发明授权
- 专利标题： Electromagnetic shutter driving circuit
- 专利标题（中）： 电磁快门驱动电路
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申请号： US047116申请日： 1979-06-11
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公开(公告)号： US4280761A公开(公告)日： 1981-07-28
- 发明人: Yukio Ogawa , Ryoichi Suzuki , Takao Kinoshita , Takashi Uchiyama
- 申请人： Yukio Ogawa , Ryoichi Suzuki , Takao Kinoshita , Takashi Uchiyama
- 申请人地址： JPX Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX53-73040 19780616
- 主分类号： G03B7/087
- IPC分类号： G03B7/087 ; G03B7/083 ; G03B9/10 ; G03B9/24 ; G03B7/097 ; H01H47/00
摘要：
In the disclosed circuit, an electromagnetically driven shutter is opened and closed by an electromagnetic drive device. A detector senses the current through or the voltage across an exciting member of the electromagnetic drive. A drive circuit is controlled by a comparator which compares the output of a constant voltage source with the output of the detector. The drive circuit is regulated so that when the shutter is opened and closed, the current is maintained at predetermined values so as to always keep the shutter characteristics constant.
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