Electronic filter circuit
Номер патента: CA1070783A
Опубликовано: 29-01-1980
Автор(ы): Michael M. Van Schoiack
Принадлежит: Sundstrand Data Control Inc
Опубликовано: 29-01-1980
Автор(ы): Michael M. Van Schoiack
Принадлежит: Sundstrand Data Control Inc
Реферат: ABSTRACT OF THE DISCLOSURE To eliminate the high frequency portion of an input signal while permitting low frequency and DC portions to pass, the electronic filter utilizes an n-l order active network in combination with a capacitor to generate 2 shunt current, thereby providing a low pass filter having n-order operating characteristics. Included in the active network is an active element, such as an operational amplifier, which responds to an input signal by creating a vol-tage across the capacitor resulting in a shunt current that in turn provides the desired filter characteristics. In certain special cases the n-order ac-tive filter can utilize a differentiating element in combination with an n-2 order active network along with the capacitor to achieve n-order operating characteristics.
High-pass filter circuit and band-pass filter circuit
Номер патента: US09923546B2. Автор: Yasukazu Nakatani,Takeshi Nagahisa. Владелец: Ricoh Co Ltd. Дата публикации: 2018-03-20.