发明名称 |
In-rush current controller with continuous cycle-by-cycle control |
摘要 |
An in-rush current controller for a mains power rectification circuit including a fill wave rectifier and a capacitor. A serial resistor suppresses in-rush currents. The controller includes a sensing circuit that controls a pair of silicon controlled rectifiers to cyclically shunt or isolate the resistor during normal operation. Thus, power is not dissipated by the resistor and undesirable heat is not generated during normal operation. The sensing circuit responds to abrupt rises in voltage (typical of in-rush current conditions) to inhibit turn ON of the rectifiers so that the resistor is not shunted or isolated at such times.
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申请公布号 |
US6297979(B1) |
申请公布日期 |
2001.10.02 |
申请号 |
US19990468311 |
申请日期 |
1999.12.21 |
申请人 |
PI ELECTRONICS (HONG KONG) LIMITED |
发明人 |
TSE MAN SING |
分类号 |
H02H9/00;H02H9/02;(IPC1-7):H02H7/125 |
主分类号 |
H02H9/00 |
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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