Dimming control method and circuit thereof
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United States of America Patent
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Jan 2, 2018
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N/A
app pub date -
Dec 30, 2015
filing date -
Nov 5, 2015
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Abstract
A dimming control method and circuit thereof are provided. After receiving a TRIAC signal with at least one positive/negative half cycle waveforms, the turning points of the positive/negative half cycles are detected to obtain the conduction angles of the positive/negative half cycle waveforms. Then, a pulse width modulated signal with the symmetrical positive and negative half cycle waveforms is rebuilt to control a lamp. Therefore, the disclosure can solve the flickering issue of the lamp.
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