Subscriber loop feed apparatus

Details Subscriber loop feed apparatus Subscriber loop feed apparatus

1978-10-02

1980-04-08

Konick, Bernard

179 16F, 179170R, H04M 1908, H04B 158

Patent

active

041974310

ABSTRACT:
Telephone loop feed apparatus in which a hybrid couples audio signals to and from the subscriber loop and presents a high impedance to the loop relative to the loop impedance. DC power is coupled to the loop by matched resistors which determine the loop feed matching resistance. DC power is blocked from the hybrid to avoid saturation.

REFERENCES:
patent: 2835740 (1958-05-01), Heetman
patent: 3042816 (1962-07-01), Aagaard
patent: 3828146 (1974-08-01), Lewis
patent: 3911372 (1975-10-01), Seidel
patent: 3916110 (1975-10-01), Lee et al.
patent: 3993880 (1976-11-01), O'Neill
patent: 4004104 (1977-01-01), Picandet et al.
J. Atkinson, "Telephony," 1948, British Post Office Publication, TK6161 H57, pp. 75-79.

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