Looking for post, led drive crt and image

[amdx]

Some months ago someone posted an LED driver circuit
that ran on 1.5v. It had a very small toroid inductor and a few other parts,
it was all mounted together with a transistor and led. I seem to recall two
images, one with a single led and one with two leds.
Anyone have a lead to that post?
Mike

 

[Henry Kiefer]

Some months ago someone posted an LED driver circuit
that ran on 1.5v. It had a very small toroid inductor and a few other parts,
it was all mounted together with a transistor and led. I seem to recall two
images, one with a single led and one with two leds.
Anyone have a lead to that post?
Mike

http://www.emanator.demon.co.uk/bigclive/joule.htm



- Henry

 

[amdx]

http://www.emanator.demon.co.uk/bigclive/joule.htm



- Henry

Thanks Henry, that's not the one I remembered but it has
the info I wanted.
Mike

 

[JeffM]

Some months ago

The one I found was more than just *months*.

someone posted an LED driver circuit that ran on 1.5v.[...]
Mike

http://groups.google.com/group/sci....q=LED+1.5-V+L1+ingroup:sci.electronics.design
http://groups.google.com/group/sci....LED+1.5.V+*-*-*-*-*-*-gif+zz-zz+qq+below.7VDC

 

[linnix]

Thanks Henry, that's not the one I remembered but it has
the info I wanted.
Mike

As another poster here will tell you, this will kill your 5 cents
transistor over time. Just make sure you don't reuse the transistor.

 

[ehsjr]

Some months ago someone posted an LED driver circuit
that ran on 1.5v. It had a very small toroid inductor and a few other parts,
it was all mounted together with a transistor and led. I seem to recall two
images, one with a single led and one with two leds.
Anyone have a lead to that post?
Mike

That may have been the one from Quantstuff.
He had it in a pumpkin, instead of a candle.
I have a copy which I can E to you, if you
want. He asked me to post the one I had
with two LEDs - that might be the two LED
one you are thinking of.

Ed