Joule Thief

[jeanna]

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

[crowclaw]

@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

[Pirate88179]

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

[Mk1]

@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

[tysb3]

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 !!!!!!!!!