC 전압, 수광센서 Ion generator, air conditioner, plasma, ozone, pollution sensor, AC voltage, light receiving sensor

Circuit for protecting over-discharge and over-voltage

The circuit disconnecting a battery when the battery voltage falls below a reference voltage to protect the battery from overvoltage supplied by the external source. The circuit comprises the lead-acid battery (10), a low-power detector (21), a low-battery signal detector (23), a battery termination detector (24), a controller (40), a power controller (25), a reference voltage converter (26), a speaker (50) and a display (60). The detectors (21,23) generate a signal to disconnect the battery when the battery voltage voltage falls below a first reference voltage, and generate a warning signal indicative of the power supply being deficient when the battery voltage falls below a second reference voltage. The power controller (25) disconnects the power supply of the battery in response to the low-power signal.

Control circuit of battery

he device comprises three rectifying circuits for rectifying an AC current into a DC current; a charging state switch circuit outputting information about the charging state switching of the battery between a high charging rate and a trickle charge rate; a charging driving circuit outputting a driving signal representing high speed charging or trickle charging in accordance with the output of the charging state switch circuit; a charging circuit performing high speed charging or trickle charging in response to the driving signal; and an auxiliary circuit controlling the battery to be charged with a regulating current during a rapid high charging rate.

벽 부착용 전압제어스위치

내용 없음

Circuit for pulse-charged electric precipitator and electric precipitator

Modular power supply system

FIELD: electrical engineering. SUBSTANCE: system has a built-in telecommunications module that provides remote control and monitoring. In addition, any of the modules of the system can be used as a portable AC power source. Modular power supply system comprises at least one module comprising a module docking unit, remote control means, a connector for connecting an alternating current source in the form of an electrical network or a generator, and a connector for connecting a direct current source made in the form of solar panels, connectors for connecting to an AC load, made in the form of a power connector and two outlets, and connectors for connecting to a DC load, made in the form of four USB or similar outputs. In this case, the connector for connecting the AC source through the switching unit of the electric power supply from the AC source is connected to the connectors for connecting to the AC load and with the AC to DC converter, and a connector for connection of a direct current source through a series-connected unit for selecting the maximum power from solar panels and the unit for detecting the voltage drop from the DC source is connected to the battery charging unit and to the first DC-DC converter to increase and stabilize the voltage. Battery charging unit through the battery management unit (BMU) is connected to a battery pack which is connected to a first DC-DC converter, and the first DC-DC converter is connected to the connectors for connection to the AC load through the inverter with the function of switching off the supply of DC electric power and with connectors for connection to a DC load through a second DC-DC converter, reducing the voltage. EFFECT: increased stability and reliability of the modular power supply system. 3 cl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 669 772 C1 (51) МПК H02J 9/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК H02J 9/00 (2006.01); H02J 9/06 ( ...

전류원을 이용한 소프트 스타트를 갖는 레귤레이터

본 발명은 전류원을 이용한 소프트 스타트를 갖는 레귤레이터에 관한 것으로, 전원단과 출력단에 사이에 직렬로 연결된 제1 및 제2 파워 스위치를 포함하는 파워 스위치부; 상기 출력단과 접지 사이에 연결된 부하 커패시터; 상기 출력단의 전압을 검출하는 전압 검출부; 상기 전압 검출부에 의한 검출전압과 기설정된 기준전압을 비교하여, 이 비교결과에 따라 서로 다른 위상을 갖는 제1 및 제2 스위칭 신호를 출력하는 비교부; 상기 전원단에 연결되어, 기설정된 정전류를 생성하는 전류원부; 상기 비교부의 제1 스위칭 신호에 따라 상기 제1 파워 스위치의 제어단과 상기 전류원부와의 접속을 스위칭하고, 상기 비교부의 제2 스위칭 신호에 따라 상기 제1 파워 스위치의 제어단과 접지와의 접속을 스위칭하는 전류 조절부; 및 상기 전압 검출부에 의한 검출전압과 기설정된 기준전압과의 에러 전압을 증폭하여, 이 증폭된 에러 전압을 상기 제2 파워 스위치에 출력하는 에러 증폭부를 포함한다. 레귤레이터, 소프트 스타트, 전류원, 파워스위치, 부하 커패시터, 충전

