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Author Topic: Joule Thief  (Read 4945005 times)

Offline detrix42

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Re: Jule Thief
« Reply #13215 on: March 28, 2010, 11:25:06 PM »
[A author=detrix42 link=topic=6123.msg235096#msg235096 date=1269795045]
@all:  Here is something I am figuring out about the Joule Thief.  With my current setup, it does not matter what the input voltage is, I still get 120v out.  This is why a 1.5v battery drained to .5v can still power an LED.  This is very interesting. So what do I have to do the get more voltage out.  I would love to power my Newman motor with only 1.5v input.  My guess is the number of windings in the larger side of the coil.  So I will definitely want to try an automobile's ignition coil. 

I believe you only need enough to bias the base-emitter junction of the transistor.  And perhaps the speed at which the transistor can be switched on and off plays a factor in how much I can get out of a JTC.  Hmmmm...............................

I have included a schematic of my setup, which seems to be the best efficiency (voltage wise, most bang per volt).  I did not include a voltage value, because it seems to not matter.


Hi detrix what transistor and diode are you using?
Thanks

I have gone through a few transistors.  Just a general NPN.  currently I have a 6256N719, and the diode is a general purpose 2n4007

Nothing special here.

Free Energy | searching for free energy and discussing free energy

Re: Jule Thief
« Reply #13215 on: March 28, 2010, 11:25:06 PM »

Offline Mk1

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Re: Jule Thief
« Reply #13216 on: March 29, 2010, 12:43:09 AM »
@detrix

Usually the transistor dose make a huge difference in the results , try 2n3055 or 2n2222 , but the transformer you use will not give you that much more .

Mark

Offline slayer007

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Re: Jule Thief
« Reply #13217 on: March 29, 2010, 03:30:16 AM »
Hi A

Always testing the main coil  and today i could get a nice very stable 2mm long plasma arc with about 100 ma at 12 volts.

What is remarkable is that the Arc does not appear when i turn the current on. I have to light my CFL tube first   (by contacting the main coil)  than i have to slowly get away the CFL tube until the light desapears  and only than the plasma arc is on.

It seems to be the necessity to turn the coil outer power on.

Very interesting

Can you explain why we need to turn this outer power on ? And can somebody explain me what is the power in a plasma arc.  The smelling of ionised air is quite strong and depending of the gap distance it can burn my table. !

Regards

Laurent


Nice one Woopy.

I started a new thread for this under.

http://www.overunity.com/index.php?topic=8977.new#new

Free Energy | searching for free energy and discussing free energy

Re: Jule Thief
« Reply #13217 on: March 29, 2010, 03:30:16 AM »
Sponsored links:




Offline detrix42

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Re: Jule Thief
« Reply #13218 on: March 30, 2010, 05:54:20 AM »
detrix,

   Less turns on primary and more turns on secondary, you can get over 1kv. Another example is winding three coils on a 2.5 inch toroid core, 2 turn primary and 10 turn secondary (JT), with the collector at 80 turns.  Those little flash camera circuits also put out over 1kv. 

http://youtube.com/jeannacav
http://youtube.com/lidmotor

e
east

Thank you Estov, but I am having some difficulties. Its probably something I am not doing quite right.  I dont have any ferrite toroids that big available, so I am trying a speaker magnet about that size.  I tried the 2 windings and 10 windings (actually I did more like 20 windings), but this could not even light my LED.  I wanted to get the JTC part working before I added the 80 turns.  So I am not sure what I am doing wrong. hmmmm......

Offline Pirate88179

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Re: Jule Thief
« Reply #13219 on: March 30, 2010, 07:01:12 AM »
Thank you Estov, but I am having some difficulties. Its probably something I am not doing quite right.  I dont have any ferrite toroids that big available, so I am trying a speaker magnet about that size.  I tried the 2 windings and 10 windings (actually I did more like 20 windings), but this could not even light my LED.  I wanted to get the JTC part working before I added the 80 turns.  So I am not sure what I am doing wrong. hmmmm......

You can't use a speaker magnet, or any magnet of any kind for the toroid.  The entire trick to all of this, as I understand it, is the ability of the ferrite to very quickly magnetize when energized and then demagnetizes very, very quickly which give the spike of the back emf which is where all of the energy lies.

Soft iron (meaning iron that magnetizes quickly and demagnetizes quickly) will work also but, you do not ever want to use a magnet.

I hope this helps.  Please ask more questions if I have not been clear here.

