Control circuit and flash system using same

Details Control circuit and flash system using same Control circuit and flash system using same

2011-08-16

2011-08-16

Le, Don (Department: 2819)

Electric lamp and discharge devices: systems

Discharge device and/or rectifier in the supply circuit

Flashers

C315S24100S

Reexamination Certificate

active

07999480

ABSTRACT:
A control circuit is configured to control the charge and discharge of a flash unit. The flash unit includes an anode, a cathode, and a trigger electrode. The control circuit includes a charging circuit and a triggering circuit. One terminal of the charging circuit is coupled to a charging terminal and another terminal is coupled to the anode and the cathode. One terminal of the triggering circuit is coupled to a triggering terminal, another terminal is couple to the trigger electrode. The charging circuit includes a first capacitor coupled to the cathode and a second capacitor coupled to the anode. When the charging terminal receives a charging voltage and the triggering terminal receives a high-level voltage, three times charging voltage is formed between the anode and the cathode; then the flash unit generates a flash.

REFERENCES:
patent: 5187410 (1993-02-01), Shimizu et al.
patent: 5264895 (1993-11-01), Takahashi et al.
patent: 6066926 (2000-05-01), Yamada
patent: 7522831 (2009-04-01), Feng et al.
patent: 7633234 (2009-12-01), Drader et al.
patent: 2002/0047626 (2002-04-01), Odaka et al.
patent: 2002/0171372 (2002-11-01), Motomura et al.
patent: 2006/0226789 (2006-10-01), Maishima

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