Device for generating internal power supply voltage and method thereof

A device for generating an internal power supply voltage and a method thereof are provided to prevent a starting problem by using the internal power supply voltage as an operation voltage of a reference voltage generation part. A starting voltage generation part(40) generates a starting voltage by using an external power supply voltage. A reference voltage generation part(41) generates a reference voltage by using the starting voltage. An internal power supply voltage generation part(42) generates an internal power supply voltage by using the external power supply voltage in response to the reference voltage. The starting voltage generation part is turned off by the reference voltage generated by the reference voltage generation part.

니켈카드뮴/니켈수소합금 배터리의 급속 충전을 위한-δv 검출 회로

이 발명은 니켈카드뮴/니켈수소합금(NiCd/NiMH) 베터리(Battrey)의 급속 충전(Fast Charging) 시스템을 위한 -△V 검출 회로(Detection Circuit)에 관한 것으로서, 고전류로 빠른 시간내에 배터리를 충전하면서, 배터리의 전압을 센싱, -△V를 검출하므로써, 배터리의 과충전을 막고 배터리를 안전하게 급속 충전할 수 있게 하는 회로로써, 니켈카드뮴/니켈수소합금 배터리의 급속 충전을 위한 시스템에 적용된다.

The circuit for reference voltage generating

본 발명은 반도체 장치의 기준전압 발생회로에 관한 것으로, 특히 외부전원전압을 입력하여 전압강하된 기준전압을 기준전압 출력단자에 발생하는 분배수단, 상기 기준전압 출력단자와 접지사이에 연결되고, 상기 분배수단에서 상기 기준전압이 전압강하된 클램핑 제어전압이 게이트에 인가되어 상기 기준전압을 소정 전압레벨로 클램핑하기 위한 피모스 트랜지스터, 상기 기준전압과 상기 클램핑 제어전압에 응답하여 상기 기준전압의 레벨변동을 보상하는 방향으로 상기 피모스 트랜지스터의 기판전압을 조정하기 위한 보상수단을 구비하는 것을 특징으로 한다. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reference voltage generating circuit of a semiconductor device. In particular, the present invention relates to distribution means for generating a reference voltage output terminal having a reduced voltage by inputting an external power supply voltage, connected between the reference voltage output terminal and ground. A PMOS transistor for clamping the reference voltage to a predetermined voltage level by applying a clamping control voltage having the reference voltage dropped to a gate by a distribution means, and a level change of the reference voltage in response to the reference voltage and the clamping control voltage. Compensation means for adjusting the substrate voltage of the PMOS transistor in a direction to compensate for. 따라서, 본 발명에서는 기준전압을 일정하게 유지하기 위하여 공정변수의 변화에 의한 기준전압의 보상할 수 있다. Therefore, in the present invention, the reference voltage can be compensated for by the change of the process variable in order to keep the reference voltage constant.

Electric circuit for pulse energized electrostatic precipitator and pulse energized electrostatic precipitator using this circuit

静电滤尘器电路具有供有DC电压的输入端，与过滤电容器相连的输出端，接在地电位及输入端之间的储能电容器，及一电极接地电位的恢复电容器。还包括电流通路开关单元，它有公共端及与公共端相连的第一和第二开关端，公共端与储能电容器非接地电极相连。还包括电感器及二极管的串联电路的第一、第二和第三电流通路，分别使第一开关端与输出端相连，使输出端与恢复电容器非接地电极相连，使恢复电容非接地电极与第二开关端相连。

Solar power supply

본 발명은 태양전지 전원장치에 관한 것으로서, 특히 태양에너지를 전기에너지로 변환하여 직류전압을 출력하는 태양전지; 상기 태양전지의 직류전압을 입력하여 소정의 직류전압으로 변환하여 출력하는 초퍼회로; 상기 초퍼회로의 직류전압을 충전하는 배터리; 및 상기 태양전지의 출력전압과 출력전류를 입력하여 상기 태양전지의 최대 전력점을 검출하고 이 검출신호에 응답하여 상기 태양전지의 출력전류가 추종하도록 하여 상기 초퍼회로의 직류전압이 항상 일정하게 유지되도록 상기 초퍼회로를 제어하는 펄스폭 제어기를 구비한 것을 특징으로 한다. 따라서 본 발명에서는 간단한 회로구성으로 태양광의 세기나 온도에 관계없이 항상 최대 전력점을 추종하여 항상 일정한 전원전압을 유지할 수 있다.

