Transmission bridge for a subscriber's circuit

Details Transmission bridge for a subscriber's circuit Transmission bridge for a subscriber's circuit

1979-09-20

1981-09-01

Moffitt, James W.

179 77, H04M 1908, H04M 318

Patent

active

042873932

ABSTRACT:
A transmission bridge comprising two alternating current circuits having a non-inverting signal input, an inverting signal input and a signal output, the non-inverting signal inputs being coupled to associated connecting terminals for the connection of a subscriber's line, the inverting signal inputs being connected to those terminals to which the non-inverting signal inputs of the other alternating current circuits are coupled, the outputs being coupled to the connecting terminals via supply resistors for preventing the anti-phase signals such as speech signals, present at the terminals, from being attenuated and for attenuating by means of the supply resistors in-phase signals, such as noise signals induced in the subscriber's line, present at the terminals.

REFERENCES:
patent: 4007335 (1977-02-01), Hetherington et al.
patent: 4041252 (1977-08-01), Cowden
patent: 4088843 (1978-05-01), Rogers et al.

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