发明授权
US07221858B2 Pulse-width modulation motor speed control circuit 失效
脉宽调制电机调速电路

  • 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
  • 申请号: US11308608
    申请日: 2006-04-11
  • 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
Pulse-width modulation motor speed control circuit
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).
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