Feedback amplifier having a voltage-controlled compensation circ

Details Feedback amplifier having a voltage-controlled compensation circ Feedback amplifier having a voltage-controlled compensation circ

1982-10-04

1984-11-06

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including signal feedback means

330107, 330271, H03F 134

Patent

active

044814801

ABSTRACT:
A feedback amplifier is provided with a voltage-controlled compensation circuit which varies the effective feedback capacitance by controlling a proportional amount of feedback current returned via the capacitor to the amplifier summing node. The proportionality and current steering of the feedback current is effected by a multiplier circuit, the bias of which is controlled by an adjustable DC voltage. Several feedback amplifier configurations are shown herein, exemplifying the versatility of the compensation circuit of the present invention.

REFERENCES:
patent: 3946328 (1976-03-01), Boctor
patent: 4339729 (1982-07-01), Jason et al.
patent: 4356451 (1982-10-01), Wilson

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