LIGHT EMITTING DEVICE
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United States of America Patent
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Issued Date -
Feb 6, 2014
app pub date -
Jul 25, 2013
filing date -
Aug 1, 2012
priority date (Note) -
Abandoned
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Abstract
A light emitting device is electrically connected to a three-phase AC power source and comprises three light emitting modules. The light emitting modules respectively receives three phase power sources of the three-phase AC power source. Each of the light emitting modules includes a light emitting unit and a control circuit electrically connected to the light emitting unit. Each of the control circuits controls the light output power of the corresponding light emitting unit according to the voltage variation or phase variation of the received phase power source, and the three light emitting modules are collectively kept a stable gross light output power.
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