| 摘要 |
An automatic photoflash device wherein detection is made of a level of voltage charged in a main capacitor for supplying discharge energy to an electronic flash tube and also of a level of voltage charged in a quenching capacitor of a quenching circuit to interrupt the flash irradiation of the electronic flash tube. The subject automatic photoflash device comprises an alarm unit, which, when a voltage charged in the main capacitor has a lower level than required to allow for the light emission of the flash device, gives a first alarm, and, when a voltage charged in the quenching capacitor has too low a level to allow for the quenching of the flash tube, sends forth a second alarm.
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