Advice on LED Direction

Discussion in 'The Projects Forum' started by Jkuehn, Feb 28, 2014.

  1. Jkuehn

    Thread Starter New Member

    Feb 28, 2014
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    First off, this is the best forum out there!

    I have a project I doing that I'm doing requires 20 LED (5050, 6pins). I'm running this off of two 3v batteries = 6v. My question is this, what is the best way to do this series or parallel? Also I've been having troubles figuring out the number of resistors and size to be used. Any help would be greatly appreciated. Thanks
     
  2. bertz

    Member

    Nov 11, 2013
    238
    31
    In order to calculate the value of the resistors, you need to know what is the forward voltage drop, check the data sheet for this info. What is a 3 volt battery? Are you using LIFE, LIPO, alkaline or rechargeable? What is the mAh rating of the battery?
     
  3. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
    4,770
    970
    With only 6V.. chances are you can at best do 10 parallel strings of 2 in series on each string and you will need a resistor for each series string.
     
  4. bertz

    Member

    Nov 11, 2013
    238
    31
    Like this:
     
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