Arrangement for feeding a subscriber device

Details Arrangement for feeding a subscriber device Arrangement for feeding a subscriber device

1981-02-27

1983-01-25

Brigance, Gerald L.

179 77, 179 18FA, H04M 1900

Patent

active

043705278

ABSTRACT:
In a circuit for supplying operating power from a power supply at a central office to a telephone device at a subscriber location via a two-wire line, and including a switching unit at the subscriber location actuatable to connect the telephone device to the power supply to place the device into operation, there are further provided a first switching device connected between the power supply and the line for controlling the supply of power to the line, and a second switching device connected between the line and the telephone device for controlling the delivery of power from the line to the telephone device, with each switching device being connected to respond to the traversing of a threshold by a parameter of the power from the power supply.

REFERENCES:
patent: 3035122 (1962-05-01), Livingstone
patent: 3562561 (1971-02-01), Klosterman
patent: 3649769 (1972-03-01), Pest
patent: 3800095 (1974-03-01), Cowpland
patent: 4197425 (1980-04-01), Secrett et al.

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