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Originally Posted by RobertSmalls
When I saw Edison screw LEDs at Sam's Club (the kind that fit in a light bulb socket), I was excited. Then I crunched the numbers on lumens per Watt, and I was disappointed. They're a little more efficient than CFL's, but not much.
My GE EnergySmart 13W bulbs are rated for 825lm, or 63lm/W.
The white StarLED is rated for 87lm/W, before the 120VAC->3.3VDC power supply and regulator.
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Ditto, I have yet to see LED far surpass CFL efficiencies. Also, work is still being done with CFLs to increase efficiency further.
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LEDs have a big advantage if you only need a few dozen lm, though. I'm using a 12V T10 automotive LED to light my desk at night, which saves me from having to turn on a 13W CFL. It's powered by my PC.
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Thats a great idea. How did you tap into the 12V supply? Got any pictures of the setup?
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Last edited by Daox; 09-09-10 at 07:44 AM..
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