Signal limiter circuits

Details Signal limiter circuits Signal limiter circuits

1974-08-14

1976-02-24

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328147, 307237, 307235A, 307235N, H03K 508

Patent

active

039407047

ABSTRACT:
A dual limiter circuit for limiting an input signal between high and low limits and having a first and a second operational amplifier with the positive inputs of the amplifiers being supplied with respective threshold, or limit, signals. A third operational amplifier has its positive input supplied with an input signal to the limiter circuit. A respective output impedance for each amplifier connects the output of the corresponding amplifier to the output of the limiter circuit while a feedback connection from the limiter output circuit is connected to the negative inputs of all three amplifiers. This dual limiter circuit operates for all values of the input signal to have one of the amplifiers operating in its linear region to control the output signal from the limiter circuit while the other two amplifiers are operated in saturated states in opposite senses.

REFERENCES:
patent: 3513353 (1970-05-01), Lansch
patent: 3648071 (1971-03-01), Mrazek
patent: 3758867 (1973-09-01), Schulz
patent: 3851259 (1974-11-01), Porawski

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