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Driving LEDs (Attn: Electronics Geeks) by MrTrick2007-06-03 19:31:26
  Possible circuit... by MrTrick 2007-06-03 20:33:55
LED Circuit #1

This assumes the RGB LED is common-anode, which I *think* is the case.

Given that a BJT (when not saturated) controls current flow, I think the base resistors could be chosen to allow 20mA to flow through each LED when the corresponding IC pin is set high.

[ Reply ]
    Yeah, something like that. (n/t) by Egaeus2007-06-03 20:48:12
      Any problems? by MrTrick2007-06-03 20:51:27
        No, actually, that's what I was going to by EnzoMatrix2007-06-03 23:51:27

 

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