Shockproof electronic flash device

Details Shockproof electronic flash device Shockproof electronic flash device

1979-04-27

1981-03-10

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Condenser in the supply circuit

Condenser in shunt to the load device and the supply

328 7, 331 63, 354145, H05B 4132

Patent

active

042556910

ABSTRACT:
An electronic photoflash device includes a high voltage DC generator, a main storage capacitor and a reflector backed photoflash tube unit mounted on an insulating substrate on which are printed a high voltage conductor line connecting first terminals of the generator, capacitor and tube and a ground conductor line connecting their opposite terminals. The ground line surrounds and is proximate the high-voltage line so that the deposition of water on the substrate extends between and short-circuits the lines to discharge the high-voltage and eliminates the risk of an electric shock to the device operator. Alternative arrangements may be provided for surrounding the high-voltage conductor with the ground conductor, the conductors having proximate bare portions bridged by a surface which, when moistened, short circuits the conductors.

REFERENCES:
patent: 3711741 (1973-01-01), Akiyama et al.
patent: 4153357 (1979-05-01), Winnacker et al.

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