发明授权
- 专利标题: Pulse-width modulation motor speed control circuit
- 专利标题(中): 脉宽调制电机调速电路
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申请号: US11308608申请日: 2006-04-11
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公开(公告)号: US07221858B2公开(公告)日: 2007-05-22
- 发明人: Chin-Long Ku
- 申请人: Chin-Long Ku
- 申请人地址: TW Tu-Cheng, Taipei Hsien
- 专利权人: Foxconn Technology Co., Ltd.
- 当前专利权人: Foxconn Technology Co., Ltd.
- 当前专利权人地址: TW Tu-Cheng, Taipei Hsien
- 代理商 Winston Hsu
- 优先权: CN200520061963 20050722
- 主分类号: H02P7/29
- IPC分类号: H02P7/29
摘要:
A PWM motor speed control circuit (10) includes a PWM signal generator (20), a driver integrated circuit (IC) (101) and a photocoupler (30) coupled between the PWM signal generator and the driver IC. The photocoupler receives an original PWM signal generated by the PWM signal generator and outputs a new PWM signal in response to the original PWM signal, wherein a voltage parameter of the original PWM signal is isolated by the photocoupler from a voltage parameter of the new PWM signal. The new PWM signal is fed to the driver IC and used for controlling speed of a motor (100).
公开/授权文献
- US20070019934A1 PULSE-WIDTH MODULATION MOTOR SPEED CONTROL CIRCUIT 公开/授权日:2007-01-25
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