Clamping circuit

Details Clamping circuit Clamping circuit

1992-02-10

1993-04-27

Sikes, William L.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307562, 307362, H03K 505, H03K 5135

Patent

active

052065537

ABSTRACT:
In a clamping circuit comprising a voltage comparator for comparing an input signal voltage supplied to the signal input terminal and a reference voltage, a clamping circuit of the present invention comprises a bias voltage supplying circuit and a switch circuit inserted between the bias voltage supplying circuit and the signal input terminal. The input signal voltage is compared with the reference voltage by the voltage comparator, and the switch circuit is ON/OFF-controlled on the basis of the comparison result. When the switch circuit is enabled, a bias voltage supplying circuit is supplied to the signal input terminal, and the input signal voltage is clamped at a voltage equal to the reference voltage. When the switch circuit comprises a CMOS transfer gate, a voltage drop does not occur across the switch circuit regardless of the value of the bias voltage.

REFERENCES:
patent: 3200346 (1965-08-01), Young
patent: 3783381 (1974-01-01), Oshima
patent: 4315220 (1982-02-01), Findeisen
patent: 4382198 (1983-05-01), Ishijima et al.
patent: 4511814 (1985-04-01), Matsuo et al.
patent: 4544854 (1985-10-01), Ulmer et al.
patent: 4590394 (1986-05-01), Pace
patent: 4603299 (1956-07-01), Monett
patent: 4883987 (1989-11-01), Fattaruso
patent: 4910455 (1990-03-01), Nado
"The Art of Electronics", Horowitz et al., Cambridge University Press, p. 95 and p. 335.

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