Active RC filter having band-rejection and all-pass modes

Details Active RC filter having band-rejection and all-pass modes Active RC filter having band-rejection and all-pass modes

1988-10-12

1990-04-17

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328155, 328167, 330306, H03B 100, H03K 500

Patent

active

049183370

ABSTRACT:
An active filter circuit operable in a band-rejection mode and in an all-pass mode. A cascade combination of an RC filter and amplifier circuit receives an input signal. A pair of amplifiers respectively receive the input signal and the output of the RC filter and amplifier combination. The outputs of the amplifier pair are summed, and the circuit mode is determined by the RC component values and the amplifier gains.

REFERENCES:
patent: 3652952 (1972-03-01), Chen
patent: 4001712 (1977-01-01), Chambers et al.
patent: 4238744 (1980-12-01), Iwahara
patent: 4301420 (1981-11-01), Sugawara
patent: 4388595 (1983-06-01), Brooks
patent: 4792744 (1988-12-01), Antoine

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