Hi... i am trying to understand basic electronics so i don't need to only copy projects i see on the internet, but also be able to create my own. So, my problem is that i am trying to figure out how to find the right Resistor to use with LEDs. I know about the Ohm's Law: V=IR and i though i shoul…

Simple question about resistor for LED

John_Rae July 1, 2013, 7:45am 3

"right?" Wrong !

Your simple equation ignores the voltage dropped across the LED - as Nick details.

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