(New to building sabers) Need help with finding the right resistor!
Hello, I am new to the saber scene. After testing my first PVC saber today, the resistor I was using had burnt out. I am running the saber off of two Xtar 14500 mAh 3.7v batteries, along with a Royal Blue Luxeon rebel led. The resistor that was in the saber was a 2ohm 1w resistor (Which was clearly the wrong resistor for this setup). So, I was wondering what would be the correct resistor for this setup?
I'm a kid, I don't know any better.
This video should help
http://forums.thecustomsabershop.com...ing-my-Resitor
Sorry, but all that did was confuse me.
I'm a kid, I don't know any better.
It's the Watts I don't understand how to calculate.
I'm a kid, I don't know any better.
Have you read this yet: http://forums.thecustomsabershop.com...e-to-Ohm-s-Law
Got a question? Start Here. Have you tried the Thread Index yet? Most questions can be answered there.
I have, but the equation on that post was kind of confusing and I don't think I did right.
I'm a kid, I don't know any better.
What's the battery configuration, 3.7v, or 7.4v? If you're using them in a standard 2-AA holder, then you probably gave your set up twice the voltage you figured it for.
Got a question? Start Here. Have you tried the Thread Index yet? Most questions can be answered there.
Nevermind, I got a 5.6ohm 10w resistor. Works good now.
I'm a kid, I don't know any better.
Using a 7.4 vs a 3.7 for a single LED is a big waste. There is no benefit at all for using more than the forward voltage of the LED and all you will do is create a bunch of heat from the large resistor needed. You would be better off getting a AA dummy cell and only using one battery.
Tim
The Custom Saber Shop
Keep the resistor though?
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