A band-gap voltage reference circuit having a high power supply voltage rejection ratio (PSRR) and a curve correction

Portable Auxiliary Battery Apparatus and Energy Conversion Method for Electric Vehicles using Solar Power and Commercial Power

본 발명에서는 전기자동차용 휴대용 보조 배터리 장치에 있어서, 전기자동차용 보조 배터리(400); 상기 전기자동차용 보조 배터리(400)에 전력을 충전 및 방전할 수 있는 전기자동차용 보조 배터리 충전 및 방전회로(300); 상기 전기자동차용 보조 배터리 충전 및 방전회로(300)와 접속되는 통합 접속단자(600); 상기 통합 접속단자(600)의 일측(一側)에 배치된 태양전지 모듈의 제1 접속 단자(501); 상기 태양전지 모듈의 제1 접속 단자(501)와 연결된 태양전지 모듈(500); 상기 통합 접속단자(600)의 타측(他側)에 배치된 상용전원의 접속 단자(101); 상기 전기자동차용 보조 배터리 충전 및 방전회로(300)의 구성은 제1 컨버터의 제1 스위치(301), 제1 컨버터의 제2 스위치(302), 제1 컨버터의 제3 스위치(303) 및 제1 컨버터의 제4 스위치(304)에 의해서 H-브리지(Bridge)를 형성하며; 상기 제1 컨버터의 제1 스위치(301) 및 제1 컨버터의 제2 스위치(302)의 접속점과 제1 컨버터의 제3 스위치(303) 및 제1 컨버터의 제4 스위치(304)의 접속점 사이에는 제1 결합 인덕터의 제1 인덕터(311)가 배치되며; 상기 제1 결합 인덕터의 제2 인덕터(312)의 일단(一端)은 상기 제4 스위치(304)의 드레인(Drain) 단자와 연결되며, 제1 결합 인덕터의 제2 인덕터(312)의 타단(他端)은 전기자동차용 보조 배터리(400)의 양(+) 단자와 연결되는 것을 특징으로 하는 전기자동차용 휴대용 보조 배터리 장치를 제안한다.

Electric vehicle charging status display system

Battery charging apparatus and methods

An apparatus and method for recharging a battery in one vehicle from the electrical system of another vehicle, and for determining when that battery has been sufficiently recharged. In one aspect of the invention there is provided circuit means, adapted to be respectively coupled to both the battery and the electrical system of the two vehicles. The circuit means include an array of light emitting diodes, the number and sequence of illumination of the diodes in the array being indicative of the extent to which the battery has been recharged.

Apparatus and method for protecting battery cell from overcharging

본 발명의 과충전으로부터 하나이상의 전지셀을 보호하는 방법 및 장치는 하나이상의 MOSFET 스위치 및 퓨즈 또는 회로 브레이커와 같은 별도의 페일-세이프 (fail-safe) 부재의 결합을 이용한다. 하나이상의 MOSFET 스위치의 불량이 발생하였는지의 여부를 판단하기 위하여 상기 하나이상의 전지셀을 가로지르는 퍼텐셜이 모니터되며, 그러한 불량의 판단에 응답하여, 퓨즈와 같은 별도의 부재가 회로를 개방시켜 상기 적어도 하나이상의 전지셀을 충전회로로부터 단로시킨다.

