发明授权
- 专利标题： Photointerrupter driving circuit capable of decreasing the number of parts
- 专利标题（中）： 光断续器驱动电路能够减少部件数量
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申请号： US234160申请日： 1999-01-21
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公开(公告)号： US6150651A公开(公告)日： 2000-11-21
- 发明人: Akira Shibata , Yoshihito Otomo , Koichi Seno
- 申请人： Akira Shibata , Yoshihito Otomo , Koichi Seno
- 申请人地址： JPX Tokyo
- 专利权人： Mitsumi Electric Co., Ltd.
- 当前专利权人： Mitsumi Electric Co., Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX10-014236 19980127
- 主分类号： G11B33/12
- IPC分类号： G11B33/12 ; H01L31/12 ; H01L31/167 ; H01J40/121
摘要：
In a photointerrupter comprising a light emitting diode and a photo transistor which are opposed to each other, the photo transistor has an emitter which is grounded through a resistor while the light emitting diode has a cathode which is connected to an input terminal of a one IC chip for controlling a flexible disk drive. The one IC chip incorporates a constant current source which is connected to the input terminal through an npn-type bipolar transistor. The one IC chip incorporates a logic circuit having an output terminal which is connected to a base of the npn-type bipolar transistor.
公开/授权文献
- USD266239S Trailer wind deflector 公开/授权日：1982-09-21
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