Apparatus for providing a time controlled output

Details Apparatus for providing a time controlled output Apparatus for providing a time controlled output

1979-11-16

1981-07-07

Hix, L. T.

Electrical transmission or interconnection systems

Switching systems

Switch actuation

328 48, 307269, 307219, 331 55, H01H 4300

Patent

active

042776937

ABSTRACT:
An apparatus for providing a time-controlled output based primarily upon a primary time source and secondarily upon a secondary time source, the secondary time source counted down to the desired frequency of the time-controlled output. A sensor supplies a control circuit which outputs the primary time source signal when the primary time source is operative, and the secondary time source signal when the primary time source is not operative. The output of the control circuit then resets the appropriate segment of the secondary time source counter in order to synchronize the time-controlled output for the primary time source when the primary time source is operative.

REFERENCES:
patent: 4145617 (1979-03-01), Lee et al.
patent: 4156200 (1979-05-01), Gomez
patent: 4213064 (1980-07-01), Nagano

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