Joule Thief

[Pirate88179]

@ Koen:

My modification to the Fuji AA board is different from Jose's.  I hooked it up just as you see in the pics I sent you.  It is not all that different, but Jose says on his site (In the Q&A section) that his will only light a 4 watt bulb and no larger.  So, by accident, I must have a little better hook-up design or my transformers are a better variety than his.  Gadgetmall has made a major improvement in the Fuji wiring.  I have not had a chance to replicate it as of yet but, I will.  If you already did yours like Jose, you might skip my way and go right to what Gadgetmall is doing.  This is fun stuff.


Gadgetmall:

Fascinating experiments with the caps.  I was a believer in the Young Effect from the beginning.  I even recommended that he name it that.  Others say it can't won't work and we are measuring wrong but, I have seen it for myself.  Nice work!


Bill

[xee2]

@ slayer007

Here is a photo of coil.

[Pirate88179]

Xee2:

That looks lit up to me.  Excellent work!!!

Bill

[gadgetmall]

@ gadget.......

i did this with your simple mod as well and it poorly lights mf cfl only for 15 min or so.......   hummmmmmm

sure i found the sweet spot ....  as the bulb gets brighter than falls out if i go to far ......

not near full brightness of the cfl .... why?... my cap says 68 it is a brown creamic a small one ....   my pot is 10k....  put this where the resistor should have gone ...

no diode ....  on the out ....  all else is the same is this YOUR MOD??  OR IS THERE SOMETHING IM MISSING....   tryed cap across battery many diffrent sizes ....  gets a tiny bit brighter ....   i could not notice a diffrance much between values of caps ......   tryed many ... from high uf  to low  uf ....   same results .... on the bulb   


i dont know im only useing a 9w cfl..... 

William .It must not be either a fugi  or if its a fugi that came with an aaa battery then i hear they are weaker and i don't have one to try and mod . Sorry . I would check the OUTPUT voltage with a DIODE on your LEAD and see what the voltage is if you can get a reading . and then check the current draw with one battery  and tell me the measurements ..It might be that some of them come with a weaker transistor or maybe  a different transformer ratio . Its possible some of the weaker ones we can replace the transistor with a different transistor or even a Darlington i will see if we can fix it .

[slayer007]

@Xee2

Thanks for the reply.
Very Nice job.
I'm getting some big 3 inch toroids today.
I was going to make a wind like that but with a secondary on it.

Edit.
I just tried a neon on mine to it light up bright allso.
I was suprised it light up.
I still like the way you wound yours I'll be tring that later today.