Water supply

Wireless power supply

Multi-Charging System

본 발명의 다중 충전 시스템은 복수개의 보조배터리를 전용 충전장치에 의하여 동시에 충전하고, 또한 전자장치의 충전 접속부에 연결되는 전자장치 접속 커넥터에 의하여 보조배터리를 전자장치에 접속시켜 전자장치를 충전시키는 것이다. 따라서, 본 발명의 다중 충전 시스템은 병원, 주점 및 그 외 공공장소에 비치하여 자신의 전자장치의 충전이 필요한 사용자가 보조배터리에 의하여 자신의 전자장치의 배터리를 충전할 수 있게 할 때, 사용자가 보조배터리를 편리하게 사용할 수 있을 뿐만 아니라 사용후 반납시에 보조배터리의 충전도 용이하게 이루어지며, 또한 전용 충전장치를 가지지 않은 사용자는 보조배터리를 충전할 수 없기 때문에 사용자가 보조배터리를 훔치는 것을 방지할 수 있다.

Battery pack

1. 청구범위에 기개된 발명이 속한 기술분야 본 발명은 전기기기로서 떼어냈을 때에 전지가 단락하는 것을 방지할 수가 있는 팩(pack)전지에 관한 것이다. 2. 발명이 해결하려고 하는 기술적 과제 본 발명은 팩전지와 전기기기와의 연결구조를 간소화해서 전기기기에는 간단하고 또한 용이하게 붙이고 떼는것이 가능하고 더구나 장기간에 걸쳐 정확한 동작이 보장되어서 전지를 대전류로 충방전해서 고장을 적게한다. 3. 발명의 해결방법의 요지 본 발명은 전지(2)와 직렬로 반도체스위칭소자(1)을 접속하고 있다. 반도체스위칭소자(1)을 거쳐서 전지(2)의 전극을 전극단자(3)에 접속하고 있다. 반도체스위칭소자(1)은 제어입력단자에 팩전지를 전기기기에 설치한 것을 검출하는 제어회로(4)를 접속하고 있다. 팩전지를 전기기기에 설치하면 제어회로(4)는 반도체스위칭소자(1)을 ON의 상태로 하고 전지(2)로부터 전기기기에 전력을 공급하고 팩전지를 전기기기로부터 떼어내면 반도체스위칭소자(1)은 OFF로 전환된다. 4. 발명의 중요한 용도 본 발명의 팩전지는 전기기기에 장착하는 부분에 스위치로부터 강한 반작용을 받는일이 없고 또 반도체스위칭소자로서 확실히 대전류의 충방전을 제어해서 전지의 단락을 확실히 방지할 수가 있는 특징을 갖는다.

Intelligent power supply for step-by-step loading

FIELD: power supply systems. SUBSTANCE: power supply system has power distribution circuit, power conversion circuit, power input control circuit, power utilization circuit, and power utilization control circuit. Power distribution circuit is limited to certain degree in power transmission to power conversion circuit. Power input control circuit initiates starting of power conversion circuit and controls it. Power utilization circuit and power utilization control circuit incorporate first storage capacitor, first load, and second capacitor. Voltage comparator functions to control voltage across second capacitor to determine moment of its full charging. Logic circuit receives signals from voltage comparator and status logic to set switch in OFF-position when second capacitor is fully charged. Switch closure causes connection of second load in parallel with first one. EFFECT: provision for sequential loading of different circuit components with minimal time delay. 10 cl, 3 dwg Дб Ас ПЧ с» (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВЦ ”” 2 179 777 (51) МПК” (13) С2 Н 02 4 3/14 (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 98115773/09, 09.01.1997 (24) Дата начала действия патента: 09.01.1997 (30) Приоритет: 23.01.1996 Ц$ 08/590,330 (43) Дата публикации заявки: 20.06.2000 (46) Дата публикации: 20.02.2002 (56) Ссылки: ОЕ 3346773 АЛ, 04.02.1985. $Ц 991574 А, 23.01.1983. $Ц 1757014 АЛ, 23.08.1992. 0$ 5119014 А, 15.03.1992. (85) Дата перевода заявки РСТ на национальную фазу: 24.08.1998 (86) Заявка РСТ: 0$ 97/00322 (09.01.1997) (87) Публикация РСТ: М/О 97/27658 (31.07.1997) (98) Адрес для переписки: 129010, Москва, ул. Большая Спасская 25, стр.3, ООО "Юридическая фирма Городисский и Партнеры", Кузнецову Ю.Д. (71) Заявитель: МАЙКРО МОУШН, ИНК. (1$) (72) Изобретатель: ЭКЛУНД Барри (ЦЗ), ХЭЙЗ Пол ($), СЭМСОН Эллан (И$) (73) Патентообладатель: МАЙКРО МОУШН, ИНК. (13) (74) Патентный поверенный: Кузнецов Юрий Дмитриевич (54) ...

