Circuit arrangement for the transmission of telecommunication si

Details Circuit arrangement for the transmission of telecommunication si Circuit arrangement for the transmission of telecommunication si

1991-03-01

1993-10-12

Dwyer, James L.

Telephonic communications

Subscriber line or transmission line interface

379362, 379416, H04M 174

Patent

active

052532909

ABSTRACT:
A connecting line is provided between a switching center and a subscriber for transmission of telecommunication signals. At the subscriber's end of the connecting line, there is located a device which, in addition to other passive and active units, includes a transformer, whose output winding is subdivided into two partial windings of identical size. A first capacitor, a switch and a second capacitor are connected in series between the partial windings. To prevent distortions of the dial pulses, a connecting line between the switch and the second capacitor is connected with a reference potential of the circuit arrangement.

REFERENCES:
patent: 4164713 (1979-08-01), Brolin
patent: 4527016 (1985-07-01), Sublette
patent: 4636588 (1987-01-01), Nakayama et al.

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