发明申请
US20120306428A1 STEPPING MOTOR CONTROL CIRCUIT AND ANALOG ELECTRONIC TIMEPIECE
审中-公开
步进电机控制电路和模拟电子计时器
- 专利标题： STEPPING MOTOR CONTROL CIRCUIT AND ANALOG ELECTRONIC TIMEPIECE
- 专利标题（中）： 步进电机控制电路和模拟电子计时器
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申请号： US13479799申请日： 2012-05-24
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公开(公告)号： US20120306428A1公开(公告)日： 2012-12-06
- 发明人: Saburo MANAKA , Kenji Ogasawara , Kazumi Sakumoto , Keishi Honmura , Hiroshi Shimizu , Kosuke Yamamoto
- 申请人： Saburo MANAKA , Kenji Ogasawara , Kazumi Sakumoto , Keishi Honmura , Hiroshi Shimizu , Kosuke Yamamoto
- 优先权： JP2011-123327 20110601; JP2012-060966 20120316
- 主分类号： H02P8/00
- IPC分类号： H02P8/00
摘要：
A control unit is provided which drives a stepping motor in a first mode in which a driving pulse is selected between one kind of main driving pulse and a correction driving pulse with energy greater than the one kind of main driving pulse in accordance with a rotation state of the stepping motor and the stepping motor is driven or a second mode in which the driving pulse is selected among plural kinds of main driving pulses and a correction driving pulse with energy greater than the plural kinds of main driving pulses in accordance with the rotation state of the stepping motor and the stepping motor is driven. The control unit switches a mode between the first and second modes depending on whether the voltage of a secondary cell serving as a power supply exceeds a switch voltage and drives the stepping motor.
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