Automatic gain control circuit

Details Automatic gain control circuit Automatic gain control circuit

1978-09-06

1981-03-10

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including gain control means

H03G 330

Patent

active

042557160

ABSTRACT:
An automatic gain control circuit which comprises a variable resistance element connected between the power source and a transistor element to amplify a signal. The resistance of the variable resistance element is controlled according to the output of the transistor element. The resistance of the variable resistance element is decreased in response to the increment in amplitude of the output of the transistor element, which decreases the amplitude of the output signal.

REFERENCES:
patent: 3268828 (1966-08-01), Mollinga
patent: 3286189 (1966-11-01), Mitchell et al.
Hunter, Handbook of Semiconductor Electronics, copyright 1956, 1962, McGraw-Hill Book Company, Inc., pp. 17-16, 17-17.
Bilotti, "A Distributed MOS Attenuator", Proceedings of the IEEE, Apr. 1967, pp. 562, 563.
McIntosh-"Variable Resistance FET gives 75Db Gain Control"-Electronic Design, p. 56, Aug. 1963.

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