4 prong high output LEDS

Discussion in 'General Electronics Chat' started by 03GTS, Mar 24, 2007.

  1. 03GTS

    Thread Starter Member

    Jan 5, 2007
    12
    0
  2. mrmeval

    Distinguished Member

    Jun 30, 2006
    833
    2
    The datasheet shows the cathode, I would assume the other pins are the anode. For that particular device I'd recommend a current regulator.

    Just an example, it's easy to get and can be wired as a current regulator. There are several variants in this datasheet.
    http://www.hep.upenn.edu/SNO/daq/parts/lm317.pdf

    I think that unreasonably lousy datasheet is saying you need 40 milliamps but start with 20.
     
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