Electronic flash device

Details Electronic flash device Electronic flash device

1976-02-13

1978-06-13

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Condenser in the supply circuit

Condenser in shunt to the load device and the supply

315159, 354145, H05B 4132

Patent

active

040951413

ABSTRACT:
The trigger circuit of an electronic flash device includes a pulse transformer connected to a trigger electrode of a flash tube, a capacitor connected to the pulse transformer, a thyristor connected in the discharge path of the capacitor, and a control circuit for the thyristor. This control circuit is provided with a low-voltage trigger means for applying a trigger pulse to said thyristor and further with a synchronous switch connected therein so that the synchronous switch operates with a low voltage.

REFERENCES:
patent: 3502943 (1970-03-01), Wechsler
patent: 3634725 (1972-01-01), Biber
patent: 3727100 (1973-04-01), Kuraishi et al.
patent: 3742297 (1973-06-01), Peacock
patent: 3774072 (1973-11-01), Ogawa
patent: 3809954 (1974-05-01), Engelstatter
patent: 3875471 (1975-04-01), Buck

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