发明名称 |
Fluorescent dimming ballast |
摘要 |
A dimmable ballast and methods are presented in which the operating frequency of a self-oscillating inverter is controlled according to a sensed lamp current for dimming control or cathode heating, and an AC bus voltage of the inverter is controlled to be at or below a voltage threshold value to prevent over driving operating lamps when one or more lamps are being replaced. |
申请公布号 |
US8212498(B2) |
申请公布日期 |
2012.07.03 |
申请号 |
US20090486086 |
申请日期 |
2009.06.17 |
申请人 |
NERONE LOUIS R.;GENERAL ELECTRIC COMPANY |
发明人 |
NERONE LOUIS R. |
分类号 |
G05F1/00;H05B37/02;H05B39/04;H05B41/36 |
主分类号 |
G05F1/00 |
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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