Supply-arrangement for a line circuit

Details Supply-arrangement for a line circuit Supply-arrangement for a line circuit

1978-06-05

1980-03-11

Tupper, Robert S.

179 18HB, 179 70, H04M 1900

Patent

active

041929756

ABSTRACT:
A supply arrangement for a subscriber's line circuit comprising a high frequency pulse source provided with switching means, controlled by a control generator for controlling the mark-space ratio of the high frequency pulse source. By the choice of the mark-space ratio, d.c. voltages of any desired level as well as a.c. voltages can be supplied to the subscriber's line.

REFERENCES:
patent: 3376494 (1968-04-01), Wilkinson
patent: 3683118 (1972-08-01), Vago et al.
patent: 3965447 (1976-06-01), Thomas
patent: 4021721 (1977-05-01), Tachibana
patent: 4115660 (1978-09-01), Croisier et al.

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