发明名称 |
Fluorescent lamp ballast with regulated feedback signal for improved power factor |
摘要 |
A fluorescent lamp ballast having improved power factor by providing high frequency signals fed back to the a.c. side of the ballast rectifier. The feedback signal is regulated by limiting or reducing the voltage gain of the feedback signal based on the level of the unregulated feedback signal or rectified signal, respectively.
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申请公布号 |
US5387848(A) |
申请公布日期 |
1995.02.07 |
申请号 |
US19930076566 |
申请日期 |
1993.06.14 |
申请人 |
PHILIPS ELECTRONICS NORTH AMERICA CORPORATION |
发明人 |
WONG, JOHN M. |
分类号 |
H02M1/00;H02M1/42;H02M7/5383;H05B41/28;(IPC1-7):H05B41/29;H05B41/36 |
主分类号 |
H02M1/00 |
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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