Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1985-05-21
1988-06-07
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307542, 307551, 307520, 328171, H03K 500, H03K 508
Patent
active
047499516
ABSTRACT:
A low-pass filter circuit comprises a low-pass filter including a series connection of first and second resistors and having one end connected to an input terminal and a capacitor connected between the other end of the series connection and the ground, a phase inverting amplifier having an input connected to the other end of the series connection, a feed back circuit connected between the input and output of the phase inverting amplifier and having a predetermined time constant, and a diode connected in parallel with the first resistor. The diode may be connected, with the cathode connected to the input terminal, so that the electric charge of the feed back circuit may be discharged. Alternatively, the diode may be connected, with the anode connected to the input terminal, so that the electric charge may be charged to the feed back circuit. Alternatively, two diodes may be connected in parallel with the first resistor, with the cathode of one of the diodes connected to the input terminal while with the anode of the other of the diodes connected to the input terminal.
REFERENCES:
patent: 3173095 (1965-03-01), Wagner
patent: 3390341 (1968-06-01), Kline
patent: 3524081 (1970-08-01), Campanella
patent: 3755750 (1973-08-01), Heberling
patent: 3895305 (1975-07-01), Longman, Jr.
patent: 4204170 (1980-05-01), Kage
patent: 4219745 (1980-08-01), Hersman
Callahan Timothy P.
Miller Stanley D.
Mitsubishi Denki & Kabushiki Kaisha
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