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Author Topic: Any electrical people out there  (Read 502 times)

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slandis3

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Any electrical people out there
« on: March 05, 2009, 12:58:00 »
I got a bunch of blue 3v leds. i need to know what size resistors i need to be able to run it with 12v.  thanks
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Offline ohioreef

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Re: Any electrical people out there
« Reply #1 on: March 05, 2009, 13:46:33 »
There is a website that has a calculator to determine the resistor size based on input voltage. Let me see if I can find it.
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Offline ohioreef

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Re: Any electrical people out there
« Reply #2 on: March 05, 2009, 13:48:56 »
Try this one:

http://www.ngineering.com/LED_Calculators.htm

You need to know input voltage, LED voltage and LED current rating.
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Offline jeblin

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Re: Any electrical people out there
« Reply #3 on: March 05, 2009, 13:57:35 »
Here's one as well.... http://ledcalc.com/

Hope it helps!
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slandis3

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Re: Any electrical people out there
« Reply #4 on: March 05, 2009, 13:57:38 »
thanks worked great
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