Single driver for multiple light emitting diodes

Single driver for multiple light emitting diodes

  • CN 1,784,931 A
  • Filed: 04/22/2004
  • Published: 06/07/2006
  • Est. Priority Date: 05/07/2003
  • Status: Active Grant
First Claim
Patent Images

1. , a kind of led drive circuit (70,80) comprises:

  • Power supply (I S, V S), can be used for powering with first frequency;

    And First switch the LED unit (30-32,40-42), it comprises first, at least one LED (L11-LXY), described first, at least one LED (L11-LXY) can be used for the light in response to a LED electric current radiation first color that flows through this LED,The wherein said first switching LED unit (30-32 40-42) can be used for switching between first radiation mode and first disable mode with second frequency,Wherein, during first radiation mode, described first switches the LED unit, and (30-32 40-42) controls a LED electric current from described power supply (I S, V S) flow through described first, at least one LED (L11-LXY), and Wherein, during first disable mode, described first switches the LED unit, and (30-32 40-42) stops a LED electric current from described power supply (I S, V S) flow through described first, at least one LED (L11-LXY).

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