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Paralell LED

Started by playpunk, March 27, 2015, 05:41:17 PM

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playpunk

I need to run two LED's off of Ben's detour optical bypass scheme for a multi pedal. I know that I will need to use a smaller resistor than 4.7k, but I can't figure out this calculator:

http://www.hebeiltd.com.cn/?p=zz.led.resistor.calculator

Is this what I should be looking at or am I not in the right ballpark.
"my legend grows" - playpunk

playpunk

So I did some more googling - for anybody who is interested.

I assumed a 3.4 v drop across the White Waterclear LED's, and designated 15MA per LED for the calculation. That led, according to that calculator, to a 330ohm resistor for R1 in the Detour optical scheme.

If this is wrong, please let me know!
"my legend grows" - playpunk

electrosonic

I would give each led its own current limiting resistor. If you use one resistor and parallel the leds I doubt they will share the current equally.

Andrew.

playpunk

Quote from: electrosonic on March 27, 2015, 07:58:10 PM
I would give each led its own current limiting resistor. If you use one resistor and parallel the leds I doubt they will share the current equally.

Andrew.

I don't really want to give each one its own CLR - as there are 4 LED's in a dual drive enclosure. I also would prefer to use a daughter board on the stomp for ease of wiring the multi.
"my legend grows" - playpunk