发明名称 |
Electric flash device |
摘要 |
An electric flash device for photography is controlled of its light radiation of a flash tube by a transistor, which is connected in series with the flash tube and is given its base current through a parallelly connected capacitor and resistor, and when the transistor turns OFF, an electric charge stored in the capacitor is applied across the base and the emitter of the transistor as a reverse bias.
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申请公布号 |
US4697906(A) |
申请公布日期 |
1987.10.06 |
申请号 |
US19860912000 |
申请日期 |
1986.09.26 |
申请人 |
WEST ELECTRIC COMPANY, LTD. |
发明人 |
KOBAYASHI, TAKASHI;MARUYAMA, YUJI |
分类号 |
H05B41/32;(IPC1-7):H05B41/00;G03B15/05 |
主分类号 |
H05B41/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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