Ok, this one I have a feeling NONE of you will ever be able to answer. Myself included.
I have a "little" LED (read: indicator LED... not a Luxeon)... it's some random one that I don't know anything about.
Anyhow. It will light up with 3v alkaline. But a Li-Ion cell (even with a resistor)... will not light it up.
If you put it into an MR setup in order to use it as a little "glowy" LED... it won't work. If you apply 3v alkaline to it directly... it works fine.
Does anyone have anything to say about this?!??! It has to be hands down... the single most frustrating + TOTALLY ILLOGICAL thing I've ever seen. I mean... I'm DEAD F'IN SERIOUS... you guys know me: I'm not messing around. It's simple:
3v alkaline--you do +, you do - ... = lights
ANYTHING else--you do +, you do - ... even if you SIMULATE 3v by using a resistor... = it doesn't work
It's frustrated me for the past 3 hours, and I'm simply done screwing around with it. It's just an indicator I was going to add to a cheesy MR for God's sake. Geez. LOL! :P
EDIT: OK, WHAT THE BLOODY HECK IS GOING ON?!?!?? The positive current from the MR... is the negative current. Even though my meter reads it in reverse. I mean... it's crazy confusing right now. The Li-Ion cell I still don't understand why it doesn't power this LED. I even checked to see if the PCB was triggered. Holy moses... this is some WEIRD stuff...
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