Skip navigation
TechXchange
Digi-Key TechXchange Communities > Projects and Designs > Discussions
2498 Views 1 Reply Latest reply: Jun 18, 2014 11:18 PM by boborrob RSS
Currently Being Moderated

Jun 12, 2014 9:12 PM

Power Supply for a LED Cluster Circuit

Hi Guys,

 

So I'm working on a project that requires a lot of LED lights and right now I have this layout. 5 LEDs are connected in parallel, we'll call that a cluster. Then there are 12 clusters connected in series, lets call that a Group. Finally I have 2 Groups in Parallel.

 

I have attached the datasheet of the LED.

 

Now, the problem I have is how to power the circuit. Could anyone have any suggestions on what PS best be used in this situation. Now I have to mention that this was not my layout, and I have been told before that putting LEDs in parallel is not good due to the possibility of one LED hogging the current.

 

What do you guys think? thanks!

  • boborrob Novice 35 posts since
    Apr 4, 2014
    Currently Being Moderated
    Jun 18, 2014 11:18 PM (in response to JohnDavis)
    LED Cluster powersuuply

    hi there!

    to start, you didn't attach the datasheet for your led. Anyway, I found this PS that you might be able to use. I attached the datasheet of the powersupply, you might want to check that out.

     

    On your project design however, that PS might work, but putting LEDs in parallel is not a good idea, you are correct. This will cause one led to eat all of the current and will cause it to burn out first and resulting in an brightness imbalance. Since your lay out is a bit elaborate, I think that if you were to be able to implement it, the result would not be desirable since the brighness would not be uniform throught. I believe that the design needs to be reconsidered.

     

    I found this site and it is actualy a pretty good guide on how to properly light leds.

     

    Good luck on your project,

More Like This

  • Retrieving data ...

Bookmarked By (0)

Legend

  • Correct Answers - 4 points
  • Helpful Answers - 3 points