发明名称 ELECTRONIC BALLAST
摘要 An electronic ballast for driving a gas discharge lamp includes a rectifier, a valley-fill circuit, an inverter having first and second series-connected controllably conductive device having complementary duty cycles, a control circuit for controlling the controllably conductive device, and an independent cat ear power supply to provide power to the ballast control circuits. The result is a ballast having substantially improved THD, and current crest factor. In a preferred embodiment, the valley-fill circuit includes an energy storage device that stores energy in response to a controllably conductive device. In an especially preferred embodiment, the controllably conductive device of the valley-fill circuit is also one of the controllably conductive devices of the inverter.
申请公布号 KR100880009(B1) 申请公布日期 2009.01.22
申请号 KR20037016779 申请日期 2003.12.22
申请人 发明人
分类号 H05B41/28;H05B41/282 主分类号 H05B41/28
代理机构 代理人
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