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Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Chih-Jen Teng0
Date of Patent
January 13, 2009
Patent Application Number
11790002
Date Filed
April 23, 2007
Patent Primary Examiner
Patent abstract
The present invention discloses a power control circuit for adjusting light, which adopts both frequency modulation and amplitude modulation for the control and starts using the amplitude modulation control after the frequency change exceeds a predetermined limit range, such that the voltage and frequency for driving the lamp set fall within a range acceptable to the lamp set and minimize the effect of frequency interferences.
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