发明名称 |
SOLID STATE POWER CONTROLLER FOR DC PERMANENT MAGNET AND SHUNT FIELD WINDING MOTORS SUPPLIED FROM AN AC SOURCE |
摘要 |
A solid state switching circuit and power controller for permanent magnet and shunt field winding motors used in portable power tools and the like. The power controller employs a bidirectional thyristor triode and trigger diode for varying the current supplied to the motor armature, and a full-wave rectifier bridge to establish unidirectional current flow through the motor armature on opposite half cycles of the AC power supply. A resistor across the AC terminals of the rectifier bridge enhances control action under light loads.
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申请公布号 |
US3639822(A) |
申请公布日期 |
1972.02.01 |
申请号 |
USD3639822 |
申请日期 |
1970.05.11 |
申请人 |
CUTLER-HAMMER INC. |
发明人 |
HARRY W. BROWN;WALTER L. RUTCHIK;LAWRENCE J. RYCZEK |
分类号 |
H02P7/292;H02P25/10;(IPC1-7):H02P5/36;H02P7/58 |
主分类号 |
H02P7/292 |
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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