High watt LED Project

Discussion in 'The Projects Forum' started by keaster, Sep 5, 2013.

  1. keaster

    Thread Starter New Member

    Apr 28, 2013
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    I'm working on a project using a cluster of 3x3Watt RGB LED's. I found this simple CCS http://www.instructables.com/id/Circuits-for-using-High-Power-LED-s/ to drive high watt LED's of single color and it works great, so I built a total of 3 to drive a 3watt RGB, now I want to connect 3 RGB's would I need to have 9 CCS or can I drive each color from 1 CCS? I read that when controlling current its best to connect in series but I can't with a common anode RGB.

    Any ideas?
     
  2. #12

    Expert

    Nov 30, 2010
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    Can you post a schematic of the circuit that you used?
    How much voltage do you have available?
    How many volts and amps does a 3 watt LED use?
     
  3. wayneh

    Expert

    Sep 9, 2010
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    I don't see a way that you don't need 9 CCSs. Maybe RGB LEDs are not a good choice for your project.
     
  4. keaster

    Thread Starter New Member

    Apr 28, 2013
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  5. #12

    Expert

    Nov 30, 2010
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    Put a few LEDs in series and use one regulator to supply as many as you can, as long as the voltage needed for the LEDs is less than 11.2 volts.

    The drawing you posted looks just right.
     
  6. wayneh

    Expert

    Sep 9, 2010
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    #12, he's got 3 LEDs total, and each is an RGB with a common anode.
     
  7. #12

    Expert

    Nov 30, 2010
    16,247
    6,744
    Ah...you mean the drawing does not account for the number of leads on each LED. Right?

    Something like this except this circuit gives no control over individual brightness?
     
    Last edited: Sep 6, 2013
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