Circuit for cutting off power to an active RF component

Details Circuit for cutting off power to an active RF component Circuit for cutting off power to an active RF component

1995-12-18

1997-04-22

Burgess, Glenton B.

Television

Receiver circuitry

Power supply

455 33, 348 6, 379413, H04N 563

Patent

active

056233213

ABSTRACT:
A circuit for cutting off power to selected components in a network which requires that backup power be supplied to other components. A monitoring signal is generated and combined with the power coupled to the components. A signal detector in the selected components determines the absence of the monitoring signal which is indicative of a commercial power outage. The signal detector then activates a cutoff mechanism which cuts off a portion of the component from the backup power without obstructing the flow of power and of the monitoring signal to the output of the component so power may be used by other downstream components.

REFERENCES:
patent: 5233646 (1993-08-01), Kuromi
patent: 5313282 (1994-05-01), Hayashi
patent: 5345592 (1994-09-01), Woodmas
patent: 5389952 (1995-02-01), Kikins
patent: 5467384 (1995-11-01), Skinner, Sr.
patent: 5483291 (1996-01-01), Karlock

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