DC-DC Converter

제 1 MOS 트랜지스터(11)와 제 2 MOS 트랜지스터(12)를 서로 반전 동작시켜 직류 변환을 하는 비절연형의 DC-DC 컨버터에 있어서, 제 1 MOS 트랜지스터(11)의 온 듀티(on duty) 시간을 전원(4) 투입 당초는 짧게 하고, 서서히 길게 하는 소프트 스타트 제어 기간 중에는 제 2 MOS 트랜지스터(12)를 오프한다. In a non-isolated DC-DC converter in which DC conversion is performed by inverting the first MOS transistor 11 and the second MOS transistor 12 with each other, the on duty time of the first MOS transistor 11 is reduced. The second MOS transistor 12 is turned off during the soft start control period which is shortened at the beginning of the power supply 4 and gradually lengthened.

Inrush current prevention circuit for dc-dc converter

一种用于DC－DC变换器的冲击电流防护电路，包括通过被导通和切断转换输入电压和输出已转换电压的开关元件。滤波器滤波通过开关元件转换的输出电压，和输出已滤波的电压作为输出电压。参考电压发生器产生参考电压。误差放大器比较参考电压和输出电压并且输出误差信号。脉冲宽度调制(PWM)信号发生器生成PWM信号以根据误差信号导通和断开开关元件。开关电路将PWM信号发射到开关元件或从开关元件隔离。电子控制单元(ECU)控制开关电路。由此构造的本发明在电源输入之后或者DC－DC变换器的重激活期间防止了冲击电流。

Battery charging circuit and power supply circuit

Inverter drive circuit for motor

Very low power analog compensation circuit

本发明涉及一种补偿电路，用于对集成电路中的PVT变化提供补偿。通过使用低电压参考电流源，所述补偿电路从片上参考低电压源(V DD )直接生成在PVT变化中恒定的参考电流(I ref )，基于电流传送器的感测电路从跨过单个二极管接法的晶体管(M10)而施加的低电压源(V DDE -V DD )生成随PVT变化可变的检测电流(I z )，低电压源(V DDE -V DD )与两个参考低电压源之间的电压差相对应。因此，在输出多个数字比特的电流模式模数转换器内对两路电流(I ref 、I z )进行比较。随后，这些数字比特可以用于补偿I/O缓冲电路中的PVT变化。

REFERENCE POTENTIAL FREE DC DIFFERENCE AMPLIFIER

Signal generating device and method for producing coagulation electrosurgical current

A signal generating device and method for producing an RF output signal regulated in power and of decaying amplitude suitable for use in an electrosurgical generator for surgical coagulation purposes. The device includes a circuit tuned to a predetermined radio frequency suitable to prevent nerve stimulation and the tuned circuit has connected therewith an unregulated power supply with current through the tuned circuit being controlled by means of a solid state switching system. The tuned circuit includes an inductor initially charged to a predetermined energy level. The switching system is automatically controlled so that the switching system is repeatedly urged to the closed position at predetermined time intervals and remains in this position until the current through the tuned circuit reaches a predetermined level at which time the switching system is caused to open and the tuned circuit thereafter rings to produce a regulated output signal of decaying amplitude, this output being taken from the tuned circuit across a transformer and is well suited for surgical coagulation purposes wherein the electrical current passes from an electrode to body tissue in the form of an arc with power dissipation being far greater in the tissue than in the arc for best operation.

