Flash apparatus with power supply control device

Details Flash apparatus with power supply control device Flash apparatus with power supply control device

1983-12-27

1985-06-11

Perkey, William B.

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Plural load device systems

3541271, 3541451, 315136, 315241P, G03B 1505, H05B 4126

Patent

active

045224790

ABSTRACT:
Disclosed is a power supply control device which automatically cuts off power to a flash apparatus by turning off a power switch a predetermined time after the switch is turned on to prevent waste of electrical energy arising from careless failure to turn off the power switch. The power supply control device is provided with a timer circuit which sets the predetermined period of time and is arbitrarily resetable with a manually operable power switch.

REFERENCES:
patent: 3738239 (1973-06-01), Higuchi
patent: 4001640 (1977-01-01), Biber
patent: 4444483 (1984-04-01), Nakajima

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