Joule Thief

[innovation_station]

 

hey guys i was just kinda wondering if i could ..... lol

well take where i hook up the leds .... and run it through my coper / steel bifillar coil core ... then hook it up to the leds   what will be the result?

makes me think OTTOS TEST .... 

ist!

i was also thinking of droping a neo the other side of the jt  winding on my garden wire core unit

[jeanna]

@xee,

I may be missing something in your answer.

It was the amperage into the system that surprised me. Having fewer turns of the bifilar primary seems to have caused the amperage to be 50% higher. This is a big increase.

It was 23mA or so with the 11 turn bifilar,
and this was 33mA with 6 bifilar primary turns.

As far as getting 1.09v across the single turn secondary is concerned, I think that is in line.

Thanks for your explanation. I will study what you said some more.

EDIT:
It is very clear. thank you.

jeanna

@IST

So, could we be making our joule thiefs around a straw?

I made a big order of various ferrite toroids today. Maybe I didn't need to!?!

What are you wrapping these around for your air core, please?

jeanna

[Light]

“Bunch of thieves” :)…One jt powering another…

[xee2]

@ jeanna 


I guess I misunderstood what you were saying. I was thinking that you needed to increase the current from the battery with fewer turns in order to get the same output from the secondary. That has been my experience.  I am also surprised that there is such a difference in current just by reducing turns on the JT coils. At the moment I can not think of any theoretical reason for that to happen.

[xee2]

@ Light

Nice photos. Thanks for posting them It looks like you have been doing a lot of experimenting.