hey any1 wanna help me..
i got 2 2.0Volt leds...20mA's and i want to run them on my car which is 12Volt...what size resister do i need?
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E= I R (Voltage=Current times resistance)
12 = .04 x R
12/.04 = R
R=300 ohms
That's a series circuit.
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bit-tech.net or something used to have an LED calculator on it, would tell you exact resistance, and the closest standard value resistor. do a google search for bit-tech, its what i use.
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this useless post brought to you by the alcoholic known as LUNDiS
Wow, I was way off.....
Calculator....
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hey thanks....greatly appriciated
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