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Ming the Murphyless
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      11-09-2008
I need to wire four white LEDs to run off a 12v dc supply (regulated).
The Vf is 3.2-3.6 The calculation gives a resistor value of 220 ohms for
2 LEDs in series. Can I wire all four in series without using a
resistor or are there good reasons for having it? The LEDS will be lit 24/7

TIA

Bob
 
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J
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      11-09-2008

"Ming the Murphyless" <ming@*merciless*littleold.me.uk> wrote in message
news:bCERk.133901$(E-Mail Removed) ...
>I need to wire four white LEDs to run off a 12v dc supply (regulated). The
>Vf is 3.2-3.6 The calculation gives a resistor value of 220 ohms for 2 LEDs
>in series. Can I wire all four in series without using a resistor or are
>there good reasons for having it? The LEDS will be lit 24/7
>
> TIA
>
> Bob


http://www.llamma.com/xbox360/mods/H...20an%20LED.htm

J



 
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