Automatic gain control detection circuit

Details Automatic gain control detection circuit Automatic gain control detection circuit

1986-03-27

1988-02-09

Mullins, James B.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

330256, H03K 500, H03F 345

Patent

active

047243376

ABSTRACT:
An automatic gain control (AGC) detection circuit. The AGC detection circuit includes; a current source, first to fourth transistors whose emitters are connected in common to the current source, a reference voltage source for supplying the bases of the first and the second transistors with a reference voltage, input terminal means connected to the bases of the third and the fourth transistors for receiving an input signal, a power supply source for supplying the first to fourth transistors with a power supply voltage, first collector load means connected between the power supply source and a node connecting the collectors of the first and second transistors in common, second collector load means connected between the power supply source and another node connecting the collectors of the third and fourth transistors in common, and an output terminal means connected between the nodes for taking out an automatic gain control detection output.

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