发明名称 |
Motor control circuit having motor protective circuit |
摘要 |
When an operation switch of a motor control circuit is switched on or when the operation switch and an automatic operation switch are simultaneously switched on, a switching device is switched on to energize a relay winding and a contact in the relay is switched to drive a motor. When an overcurrent is passed to a current detecting resistor and a temperature rise in the current detecting resistor is detected by the temperature dependent resistor and/or when a rise in a voltage across terminals of the current detecting resistor is detected by an overvoltage detecting circuit, the switching device is switched off via the bias circuit to thereby stop the driving of the motor.
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申请公布号 |
US6744609(B2) |
申请公布日期 |
2004.06.01 |
申请号 |
US20010790396 |
申请日期 |
2001.02.21 |
申请人 |
ALPS ELECTRIC CO., LTD. |
发明人 |
HIWATARI MINORU;TANAKA MASAAKI;NAKAYA HIROAKI;NAGAOKA SHUICHI;TAKAGI ISAO |
分类号 |
H02P1/22;H02H7/085;H02P3/08;(IPC1-7):H02H5/04 |
主分类号 |
H02P1/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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