Joule Thief

[jadaro2600]

@jadaro

In my mk8 on one coil a 470 uf reaches 35 volts in 3 sec.

Have you a link to some place which sells both ferrite cores and magnet wire?

[Mk1]

@jadaro

I don't have a supplier for toroid yet. mag wire radio shack has them in us , btw where are you , but first look for any toroid (recycle a old pc that should do), i will show you how i do it then you will have a idea of what to do with the copper project you got , i believe you should follow your think there . but i feel you should try ferrite first .

Mark

Any body interested ?

[resonanceman]

Yeah, I am concerned too!

@Gary,
I made 2 pics for you from Bre Petit's pdf on the joule thief from makezine. The schematic is the one we have been using since I posted it before, but since I cannot find it I am reposting it. The other is the 2 photos of the wire details when finishing winding the toroid and putting it together.
I could possibly post the pdf, but it may be too big, so here is this. I hope this helps.

jeanna

Thanks Jeanna 
your links  show me that I am  doing  it  right .....but no  light  yet .


gary .

[Mk1]

@all

Btw what i have is to big for me , lol i need your help .

[Mk1]

Thanks Jeanna 
your links  show me that I am  doing  it  right .....but no  light  yet .


gary .

@Gary

There is a list of to thing that could go wrong , first the led is not connected the right way , second npn and pnp transistor don't work the same quick test revese the battery connect plus on the minus side check the bout ways . If still nothing one of the coil is wrong so exchange the ends of the coils .Check led bout ways.

Lets get that fixed !

Then to serious business .

Mark