Joule Thief

[Pirate88179]

@ Jesus and Groundloop:

Thank you both very much!!!  I knew I was missing something.  I can actually draw pretty well freehand, but with my mouse....forget it.  It usually ends up looking like something someone did while drinking heavily. This was very helpful.

Bill

[electricme]

@ bill,
WOW, this forum is rockin along, I go away for the weekend and turn up on monday and we are 5 pages further along.
Awsome

@ groundloop
Thanks for the circuit you drawed up, you did a great job with it, thats just how I imagined it.
For those reading, it is on page 18 about midway through.
Now I had better go a make it hadnt I!!!

Now groundloop, what say we make one that is 3 phase, just to up the power if thats possible ha ha.

I am dum struck with 1.5v AA cell driving a 20W fluro tube, blown away in fact.
I have a few old reject scanners here, going to get the mini-mini fluro out of them. 

At all, I ordered a frequency counter, got to pick it up end of this week or just before xmas.

I had a very lucky find on late friday afternoon, visited one of the local dumps, someone had thrown away a 2 channel DEKA MAGNA Theraphy Unit 2.4 with digital display, had a very quick bo-peep inside it. This seems to be wired up very similar to Stan Mayers 555 HHO pulser to make fuel outa H2O. Found 2 big electyrolitics had come away from the main PCB, so it may work.

0110 = Front panel L & R channel controls Digital display in middle
0109 = The guts of the matter
0111 = Frequency board, the 2 elytrolytics are bridged together, one pigtail is metalled fatagued away off the pcb.
0112 = back of the Freq/Intens range switches, if you look at SM patient circuit, he has 3 ranges to chose from, here there are 11positions, hmmm

[xee2]

@nievesoliveras

You might want to temporarily add an LED between collector and emitter to show if circuit is oscillating, By shorting out the red and white leads of transformer T2 you will have a standard Joule thief circuit except for resistor value (might use 1K resistor when doing this so as to not zap LED).

[nievesoliveras]

@xee2

First I made a joule thief. Then I made sure that it was working properly.
Then I added your circuit . I put the led across emitter and collector and shone.
But at the green and blue terminals there was, with the led connected, only 39v ac.
Without the led across gave 54v ac.
It does not even light a neon bulb and spends the battery real fast.

Jesus

[Freezer]

This circuit I have seems to be different than the one I got from the site.  I drew it from the top view looking down, as I don't know the correct orientation. I desoldered the parts and put them on a different one for a cleaner look.