Bandpass filter

Details Bandpass filter Bandpass filter

1974-09-20

1976-07-27

Rolinec, R. V.

Amplifiers

Signal feedback

Phase shift means in loop path

330 85, 330108, H03F 136

Patent

active

039720063

ABSTRACT:
An active filter for electronic circuits comprising a single frequency bandpass filter including two stages each comprising a differential input high performance operational amplifier with the output of a second stage being connected in feedback relationship to one input of the first stage and the output of the first stage being interconnected with one input of the second stage. The output of the filter circuit is taken from the output of the first stage of the amplifier and the input to the filter circuit is the negative input of the first stage of the amplifier.

REFERENCES:
patent: 3633043 (1972-01-01), Anthony

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