Amplifier circuit having independent gain and response time adju

Details Amplifier circuit having independent gain and response time adju Amplifier circuit having independent gain and response time adju

1996-12-10

1999-02-09

Mullins, James B.

Amplifiers

Signal feedback

Phase shift means in loop path

330294, H03F 134

Patent

active

058699988

ABSTRACT:
An amplifier circuit (20) having independent gain and response time adjustments includes an amplifier (22), a response time resistor (30), a variable gain resistor (32) attached to the response time resistor and to an output of the amplifier (22), a response time capacitor (34) connected in parallel to the response time resistor (30), an anti-gain resistor (36) connected to a response time (30) and variable gain resistor (32) and to ground, and an input resistor (38) connected to the response time resistor (30) and to in input terminal of the amplifier (22). The response time resistor has a substantially greater resistance value than a resistance value of the variable gain resistor (32) for allowing a gain adjustment of the amplifier circuit (20) without changing the response time of the amplifier (22).

REFERENCES:
patent: 3883830 (1975-05-01), Hekimian
Clarke, "Ring of Two BP Filter With Independent Adjustment", Electronic Engineering, vol. 52, No. 64, p. 19, Aug. 1980.

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