Electronic flash with safety switch feature

Details Electronic flash with safety switch feature Electronic flash with safety switch feature

1981-03-05

1983-01-18

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Condenser in the supply circuit

Condenser in shunt to the load device and the supply

307328, 315240, 362 10, H05B 4132

Patent

active

043693954

ABSTRACT:
A safety switch arrangement is provided for an electronic flash for automatically discharging the main storage capacitor in response to the user deliberately or inadvertently removing the cover from the flash housing. The electronic flash is of any ordinary type comprising a DC-to-DC converter with a step-up transformer and the safety switch arrangement is connected to discharge the main storage capacitor through the secondary winding of the DC-to-DC converter transformer thereby eliminating the need for a separate bleeder resistor.

REFERENCES:
patent: 2283729 (1942-05-01), Gage
patent: 2779879 (1957-01-01), Spiece
patent: 3921034 (1975-11-01), Nakamura
patent: 3969737 (1976-07-01), Kendrick
patent: 4063108 (1977-12-01), Klett et al.
patent: 4160174 (1979-07-01), Zucker
patent: 4196458 (1980-04-01), Kondo
patent: 4204140 (1980-05-01), Willis
patent: 4251753 (1981-02-01), Kondo
patent: 4255691 (1981-03-01), Inagaki et al.

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