Control of delivery of current through one or more discharge lamps
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United States of America Patent
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Nov 16, 2010
Issued Date -
N/A
app pub date -
Oct 9, 2008
filing date -
May 22, 2007
priority date (Note) -
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Abstract
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. Methods also include identify parameter sets stored in memory to operate fluorescent lamps.
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