Bill

Free Energy | searching for free energy and discussing free energy

Re: Jule Thief
« Reply #13219 on: March 30, 2010, 07:01:12 AM »
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Offline The Observer

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Re: Jule Thief
« Reply #13220 on: March 30, 2010, 08:29:37 AM »
Magnetic Permeability....
 You have to understand it to understand coil's and cores !

Detrix..study the chart below and you might get an idea of how the transformer works.

The Observer

Offline Eastov

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Re: Jule Thief
« Reply #13221 on: March 30, 2010, 09:00:59 AM »
Detrix,
  You can use a smaller toroid, or maybe the square type from an old TV flyback transformer.  Here is the schematic which was originally posted with the toroid pic I posted earlier...
e

Free Energy | searching for free energy and discussing free energy

Re: Jule Thief
« Reply #13221 on: March 30, 2010, 09:00:59 AM »
Sponsored links:




Offline forest

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Re: Jule Thief
« Reply #13222 on: March 30, 2010, 09:32:26 AM »
Iron is ok, but what about cadmium ? ::)

Offline Pirate88179

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Re: Jule Thief
« Reply #13223 on: March 30, 2010, 10:05:36 AM »
Iron is ok, but what about cadmium ? ::)

It has to be soft iron as in soft like not holding a magnetic charge.  Regular iron does not work.  Some toroids are made of powdered soft iron and they work ok too.  You can find these inside cfl light bulb bases.

Bill

Free Energy | searching for free energy and discussing free energy

Re: Jule Thief
« Reply #13223 on: March 30, 2010, 10:05:36 AM »
3D Solar Panels

Offline Eastov

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Re: Jule Thief
« Reply #13224 on: March 30, 2010, 11:47:27 AM »
You guys can try air core too, like MK1 & slayer's latest. 
Just spools of wire or wrapped around paper tubes, 
one inside of the other.  You'll have to play around
with their positioning, slide one into the other to
get things going. 
e

Offline Eastov

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Re: Jule Thief
« Reply #13225 on: March 30, 2010, 01:00:39 PM »
Anyone else watching the gotoluc self-runner resonate coil project? 
Heads Up!
He's now saying that mosfet's capacitance is critical to self-run (mosfet is mandatory). 
http://www.youtube.com/watch?v=N8BehANEVUo&feature=sub
e
« Last Edit: March 30, 2010, 08:40:00 PM by Eastov »

Free Energy | searching for free energy and discussing free energy

Re: Jule Thief
« Reply #13225 on: March 30, 2010, 01:00:39 PM »
3D Solar Panels

Offline detrix42

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Re: Jule Thief
« Reply #13226 on: March 30, 2010, 03:32:43 PM »
@pirate, theObserver, and estov:  Thank you so very much.  I really appreciate all the help.  Now lets see if I make things work better.

Offline jeanna

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Re: Jule Thief
« Reply #13227 on: March 30, 2010, 09:06:39 PM »
Thank you Estov, but I am having some difficulties. Its probably something I am not doing quite right.  I dont have any ferrite toroids that big available, so I am trying a speaker magnet about that size.  I tried the 2 windings and 10 windings (actually I did more like 20 windings), but this could not even light my LED.  I wanted to get the JTC part working before I added the 80 turns.  So I am not sure what I am doing wrong. hmmmm......

Hi dextrix42,
I want to add to what Bill has said.

My first joule thief was made on a ferrite magnet from radio shack. I did not know not to use a magnet and they came in a toroidal shape.
It worked with 2 batteries -3v- for a day, then stopped.
The transistor had stopped working because magnetism can blow a transistor.

I took it apart and after a month it worked again.

So, there are 2 things that can blow a transistor.
1- too much voltage
2- too much magnetism

I made a joule thief from a tiny toroid found in a 10w cfl bulb circuit.
The new cfl bulbs all have these circuits and they are a good source for electronic parts.
My video on that is here if you feel like looking into it.
http://www.youtube.com/watch?v=ZnNQrYy_Bw4
There is no sound and should work OK on dial-up too.

jeanna

Offline jeanna

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Re: Jule Thief
« Reply #13228 on: March 31, 2010, 12:34:31 AM »
Here is my newest video

http://www.youtube.com/watch?v=BER7FTW1FfA

thanks to lasersaber and Shannon for making this latest success possible!

jeanna

Offline Eastov

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Re: Jule Thief
« Reply #13229 on: March 31, 2010, 09:14:47 AM »

Recommend movie "Zeitgeist" and also the "Addendum"? 
http://video.google.com/videosearch?q=zeitgeist#

 

OneLink