| 摘要 |
PURPOSE:To allow the repeated high-speed flash of flashlight. CONSTITUTION:A doubled voltage applying capacitor 28 is concurrently used for the trigger capacitor of a trigger circuit BL5 in an electronic flash device using an IGBT 26, thereby the circuit constitution can be simplified. The capacitor 28 is recharged by the flash flowing in a flashlight 24 immediately after the continuity between the collector and emitter of the IGBT 26 is cut off. Repeated high-speed flash can be coped with. |
