| 摘要 |
<p>With an automatic photoflash device embodying this invention, detection is made of a level of voltage charged in a main capacitor (12) for supplying discharged energy to an electronic flash tube (15) and also of a level of voltage charged in a quenching capacitor (18) of a quenching circuit to interrupt the flash irradiation of the electronic flash tube (15). The subject automatic photoflash device comprises an alarm unit (33, 34), which, when a voltage charged in the main capacitor (12) 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 (18) has too low a level to allow for the quenching of the flash tube (15), sends forth a second alarm.</p> |
