发明名称 |
Identification of a defective filament in a fluorescent lamp |
摘要 |
Control of delivery of current through one or more discharge lamps. Methods include alternately switching on and off switching elements that control a fluorescent lamp, in response to receiving input, until the brightness of the lamp decreases to a threshold. Further, methods include providing control signals at complementary duty cycles to further decrease the brightness and alternating the duty cycles of the signals applied to the filaments of the fluorescent lamp.
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申请公布号 |
US7915896(B2) |
申请公布日期 |
2011.03.29 |
申请号 |
US20080125897 |
申请日期 |
2008.05.22 |
申请人 |
MARVELL INTERNATIONAL, LTD. |
发明人 |
NOTOHAMIPRODJO HUBERTUS;PITIGOI-ARON RADU |
分类号 |
G01R31/00;H05B37/02 |
主分类号 |
G01R31/00 |
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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