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BrianG
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Location: Des Moines, IA
12.18.2008, 08:07 PM

Quote:
Originally Posted by lincpimp View Post
...I just need to find 5 white leds that have the correct resistors for use with 5v... Any ideas where to get those pre-assembled? I would rather not have to solder all of that up, and I have no idea what resistors to use...
White LEDs drop around 3.5v each, and you typically run LEDs at 20-25mA of current. So, (6v-3.5v)/0.02 = 125ohms. Resistors from 120ohm (21mA) to 150 ohms (17mA) will be perfect. Each one will need one of these resistors.
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