Transmission bridge for a subscriber's circuit

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

H - Electricity

04

M

379/67

H04M 7/00 (2006.01) H04M 19/00 (2006.01)

Patent

CA 1138139

1-3-1979 1 PHN 9249 "ABSTRACT" Transmission bridge for a subscriber's circuit. A transmission bridge comprising two alter- nating current circuits having a non-inverting signal input, an inverting signal input and a signal output, the non-inverting signal inputs being coupled to associ- ated connecting terminals for the connection of a sub- scriber's line, the inverting signal inputs being connect- ed 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.

336884

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