Analog feedback amplifier employing a four-quadrant integrated c

Details Analog feedback amplifier employing a four-quadrant integrated c Analog feedback amplifier employing a four-quadrant integrated c

1974-06-03

1976-03-09

Farley, Richard A.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307262, H03B 304

Patent

active

039434559

ABSTRACT:
An analog feedback circuit for producing a null or zero output for two eir in-phase or 180.degree. out-of-phase input signals applied to the circuit. The dc control voltage is applied along with the first input signal to a multiplier whose output is summed with the second input signal in an operational amplifier to provide the amplitude and phase of the control voltage.

REFERENCES:
patent: 3031142 (1962-04-01), Cohen et al.
patent: 3308287 (1967-03-01), Levy et al.
patent: 3579128 (1971-05-01), Smith et al.
patent: 3838262 (1974-09-01), VAN DE Plassche

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