Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Patent
1993-11-26
1995-04-18
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
327393, 327427, H03K 301
Patent
active
054081491
ABSTRACT:
A power control circuit for an electronic equipment capable of turning off a power switch to prevent useless consumption of a power supply battery when non-operation of an electronic equipment over a predetermined period of time is detected. A counter circuit 25 is reset when a power switch is turned on, so that a main switch is turned on to render an electronic equipment operative. When a signal is generated from a logical circuit detecting auto cut-off conditions, a clock signal is fed from a control circuit to the counter circuit, so that the main switch is turned off by a carryover signal. After the auto cut-off conditions are detected, a predetermined number of clock pulses are counted to cause the main switch to be turned off, to thereby prevent malfunction of the electronic equipment due to incidental introduction of noise thereinto.
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Aneha Akira
Inokoshi Satoshi
Callahan Timothy P.
Futaba Denshi Kogyo K.K.
Lam T. T.
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