Exciting circuit for electronic flash device

Details Exciting circuit for electronic flash device Exciting circuit for electronic flash device

1983-06-27

1986-07-22

Moore, David K.

Electric lamp and discharge devices: systems

Condenser in the supply circuit

Condenser in shunt to the load device and the supply

354416, H05B 3700

Patent

active

046021949

ABSTRACT:
An excitation circuit for an electronic flash device for a photographic camera is arranged to energize the flashtube in a plurality of successive steps for each shot. In each of the successive steps, the flashtube is energized only for a time interval which is shorter than the time interval required by the flashtube to operate at its full power. This keeps the proportion of infrared radiation to a minimum.

REFERENCES:
patent: 4225218 (1980-09-01), Numata
patent: 4275335 (1980-03-01), Ishida
patent: 4344680 (1982-08-01), Ishida et al.

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