Power saving circuit for use with a converter circuit in a telep

Details Power saving circuit for use with a converter circuit in a telep Power saving circuit for use with a converter circuit in a telep

1976-09-13

1978-01-17

Robinson, Thomas A.

Telegraphy

Systems

Printing

178 69G, 179 16A, H04M 1100

Patent

active

040693961

ABSTRACT:
Power saving means is shown for use with a converter circuit in a telephone switching installation. The converter circuit comprises an analog-to-digital converter and a digital-to-analog converter. The voltage supply for the converter circuit is switched on only upon the appearance of analog signals to be converted into digital signals or digital signals to be converted into analog signals.

REFERENCES:
patent: 3723656 (1973-03-01), Curtis et al.
patent: 4021615 (1977-05-01), James et al.

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