Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Patent
1994-07-19
1996-07-16
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
327208, 327 57, 327 65, H03F 345
Patent
active
055370667
ABSTRACT:
A flip-flop type amplifier circuit is adapted to amplify a voltage difference between a first voltage and a second voltage. This amplifier circuit includes a first power line supplying a first power supply voltage, a second power line supplying a second power supply voltage lower than the first power supply voltage, a flip-flop circuit including first through fourth nodes, and first and second inverters coupled in a ring. The first node couples an input of the first inverter and an output of the second inverter and receiving the first voltage, and the second node couples an output of the first inverter and an input of the second inverter and receives the second voltage. A first impedance element is coupled between the first power line and the third node of the flip-flop circuit, and a second impedance element is coupled between the second power line and the fourth node of the flip-flop circuit. A switch, coupled between the third and fourth nodes of the flip-flop circuit, electrically connects the third and fourth nodes in an ON state and disconnects the third and fourth nodes in an OFF state in response to a reset control signal. The switching means is turned ON when resetting the flip-flop type amplifier circuit, and is turned OFF after the resetting, in response to the reset control signal.
REFERENCES:
patent: 4169233 (1979-09-01), Haraszti
patent: 4558241 (1985-12-01), Suzuki et al.
patent: 4627033 (1986-12-01), Hyslop et al.
patent: 5055720 (1991-10-01), Tiede
patent: 5169878 (1993-03-01), Miyamoto et al.
patent: 5196737 (1993-03-01), Olmstead
Callahan Timothy P.
Fujitsu Limited
Kim Jung H.
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