Enhanced line powered amplifier

Details Enhanced line powered amplifier Enhanced line powered amplifier

1994-12-29

1996-04-02

Hofsass, Jeffery

Telephonic communications

Repeater

With gain or attenuation control

379398, 379399, 379345, H04B 336

Patent

active

055048110

ABSTRACT:
An enhanced amplifier for interconnecting a two-wire, bidirectional cable side transmission path and a two-wire bidirectional equipment side transmission path in a communication system includes a first splitter and a second splitter. The first splitter is formed of a cable-to-equipment voltage sense amplifier, a shunt current driver, and a series current compensator for generating a first simulated terminating impedance. The second splitter is formed of an equipment-to-cable voltage sense amplifier, the shunt current driver and the series current compensator for generating a second simulated terminating impedance. Other features disclosed include manual balancing circuitry for manually adjusting the cable side balance networks. Further, a loopback circuit is provided form facilitating remote testing and alignment of the amplifier from the cable side.

REFERENCES:
patent: 4961218 (1990-10-01), Kiko
patent: 5422929 (1995-06-01), Hurst et al.

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