发明名称 |
Control apparatus for A.C. elevator |
摘要 |
A control apparatus for an A.C. elevator comprises resistances connected between an A.C. power source and a converter, a detection device to detect the build-up rate of the charged voltage of a smoothing capacitor, and control means to generate a signal for closing a contact interposed between the A.C. power source and the converter, when the output of the detection device is not greater than a predetermined value. The detection and control devices are preferably provided by a microcomputer.
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申请公布号 |
US4721188(A) |
申请公布日期 |
1988.01.26 |
申请号 |
US19870032541 |
申请日期 |
1987.04.01 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
ARAKI, HIROSHI;TANAHASHI, TOORU |
分类号 |
H02M1/14;B66B1/28;B66B1/30;H02M7/48;H02P27/06;(IPC1-7):B66B1/06 |
主分类号 |
H02M1/14 |
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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