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my first ever LED saber, and im building it.
I want to run a Lux rebel star green on 4 AAAs what resistor do I need and I kno there's a resistor chart thing on the website but it only says Lux lll's and v's not rebels, so could anyone help me out here?
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Youngling
From the Lux Rebel Product info in the store: Green 166lm @ 700mA 3.4v
4 AAA's is 1.5x4 = 6v
Taking that information and using the search function to find This Sticky
R= (6v-3.4v)/.7A
R = 3.714 ohms
Doing the math.
So you need a resistor that at least matches that to not fry your LED.
The calculator gives the same results.
But why use a resistor? Buck Pucks are more efficient. I would use the 4wire 700ma buckpuck if I were you. It's a bit more expensive but it is much more efficient.
Last edited by Zzan; 08-22-2011 at 11:30 AM.
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Jedi Master
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