Second Stage Joule Thief Circuits

[resonanceman]

this is awesome ... as usual gary!

: )

can you post a picture ... i will build it ... i have a bunch of those laying round ..

ist!

IST

I tried to  add some pictures ......I kept  timing out

I  also tried  emailing  them  to Jeanna ......hopefully she  will  post them for me


I think it is working out  really well.

On my 3rd test  coil   I  hooked it up .... adjusted the pot  to give me  2.5 V  across  the bridge  without the cap hooked up ........then I connected the cap .
Last time I checked it was  going up  .0018 per min

I am making  a bigger coil right now ...... 

gary 

[jeanna]

I did gary... look up about 6 posts by now.

Please explain how you wired them in parallel.
If I did that there would be wire ends everywhere.

Or,
Do you mean that in the end, you put the wires together all wires at one end together and all wires at the other end together?

jeanna

[gadgetmall]

IST

I tried to  add some pictures ......I kept  timing out

I  also tried  emailing  them  to Jeanna ......hopefully she  will  post them for me


I think it is working out  really well.

On my 3rd test  coil   I  hooked it up .... adjusted the pot  to give me  2.5 V  across  the bridge  without the cap hooked up ........then I connected the cap .
Last time I checked it was  going up  .0018 per min

I am making  a bigger coil right now ...... 

gary

Gary you get your bcap ?

[gadgetmall]

Gary:

Talk to Jeanna as she obtained a quote from a CA distributor on the exact toroids I just received as free samples. (OW48613TC)  These are 3.375" OD.  The girl I spoke to at magnetics said they had thousands of these in stock and I can get as many as I need, I just have to go through a distributor or, order more through the free sample program.

Maybe after Christmas, I can put up the minimum order and then make them available to the folks here as long as my shipping costs and expenses are covered, or anyone else can. 

Check with Jeanna to make sure I did not misunderstand what she said but I believe this info is correct.

Bill     PS  I told them I wanted these for a transformer, I did NOT mention the word Joule Thief or energy experiments to her.  This may make a difference.

Bill I got the big 140 inch from Magnetics . biggest one they had ., Its killer . 6 winds and one turn primary lights up leds In fact it is so strong i just burned out three 2n3904's and two bright leds. Good god . 6 turns is too many appearently . Burning them up on a normal jt side . whats with this  ?

[resonanceman]

I did gary... look up about 6 posts by now.

Please explain how you wired them in parallel.
If I did that there would be wire ends everywhere.

Or,
Do you mean that in the end, you put the wires together all wires at one end together and all wires at the other end together?

jeanna

Jeanna

Did I say I wired  all the toroids in parrallel ?
I didn't mean that
The  toroids  are in series .
The  blue  green and orange wires are all  single pieces  in the first picture .

I think what I meant to say is that when I took volltage readings  I read  both  conductors of each  twisted pair  ..... I could  have left them  connected in series  ......center taped ....as I  had them to use them as a  primary

If you look at the  first picture  you can see pretty much how I did it

I did all 3 windings on the  first  toroid .......then I put all the wires through the next  toroid .
I then wound the blue wire  because it has more windings .......then the orange  then the green 
the  green I had to pretty much  work it through the crack  between the toroids ....it is  getting pretty tight  by then .

For some  it might be easier  to wind the toroids  separately  then  sollder them together ..... for me it is easier   to wind  them all  together .


The  one in the 3rd picture  has been doing pretty well ........  It is at 1.69V now ......it has averaged  .0156V a min over the last 2 hours .

I am not going to let it  go much longer ......I am almost done with my next version .

gary