发明名称 |
ELECTROMAGNETIC COIL DRIVE DEVICE |
摘要 |
An electromagnetic coil drive device has a semiconductor switch connected in series with an electromagnetic coil for controlling a current supplied to the coil; a capacitor; a comparator for comparing a voltage to charge and discharge the capacitor with two different voltages, for generating a signal to operate on-off of the semiconductor switch in accordance with a result of a comparison; a first charging circuit to charge the capacitor based on a voltage applied to the coil; and a discharging circuit to discharge the capacitor. The first charging circuit has a first resistor and at least one compensating circuit connected in parallel with the first resistor; and a resistor and a Zener diode are connected in series in the compensating circuit. |
申请公布号 |
US2014092515(A1) |
申请公布日期 |
2014.04.03 |
申请号 |
US201214116240 |
申请日期 |
2012.08.02 |
申请人 |
MORITA AKIRA;TAGUCHI TAKAHIRO;FUJI ELECTRIC CO., LTD.;FUJI ELECTRIC FA COMPONENTS & SYSTEMS CO., LTD. |
发明人 |
MORITA AKIRA;TAGUCHI TAKAHIRO |
分类号 |
H03K17/687 |
主分类号 |
H03K17/687 |
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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