发明名称 |
Speed control circuit for electric motors |
摘要 |
The speed control circuit comprises a full wave rectifier having its output connected to an adjustable D.C. voltage divider. A series circuit connected to an A.C. power source includes an electric motor and an anti-parallel connection of two thyristors. The gates of the thyristors are connected to the output of the voltage divider via separate trigger circuits each providing a different trigger voltage proportional to the setting of the voltage divider. In this manner one or both thyristors may be selectively activated and the electric motor can be driven with half the waves as well as with full waves of the power source.
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申请公布号 |
US4181876(A) |
申请公布日期 |
1980.01.01 |
申请号 |
US19780877350 |
申请日期 |
1978.02.13 |
申请人 |
KATO, KENJI;TANAKA, HARUHIKO |
发明人 |
KATO, KENJI;TANAKA, HARUHIKO |
分类号 |
H02P25/10;H02P7/295;H02P25/14;(IPC1-7):H02P5/16 |
主分类号 |
H02P25/10 |
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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