Thread: MMP Problem
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BrianG
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01.12.2011, 11:11 PM

Quote:
Originally Posted by Pdelcast View Post
You know -- the LEDs that are on-board the MMP are driven by the BEC ... and they are 3P with 470 ohms on each.
Yeah, but that's around 7mA each. and light uniformity probably isn't a big concern. I was playing around with similar white high brightness LEDs a while back (making a 80 LED bench light) and a common resistor can get largish if enough LEDs are used in parallel at 20mA each. In this case, only 4 are used, but that still requires around 0.5w resistor. Also, when used as headlights, the brightness should be uniform for best appearance, and a common resistor didn't give good results in my playing around. I ended up making 4 strings of 20 LEDs in series and using a simple CC circuit for each chain.

By the way, I'm not trying to sound argumentative, it just might sound that way.

Last edited by BrianG; 01.12.2011 at 11:12 PM.
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