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Author Topic: Joule Thief  (Read 4937272 times)

Offline jeanna

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Re: Jule Thief
« Reply #13245 on: April 02, 2010, 09:09:54 PM »
...
After building my 1st Joule Thief Circuit one of the first things I wondered was..

                What would happen if I fed a Joule Thief into another Joule Thief ?

Heck... make it 5 or 10, but 2 is a good start.

To those knowledgeable of this thread.

           What is the status of experiments pertaining to feeding the JT into another JT into another JT ect?

The Observer

Hi
I also wondered that, and when I said it MK1 said he had found the results very disappointing.
Me too.

In the end I realized that the joule thief works from a low voltage dc source mostly because of the transistor along with some other things.
Go ahead and see for yourself.
Maybe you can figure out a way.
That would be cool.

In fact, I was trying to make that work when I stumbled upon the circuit that did work and so I encourage you to follow your hopes, because you might discover something really great.
And we will all benefit.

jeanna

@tysb3,
Thank you for your explanation.
The "hand scratching" helped me a lot.

-----------
edit add some more...
In the end what enhanced the output a lot and seemingly without end was to add an inductor in series to the secondary output.
If each load had its own inductor the pulses could be enhanced.
Sometimes a cap which "tanked" it would help, but it was not generally necessary for the effect.
The best most enduring effect came from adding an inductor in series with the load or light.
I used those helmholz inductors at first, but found it was better to make my own.
« Last Edit: April 03, 2010, 12:37:16 AM by jeanna »

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Re: Jule Thief
« Reply #13245 on: April 02, 2010, 09:09:54 PM »

Offline jadaro2600

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Re: Jule Thief
« Reply #13246 on: April 03, 2010, 12:00:19 AM »
Hi
I also wondered that, and when I said it MK1 said he had found the results very disappointing.
Me too.

In the end I realized that the joule thief works from a low voltage dc source mostly because of the transistor along with some other things.
Go ahead and see for yourself.
Maybe you can figure out a way.
That would be cool.


I've tried this as well, it seems as though impedance plays a role in the dispensation of energy...the voltage is only produced after the flow of energy has ceased in the inductor and thus surges for an exit ...  it is not strong enough to make a significant difference by passing through yet another inductor.

I think the exciter and joule thief circuits should be considered 'irritable electricity' ...

- - - - - -

I found a relatively old book by Texas instruments from 1963 which contains 7 pnp based circuits which, as it stands, do exactly what the joule thief does in principle.  I found it for 50 cents at a local thrift shop.

Some interesting circuits here in this book, perhaps I can translate them to a diagram soon.  Some of them contain multiple transistors.

The book is titled "Transistor Circuit Design".

Offline tysb3

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Re: Jule Thief
« Reply #13247 on: April 03, 2010, 05:27:20 PM »
I correct pot R2

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Re: Jule Thief
« Reply #13247 on: April 03, 2010, 05:27:20 PM »
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Offline The Observer

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Re: Jule Thief
« Reply #13248 on: April 03, 2010, 06:22:32 PM »
Jeanna,

So you tried this?

                      JT---> D=C ----> JT

That is a Diode and Capacitor capturing JT Pulse... then another JT feeding off of said Capacitor.

The Observer

Offline Flux4Energizer

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Re: Jule Thief
« Reply #13249 on: April 03, 2010, 06:49:10 PM »
@tysb3

Your Double Joule Thief circuit looks nice.
Have you already tested it?
I would like to see how many LED's you can light of it and how much mA it draws.

Keep up the good work!

Free Energy | searching for free energy and discussing free energy

Re: Jule Thief
« Reply #13249 on: April 03, 2010, 06:49:10 PM »
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Offline jeanna

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Re: Jule Thief
« Reply #13250 on: April 03, 2010, 07:05:40 PM »
Jeanna,

So you tried this?

                      JT---> D=C ----> JT

That is a Diode and Capacitor capturing JT Pulse... then another JT feeding off of said Capacitor.

The Observer
No, I didn't.
(But is that not what Kooler's circuit does?)
I cannot figure how to get 70v or more into a safe form to use in the second tier.
Then also, when some of us have tried to make the jtc with a higher input voltage the results are not really different.
The jtc is making pulses, and that is what it is about.
The sharper the pulses, the better.

But you could discover something I have not.

If you read my posts about the 2 tiered circuit, you will see that I discovered that the second transistor was not even operating.
I went off in another direction and never went back to try making the higher voltage input work,.
But, don't let this stop YOU!
Follow your ideas, you may not get the solution you are thinking you will get now, but you will learn a lot and probably get A solution.

