EER Joule Thief using an earth battery to start a joule thief.

[freepow]

@ Jeanna, I Have tried your idea on reducing turns etc. LED would not light, so I went back to my normal Bif winding and LED lights...

At least I can now make (garden lights) LOL,  with 1x EER  and free power too !

But I still am trying to get LED brighter, then use many to light house.

[jeanna]

Jeanna,

I guess I will order some 6T6T toroids.  Do you any suggestions for a place to order from?

I have no secondary on my current joule thief.  Here is a video showing my current setup: http://www.youtube.com/watch?v=pF4D_oj_S6c

Please let me explain,
You already have a toroid on your joule thief, I believe.

The way you make a secondary for it is you wind  30 turns of mag wire, (then remembering to sand the ends off) you then connect the ends to the ends of a led.
There is often a polarity and so if it doesn't light one way try it the opposite way.

Please try this now, if there is still daylight,  and let me know.

thank you,

jeanna

Bill,
It can go either way, but everybody interested in both looks here.
Plus it was in the EB arena where it was suggested.
Those only interested in JT don't bother to look here.
(do you want to moderate another thread?  )

edit
Lasersaber,
It seems you have a LOT of turns on your toroid already.
I am not sure there is any place free for a secondary.
Please let me know the specs of what you have made there.
thanks,
j

[freepow]

@ Jeanna

I got a scope shot of my 1x EER running a Joule thief with 11,11 turn Bif + 30 turn secondary = 5.6 volt spikes and a frequency of 909 khz.

[jeanna]

Wow, those are amazing numbers.

I assume this is still with no base resistor. .....fantastic.

Your frequency is high and you can use that to make the lights if you can get the volts higher.
The easiest thing to do now, is to make as many more turns as possible. edit: I mean on the secondary.

If I were doing this, I would add 10 at a time and test  after each addition.

cool,
another thought is...
If the permeability of your toroid is too low for what is happening, you will need more turns.

So, can you add as many as 30 more turns in your toroid?

jeanna

[lasersaber]

Jeanna,

I have 22 turns on it.  I think I could tighten them up and have room for a secondary.  I did try powering this with just 11 turns and it worked fine.