Radio frequency equalizer

Details Radio frequency equalizer Radio frequency equalizer

1981-11-25

1983-09-20

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of equalizing

360 67, G11B 545, G11B 502

Patent

active

044059540

ABSTRACT:
A control circuit for selectively combining two or more input signals is comprised of two amplifier circuits, each having two input stages and a dual output stage with one output stage of each amplifier circuit being gain controllable in response to a control signal. The gain controllable output stages are connected to a single combined output terminal and the other output stages are connected to a circuit ground. One input signal is supplied to one input stage of each amplifier circuit whereas the other input signal is supplied in non-inverted form to the other input stage of one of the amplifier circuits and is supplied in inverted form to the other input stage of the other amplifier circuit.

REFERENCES:
patent: 3757254 (1973-09-01), Takahashi
patent: 4271439 (1981-06-01), Wray

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