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    • 4. 发明授权
    • Automatic photoflash device
    • 自动闪光灯
    • US4344684A
    • 1982-08-17
    • US236903
    • 1981-02-23
    • Takashi Tsukaya
    • Takashi Tsukaya
    • G03B15/05H05B41/30H05B41/32G03B15/02
    • H05B41/325G03B15/05G03B2215/05
    • 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.
    • 一种自动闪光装置,其特征在于,检测由用于向电子闪光管提供放电能量的主电容器中充电的电压水平以及在淬灭电路的淬火电容器中充电的电压水平,以中断闪光灯的闪光照射 电子闪光管。 被摄体自动闪光装置包括报警单元,当主电容器中充电的电压具有比允许闪光装置的发光所需的电平低的电平时,给出第一报警,并且当在 淬火电容器具有太低的水平以允许闪光管的淬火,发出第二个报警。