Transformer coupled power transmitting and isolated switching circuit

A transformer coupled power transmitting and isolated switching circuit is disclosed for use in an electrosurgical apparatus to transmit power from a power generator to a utilization instrument for enabling electrosurgery and to transmit mode information from the utilization instrument to the power generator for enabling control of the operational mode of the generator. The electrosurgical power generator is coupled to the utilization instrument through an isolating transformer. The isolating transformer is loaded in a preselected manner under the control of a logic circuit with the load on the isolating transformer then being sensed and the sensed loading information utilized to control the mode of operation of the power generator to assure that power generator operates in the desired mode for the electrosurgery function then required.

Control circuit for electrosurgical units

A control circuit for electrosurgical units which controls power levels to patient electrode in response to load conditions thereof. A saturable reactor is connected in series between the output of the electrosurgical unit and the patient electrodes. The saturable reactor is biased by a control coil activated by a rectified current corresponding to the alternating current flowing between the patient electrodes which is an indication of the area of contact between the patient and one of the electrodes.

Electrosurgical system providing a fulguration current

An electrosurgical system, having a solid state generator for providing a cut mode electrosurgical current waveform of RF electric energy having a first voltage amplitude to an active electrode terminal, is adapted by the addition of an apparatus for alternatively providing a fulguration mode current waveform having a second higher voltage amplitude from the generator to the active electrode terminal. A fulguration adaptor including a transformer for enabling the generator to provide a fulguration mode waveform having said second higher voltage amplitude; switching apparatus connected to the transformer for selectively connecting the transformer to the generator for providing said fulguration mode waveform, for disconnecting the transformer from the generator, and for switching off the current from the generator when operated to disconnect the transformer; and a delay circuit connected to the switching apparatus for delaying said disconnection of the transformer until after the current from the generator has been switched off.

System for monitoring integrity of a patient return circuit

A monitor for a patient return circuit of a radiofrequency electrosurgical device in which an interrogation or measurement circuit is powered by a photovoltaic cell. Characteristics of the photovoltaic cell can limit the interrogation or measurement current to a value considered to be safe to a patient.

Power supply with arcing control and automatic overload protection

A power supply with automatic arcing control and overload protection includes an electronic switch in an oscillator circuit with a primary winding of a step-up transformer. A high voltage, secondary winding of the transformer is loosely magnetically coupled to the primary winding. The frequency of oscillation of the oscillator circuit decreases as a load impedance across the secondary winding of the transformer decreases. In the case of arcing or shorting of an output circuit of the power supply the frequency of oscillation decreases below a pass band of the output circuit, thereby reducing the output current of the power supply.

Electrical power control apparatus and methods

Electrosurgery apparatus includes an r.f. power amplifier with an output to a patient electrode. The amplifier is controlled by the voltage of input signals from a control unit which receives a sample of the voltage and current of the output signal. The voltage and current signals are supplied to A/D converters to provide two digital signals that are used to address a look-up table in an EPROM and provide a digital output representative of impedance. A switch is set by the user to the desired mode/power curve and this provides a digital signal which together with the impedance signal is used to address a second look-up table in an EPROM which contains digital representations of the required output voltage of the amplifier to produce the desired power level. An adder compares the required voltage with a feedback of the actual voltage to produce an error signal that is supplied to the amplifier to control its output.

Load response control and method

A regulator is responsive to an input signal proportional to the system supply voltage for adjusting the current flowing in the field windings of an electrical alternator which controls the output power thereof. The primary regulation loop of the regulator generates a pulse train having a duty cycle inversely proportional to the amplitude of the input signal while an oscillator provides a sawtooth signal at a predetermined frequency which controls the response frequency of the regulator. The regulator limits the rate of increase in the duty cycle of pulse train upon detecting a decrease in the system supply voltage by converting the duty cycle of the pulse train to a charging signal for developing a voltage across a capacitor proportional to the duty cycle of the pulse train. The voltage across the capacitor is compared to the sawtooth signal and triggers a latch which disables the output signal of the regulator as the duty cycle lengthens in response to the decrease in the system supply voltage. The voltage across the capacitor is increased each oscillator cycle until the duty cycle reaches the value required to support the output power of the alternator.

