Amplification and gain control circuit

Details Amplification and gain control circuit Amplification and gain control circuit

1976-03-12

1977-06-28

Rolinec, Rudolph V.

Amplifiers

Signal feedback

Combined with control of bias voltage of signal amplifier

330145, H03G 330

Patent

active

040328546

ABSTRACT:
An amplification and gain control circuit is disclosed in which there is provided in the output circuit of an amplification circuit receiving a gain control input, a semiconductor junction capacitance whose capacity is increased when the amplification circuit receives a gain control input causing gain to be reduced, whereby attenuation of the amplification circuit is assisted and the gain control sensitivity is improved, and which also acts to protect subsequent stages from variations of the direct current value which may occur due to the variation of gain by the amplification circuit.

REFERENCES:
patent: 3177439 (1965-04-01), Tulp et al.
patent: 3571721 (1971-03-01), Jabbar
patent: 3633119 (1972-01-01), Balbes
patent: 3743770 (1973-07-01), Vidovic

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