发明名称 |
End of lamp life protection circuit with bi-level detections for the electronic ballast and method thereof |
摘要 |
The configurations of an end of lamp life protection circuit for a ballast and a method thereof are provided in the present invention. The proposed circuit includes a voltage-dividing circuit receiving an input voltage and outputting a first and a second divided voltages and a switch apparatus raising the first divided voltage when the second divided voltage is less than a first pre-determined threshold value and turning off the ballast when the first divided voltage is higher than a second pre-determined threshold value.
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申请公布号 |
US8378592(B2) |
申请公布日期 |
2013.02.19 |
申请号 |
US20100980449 |
申请日期 |
2010.12.29 |
申请人 |
DELTA ELECTRONICS, INC.;CHOU CHING-HO;LU YUNG-CHUAN;CHANDRA EDY;TSAI CHAO-WEI |
发明人 |
CHOU CHING-HO;LU YUNG-CHUAN;CHANDRA EDY;TSAI CHAO-WEI |
分类号 |
H05B37/02 |
主分类号 |
H05B37/02 |
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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