Two-wired LED light adjusting system
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United States of America Patent
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Dec 4, 2012
Grant Date -
Jun 23, 2011
app pub date -
Dec 22, 2010
filing date -
Dec 22, 2009
priority date (Note) -
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Abstract
A two-wired LED light adjusting system, for controlling the luminance adjustment for a LED lamp module. The light adjusting circuit includes a phase modulating circuit, a LED driving circuit and a controller. The phase modulating circuit generates a phase modulating voltage. The controller detects the phase modulating voltage of various waveforms. When the controller detects the phase modulating voltage of different waveforms, the controller controls the LED driving circuit to enable the LED lamp module to emit light of different luminance according to waveforms of the phase modulating voltage.
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