Automatic level control circuit

Details Automatic level control circuit Automatic level control circuit

1991-01-24

1992-05-26

Laroche, Eugene R.

Amplifiers

With semiconductor amplifying device

Including gain control means

330 2, 330298, 330278, 330286, 333111, H03G 330

Patent

active

051172020

ABSTRACT:
Automatic Level Control (ALC) circuit having a directional coupler, for branching an output of an amplifier, and a detector, for detecting the branched output, is disclosed. When saturation of the amplifier is measured, coupling by the directional coupler is decreased and the input signal to the detector can be kept below a predetermined value.

REFERENCES:
patent: 4563775 (1986-01-01), Yokosuka
patent: 4635006 (1987-01-01), Praba
patent: 4679011 (1987-07-01), Praba et al.
patent: 4814780 (1989-03-01), Sterns et al.
patent: 4996500 (1991-02-01), Larson et al.

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