Joule Thief 101

[Montec]

Hello all
Crucial  knowledge that I have gleaned from the internet over the past few years regarding magnetic fields and inductors is:
1: Usable energy from magnetic fields in inductors is stored in the gaps between magnetic materials. ie magnetic materials do not store energy they just transfer energy.
So the best types of coil cores for the Joule Thief would have gaps incorporated in them. ie gaped laminate cores or powdered metal cores (the gap is between the metal particles) The coils should to be wound over the gaps for the best result or equally spaced on the powdered metal cores.

Non-gaped laminate and ferrite cores make excellent transformers but poor energy storage inductors.   

[ltseung888]

See the following

http://www.overunityresearch.com/index.php?topic=1171.msg20464#msg20464

for the secret behind the Joule Thief and FLEET.

The attached diagram is the Output over Input Power Comparison.  Enjoy

[resonanceman]

See the following

http://www.overunityresearch.com/index.php?topic=1171.msg20464#msg20464

for the secret behind the Joule Thief and FLEET.

The attached diagram is the Output over Input Power Comparison.  Enjoy

I think you have something here.
I have been thinking of something for a while but I dont have the ability to really test it.

Most of Teslas later work involved spark gaps.....these insured a high rate of change but would also require relatively high voltage.

From what I understand the Howard Johnson motor used around 2000V

I understand the Gray conversion tube used 3000V

A joule thief creates a pulse with very high rate of change.
What would happen if someone amplified the output of a joule thief?
What would happen if someone used a joule thief to charge a capacitor to lets say 1000V ......then pulsed that with a signal from a second joule thief.
Any guesses what the BEMF pulses from a 1000V joule thief would be?

It seems to me that if you fed an 1000V joule thief type pulse into the right sized transformer you would  have a delay line generator.

Nothing really new here.......but in my opinion using joule thiefs for the high voltage supply and for the pulse supply would make the circuit smaller and cheaper.

gary

[resonanceman]

I think you have something here.
I have been thinking of something for a while but I dont have the ability to really test it.

Most of Teslas later work involved spark gaps.....these insured a high rate of change but would also require relatively high voltage.

From what I understand the Howard Johnson motor used around 2000V

I understand the Gray conversion tube used 3000V

A joule thief creates a pulse with very high rate of change.
What would happen if someone amplified the output of a joule thief?
What would happen if someone used a joule thief to charge a capacitor to lets say 1000V ......then pulsed that with a signal from a second joule thief.
Any guesses what the BEMF pulses from a 1000V joule thief would be?

It seems to me that if you fed an 1000V joule thief type pulse into the right sized transformer you would  have a delay line generator.

Nothing really new here.......but in my opinion using joule thiefs for the high voltage supply and for the pulse supply would make the circuit smaller and cheaper.

gary

I have played with this idea a little.
I have a few suggestions for anyone that wants to play with the idea
I suggest using a bridge as a voltage clipper on the output of the pulse supply JT
The output of that bridge would go back to source......so your source battery should be at the voltage you want to have feeding the gate of your MOSFET or IGBT
I burnt up quite a few IGBTs trying to tailor the joule thief to the right output to feed the IGBT before I started using a bridge as a clipper.


I fed the output of the pulse JT into a bridge.....both posative and negative legs of the bridge go to the gate, the negative through a resistor.
This resistor will vary depending on other circuit components.
10M might be a good place to start.
The negative connection  is to keep an IGBT turned fully off......but should allow faster switching with MOSFETs.


I have not yet ramped up to high voltages........but I have been playing.

I dont have a scope.....my way of testing to make sure I have pulses rather than a simple DC signal  is to run  it through a transformer.
an output on the transformer secondary means I have a pulse.

gary

[ltseung888]

I think you have something here.
I have been thinking of something for a while but I dont have the ability to really test it.

Most of Teslas later work involved spark gaps.....these insured a high rate of change but would also require relatively high voltage.

From what I understand the Howard Johnson motor used around 2000V

I understand the Gray conversion tube used 3000V

A joule thief creates a pulse with very high rate of change.
What would happen if someone amplified the output of a joule thief?
What would happen if someone used a joule thief to charge a capacitor to lets say 1000V ......then pulsed that with a signal from a second joule thief.
Any guesses what the BEMF pulses from a 1000V joule thief would be?

It seems to me that if you fed an 1000V joule thief type pulse into the right sized transformer you would  have a delay line generator.

Nothing really new here.......but in my opinion using joule thiefs for the high voltage supply and for the pulse supply would make the circuit smaller and cheaper.

gary

Dear Gary,

The Taiwan LED Manufacturer is improving their LED Hat product shown to use one single battery and prolong the life of that battery many times.

That should not come as a surprise to you or the many long time Joule Thief Researchers.  The surprise is that they use Two Atten Oscilloscopes to hunt for the “right configuration”.  That put them in very solid scientific footing.

There is a very strong possibility of significant Government funding in the near future.  There is talk of giving every US Law Maker and/or every United Nation Representative in New York a “forever lasting” LED Hat. 

Overunity Research will get a boost???  Keep up your excellent work.  Money will seek the experts.  I strongly suggest that you get at least one Oscilloscope with csv file capability or work with someone with such a device.

Divine wine is for all.