| 摘要 |
<p>PURPOSE:To make connection of a plurality of flashes capable of free extension easy and simple, by supplying an external flash stop signal to a flash light stop switching element and an output terminal. CONSTITUTION:When a synchronizing switch 1 is closed, flash tubes of a main flash SI and of extended flashes SII, SIII are flashed. The object reflection light by flash is detected at photodetector B of the device SI, a flash stop signal from a flash controlling circuit C triggers a thyristor 30 of a switching element via an external flash signal terminal 19, the flash of the device SI is automatically stopped and the flash stop signal via an amplifier G is applied to output terminals 21, 22. This external flash stop signal is given to an external terminal 28 which is out of contact with a terminal 26 of the device SII and triggers a thrystor 40 of a switching element and is applied to output terminals 29, 30 via the amplifier G. The device SII is distinguished and similarly the device SIII is also distinguished. Since no flash stop signal distributor is required, the connection of a plurality of falsh devices capable of free extension can be made simply and easily.</p> |
