First bicycle headlamps and now an under shelf light.
I'm starting to find white LEDs that run from 2x AAA cells - can't find any boost circuit at all.
Anyone got a link to a data sheet that explains this?
Thanks.
Low voltage white LEDs.
May 11, 2017
4 Replies
The latest white LEDs seem to drop about 2.6 V or so at lower current. So, just get some big LEDs and run them at reduced current, and they should run off 3 V from Alkaline cells. Likely they would be real dim and fade quickly on NiMh cells.
Jon
Trying that would probably tell me something I didn't know.
There's a shelf light laying about on my desk - so far I just couldn't be bothered charging a couple of AAA cells to try.
I built a few fluorescent retrofits with strings of 20 1 Watt LEDs, so I had to know a bit about the LED characteristics to do it right.
Jon
The ones I have just turned up on the market - I was curious how they got away with running them off 2 cells and no boost circuit.
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