Dimmable AC driven LED illuminating apparatus

Dimmable AC driven LED illuminating apparatus

  • CN 104,519,643 A
  • Filed: 10/08/2014
  • Published: 04/15/2015
  • Est. Priority Date: 10/04/2013
  • Status: Active Application
First Claim
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1. a tunable optical AC driving LED lighting apparatus, comprising:

  • Dimmer, receive AC electricity and according to select light modulation extent control receive AC electricity with produce and export controlled AC electricity;

    Rectification unit, receives the controlled AC electricity from dimmer output and carries out full-wave rectification to produce and outputting drive voltage to controlled AC electricity;

    Light modulation degree detecting unit, receives driving voltage to detect the light modulation degree of selection and the light modulation degree signal that arrives of output detections;

    One LED group to the n-th LED group, comprises one or more LED respectively, wherein, n be equal to or greater than 2 positive integer;

    LED drive module, judges the voltage level of driving voltage, and the order controlling LED group to a n-th LED group according to the voltage level of the driving voltage judged drives and performs constant current control based on light modulation degree signal to LED drive current,Wherein, described LED group to a n-th LED group receives driving voltage sequentially to be driven according to the control of LED drive module.

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