So, go for it!

jeanna

Offline crowclaw

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Re: Jule Thief
« Reply #13251 on: April 03, 2010, 07:46:48 PM »
@tsyb3,

High... I didn't intend to offend you in any way regarding your circuit, only to encourage you to go through previous postings on the JT thread. It just seemed that you were taking a sledge hammer to crack a nut and increasing the power draw. Sometimes you have to try things out to satisfy your own curiosity and the results can come as a surprise... it's all a learning curve from which all ideas posted can be shared and the learning continues and grows. Let's see how it pans out for you. Keep us posted when you have some results... well done. Kind Regards

Free Energy | searching for free energy and discussing free energy

Re: Jule Thief
« Reply #13251 on: April 03, 2010, 07:46:48 PM »
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Offline Pirate88179

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Re: Jule Thief
« Reply #13252 on: April 03, 2010, 09:10:29 PM »
About multiple JT's.

I had thought about this a while ago but never tried it.  It just seemed to me that since the basic jt puts out pulsed dc, unless rectified it would not operate the transistor on the second (3rd, 4th, etc) jt, am I right?  Now, I suppose you could have the first jt's pulsed output running to other bifilar wound coils without any additional transistors but I don't think you would get anything extra that you would not have received from just using a larger toroid in the first place.

I believe Gary did this a while ago by linking a number of smaller toroids to run as one jt circuit.  I believe he did this to find a work around as the real big toroids are kind of hard to come by these days.  I don't believe Gary had a transistor on each toroid, only one of them, but he can correct me here.

Anyway, this is why I never tried it although, like we always say, you never know what might be discovered by trying something.

Jeanna mentioned that the second transistor was not running which makes sense as it would need dc not pulsed dc, unless you rectified the output, I don't see how any additional transistors would operate at all.  And, like Crowclaw mentioned, every additional transistor would take power to run which is against what most of us are working toward here.

Just my 2.5 cents worth.

Bill

Offline Mk1

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Re: Jule Thief
« Reply #13253 on: April 03, 2010, 09:41:36 PM »
@all

I have been toying around with those dual jt idea , first i found that my salvaged transistor acted surprisingly well on 3 volts , maybe we don't use the right transistor to run at higher voltages .

I made a drawing of some of me ideas , but the idea would be to make a perfect mirror pushing while puling , like the blood system , and then see what one kick dose .

I tested the schematics (on the cardboard), they work , the coil can pretty much connected in polarity for the basic jt to work , but greater care is needed to get the outside satellite to work .

Overall way more fun to be had !

Mark

 


Free Energy | searching for free energy and discussing free energy

Re: Jule Thief
« Reply #13253 on: April 03, 2010, 09:41:36 PM »
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Offline tysb3

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Re: Jule Thief
« Reply #13254 on: April 03, 2010, 09:49:35 PM »
Quote from: Pirate88179 link=topic=6123.msg236109#msg236109 A=1270321829
About A JT's.

  And, like Crowclaw mentioned, every additional A would take power to run which is against what most of us are working toward here.



Bill

Hi, Pirate88179,

Additional transistor  is working on feedback line. He's only transfering  power from 1rst JT to source battery, - dont use it. Source battery use it for self recharge :)
"E" Q2 is not on "-" battery !!!!!!!!!


« Last Edit: April 04, 2010, 02:04:36 AM by tysb3 »

Offline tysb3

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Re: Jule Thief
« Reply #13255 on: April 03, 2010, 10:09:42 PM »
@tysb3


Have you already tested it?



Hi, Flux4Energizer,

Not yet.
Now I'm tryig to improve efficiency, to minimize curent draw from source battery and maybe get OU  ::)


Free Energy | searching for free energy and discussing free energy

Re: Jule Thief
« Reply #13255 on: April 03, 2010, 10:09:42 PM »
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Offline tysb3

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Re: Jule Thief
« Reply #13256 on: April 03, 2010, 10:32:20 PM »
@ All, who try to replicate my 2JT.

All my parts are from salvage. What I put on circuit is far away from ideal. Any one, who have electronics knowledge can improve this
I'm little short in  electronics knowledge.   :(
But with little help my big friend Tektronix465 I can move forward  :)
« Last Edit: April 03, 2010, 11:40:18 PM by tysb3 »

Offline tysb3

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Re: Jule Thief
« Reply #13257 on: April 04, 2010, 12:25:14 AM »

Offline Mk1

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Re: Jule Thief
« Reply #13258 on: April 04, 2010, 02:09:11 AM »
@all

Ok i did some test and get more output from my dual circuit with the base from one on the others toroid.

That way the bemf from the collector from one jt feeds the base of the second jt by induction , i can prove it but i believe they sync and work as one.

 




Offline Mk1

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Re: Jule Thief
« Reply #13259 on: April 04, 2010, 02:22:38 AM »
@all

Look what i have found ... When the circuit is live ...


 

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