Electronic flash device

Details Electronic flash device Electronic flash device

1981-06-24

1983-08-02

La Roche, Eugene R.

Electric lamp and discharge devices: systems

Condenser in the supply circuit

Condenser in shunt to the load device and the supply

315135, 315219, H05B 4132

Patent

active

043968708

ABSTRACT:
An electronic flash device provided with an auxiliary winding electromagnetically coupled to a winding in a DC-DC converter which is connected to a main power supply and generates a voltage for charging a main flash capacitor, an auxiliary capacitor adapted to be charged with at least the voltage induced across the auxiliary winding, and a control circuit for maintaining the voltage charged across the auxiliary capacitor at a predetermined level, whereby the voltage charged across the auxiliary capacitor can be delivered to integrated circuits for the flash device.

REFERENCES:
patent: 4068150 (1978-01-01), Iwata et al.
patent: 4197484 (1980-04-01), Tanaka
patent: 4301392 (1981-11-01), Hirata

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