发明名称 |
Pulse controllers |
摘要 |
A controller for a series electric motor is described of the type comprising means for applying D.C. pulses to the motor and means for controlling the mark/space ratio of the pulses applied to the motor. The current through the motor is sensed and the maximum mark/space ratio which may be applied to the motor is reduced when the motor current is below a predetermined limit to avoid overspeed in light load conditions.
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申请公布号 |
US4119898(A) |
申请公布日期 |
1978.10.10 |
申请号 |
US19760753137 |
申请日期 |
1976.12.22 |
申请人 |
CABLEFORM LIMITED |
发明人 |
MORTON, JOHN;STEVENS, KEITH DRUMMOND |
分类号 |
H02P7/29;(IPC1-7):H02P5/00 |
主分类号 |
H02P7/29 |
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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