Electrosurgical generator adaptors

Adaptors are provided for use with electrosurgical bipolar instruments and standard commercially available electrosurgical generators that reduce coagulum buildup and sticking on electrosurgical instruments. A first type of adaptor converts a high voltage, high crest factor output voltage waveform typical of conventional electrosurgical generators to a more desirable lower voltage, lower crest factor regime. A second type of adaptor limits the peak open-circuit voltage supplied by a conventional electrosurgical generator to an electrosurgical instrument.

Local in-device memory feature for electrically powered medical equipment

A non-volatile memory disposed within electrically powered medical equipment is described. The non-volatile memory may be preprogrammed to store utilization limits and parametric data for the equipment. An external control module may be programmed to store the utilization history for the equipment in the non-volatile memory on an on-going basis. The control module compares the utilization limits and utilization history during each use, and disables the equipment if a utilization limit is exceeded. The control module may also use the parametric data stored in the non-volatile memory to regulate the power supplied to the equipment.

Methods and apparatus for providing a sufficiently stable power to a load in an energy transfer system

Methods and apparatus for providing a sufficiently stable power to a load in an energy transfer system that transfers energy from one side of a physical boundary to another side of the boundary. In one example, a power supply and a primary winding are located on a first side of a physical boundary (e.g., external to a body), and a secondary winding and the load are located on a second side of the physical boundary (e.g., internal to the body). A primary voltage across the primary winding is regulated so as to provide a sufficiently stable output power to the load notwithstanding changes in the load and/or changes in a relative position of the primary winding and the secondary winding. One aspect of the invention relates to energy transfer methods and apparatus for use in connection with the human body. In particular, one example of the invention includes a transcutaneous energy transfer (TET) system for transferring power from a power supply external to the body to a device implanted in the body.

Photocoupler output signal receiving circuit

Pulse shaper for protection of thyristor of static precipitator pulser

A spark-over detector for an electrostatic precipitator has a current sensor (2) which provides a signal (a) which is differentiated twice to produce a signal (c). If the level of the signal (c) is above a predetermined level then a level-detecting circuit (7) passes a signal (d) to an AND-gate (8). A second level detecting circuit (9) receives the signal (a) and if this signal is above a predetermined level passes the signal (e) to a timing circuit (10) which provides a signal (f) from a first preset time after having received the signal (e) until a second preset time after the signal (e) has ceased. Thus, if a spark over starts to occur signals (d) and (f) occur simultaneously and the AND-gate produces an output signal (g) which can be used to trigger the thyristor switch circuit (T) of the pulse generator to conduction to prevent thyristor damage or destruction.

The source for solar cells

본 발명은 태양전지 전원장치에 관한 것으로서, 특히 태양 에너지를 전기 에너지로 변환하여 직류전압을 출력하는 태양전지; 상기 태양전지의 직류전압을 입력하여 소정의 직류전압으로 변환하여 출력하는 초퍼회로; 상기 초퍼회로의 직류 전압을 충전하는 배터리; 및 상기 태양전지의 출력전압과 출력전류를 입력하여 상기 태양전지의 최대 전력점을 검출하고 이 검출신에 응답하여 상기 태양전지의 출력전류가 추종하도록 하여 상기 초퍼회로의 직류전압이 항상 일정하게 유지되도록 상기 초퍼회로를 제어하는 펄스 폭 제어기를 구비하는 것을 특징으로 한다. The present invention relates to a solar cell power supply, and more particularly, a solar cell that converts solar energy into electrical energy to output a DC voltage; A chopper circuit for inputting a DC voltage of the solar cell and converting the DC voltage into a predetermined DC voltage; A battery for charging the DC voltage of the chopper circuit; And inputting an output voltage and an output current of the solar cell to detect the maximum power point of the solar cell, and in response to the detection signal, to follow the output current of the solar cell so that the DC voltage of the chopper circuit is kept constant at all times. And a pulse width controller which controls the chopper circuit as much as possible. 따라서, 본 발명에서는 간단한 회로구성으로 태양 광의 세기나 온도에 관계 없이 항상 최대 전력점을 추종하여 항상 일정한 전원전압을 유지할 수 있다. Therefore, in the present invention, it is possible to maintain a constant power supply voltage at all times by following the maximum power point at all times regardless of the intensity or temperature of the solar light with a simple circuit configuration.