Solid States Devices > Joule Thief

Large Scale Joule Thief

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Foggy-Notion:
Forgive me if this has already been discussed elsewhere in the forum?
If so we can delete this and someone can direct me to that thread.

I'd like to know what the largest Joule Thief ever made is, if any know,
And would like to clarify if there are any size limits, and if so, why?

Basically, can one can be made to handle 30 ampres of 30 milivolts?
Such as the out put of a small N-machine?

I have every reason in the world to assume that if a Joule Thief works
in minature, than it works period, it is after all, working on a principle.
It is but a modified transformer.

MrMag:
The people in the joule  thief thread would be the best place to ask this. However, I think the limitation would be finding something that could switch 30 amps 5000 times or more per second

Magluvin:
My Soundstream car amplifier power supply pulses a toroid transformer with a primary of 3 turns of 3 16 ga wire in parallel with 4 mosfets in parallel at over 50 amps of 12v at 60,000 times a second. That just 1 phase of 2.

magluvin

resonanceman:

--- Quote from: Foggy-Notion on January 04, 2010, 11:34:23 PM ---Forgive me if this has already been discussed elsewhere in the forum?
If so we can delete this and someone can direct me to that thread.

I'd like to know what the largest Joule Thief ever made is, if any know,
And would like to clarify if there are any size limits, and if so, why?

Basically, can one can be made to handle 30 ampres of 30 milivolts?
Such as the out put of a small N-machine?

I have every reason in the world to assume that if a Joule Thief works
in minature, than it works period, it is after all, working on a principle.
It is but a modified transformer.

--- End quote ---

Foggy-Notion

In general the Joule thief thread  is about  getting more out of a simple circuit.
Most  of the focus has  been on using one  AA battery

The  second stage joule thief thread was  created to try to take  it to the next level

The biggest JT I have personally made was when I  connected  the primary and a secondary together and made a JT out of them.......

I only ran it  a few seconds because it overloaded my meter and  arced right through  the insulation on my alligator clips

I also  have ran  many of my coils  at 12 V
The 5 for $1 toroids that worked well on 1.5V usually did not  do any better  with 12 V
Larger  stuff like flyback cores do great at 12 V


Just because the focus  has been on smaller JTs so far that does not mean that there is no room for  large JTs
Go for it if you  want
You might end up leading  us all in a new  direction.

One reason  I like  using one AA battery ........ you can make alot of mistakes without burning stuff up ........ with higher voltages I usually fry something with each mistake I make ......and I am still pretty new at this.......I make alot of mistakes

gary

Foggy-Notion:
Thanks for reply.

Well I'm talking higher amps, more than higher volts.
The JT itself creates the higher volts, to my understanding.

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