Circuit with feedback for controlling the impedance thereof

Details Circuit with feedback for controlling the impedance thereof Circuit with feedback for controlling the impedance thereof

1980-06-20

1982-11-16

Popek, Joseph A.

179 18FA, H04M 322

Patent

active

043596096

ABSTRACT:
An impedance control circuit with either current-controlled or voltage-controlled feedback loops in a transmission system. The impedance can be set at desired values, including complex values, and be different at different frequencies. The circuit is particularly useful in subscriber line interface circuits in telephone systems.

REFERENCES:
patent: 3731012 (1973-05-01), Shaffer
patent: 3748395 (1973-07-01), Herter

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