Most helpful to me. Thanks!
On Sep 19, 2011, at 12:14 AM, [email protected] wrote:
This almost belongs in an electronics group, but here goes: An AA battery obviously supplies only 1.5 volts, but LEDs need different voltages depending on their color- red wants 1.7 or so up to bright white, green, and blue needing 3.4 volts. You'll need to boost the battery voltage just to light the LED (or you could bite the bullet and use more batteries assuming there's room) and limit the current (usually with a resistor) to keep from burning up the LED (and draining the battery). Rather than write a long tutorial I'll refer you to Don Klipstein. He's a reliable authority on matters electrical/electronic and does this better than me anyway- http://donklipstein.com/ledd.html If you absolutely can't fit more batteries in, there's always the so- called "Joule thief": http://www.emanator.demon.co.uk/bigclive/joule.htm High-brightness LEDs will of course drain the battery fairly quickly so make the battery accessible for replacement. I'm assuming you can handle some light soldering? Hope that helped. Mark L. Fergerson
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