Joule Thief

[jeanna]

I also found this little thing , look at the power input.

Pretty interesting. I like how it is sitting on the earth. I like it a lot.

Is there any more information than these drawings? They look like something out of a notebook.

Great find!!
Thanks so much for posting it.

jeanna

[jeanna]

7-7-70 and I can get around 111v DC with it.  I am just blown away that Mk1 and others are getting upwards of 850v DC.  I wish I had more time to tinker.  I will post some pics with voltage data at some point soon!

HEY stprue,

That is fabulous!
111v  good going. I think it is about my maximum voltage, too.

What blows ME away is that more people have not even tried that MK1.

Even my variations are better than anything else, even if they are not as good as the real thing.
In fact my little variations are teaching me a lot about this subject.
I think more than my other experiments... except the 2 tier.

waydago stprue!!

jeanna

[jeanna]

@theNOP,

the 4.15us value is the time between 2 peeks(spikes)

Ahh finally. I see it.
Thank you. and thank you for your persistance.

and

Note
the frequency can change with the time rate.
the cycles i see on that pic are not always the same and that is why it can change.

And, that is the reason it has been hard to figure it out by logic. Its behavior changed as more time went on or at closer resolution. But not having to do with anything I was doing, just where the scope was picking up the wave at the moment.
WHEW!

the 20 v/div mean 20 volts per division, those divisions are on the left side of the screen from top to buttom.
set that to 1v/div for the 12 volts test i suggested to you.

I will try again, but so far I have only been able to use .1 .2 .4 .8 4 8 and 20v/div.  (Unless I switch to the x10. I have more there, but I am not yet sure what this resolution is. I feel it is better to keep to the simple beginners level for a while, unless forced by a higher voltage spike problem.)

it is call capacitive coupling.

it is the same as putting a capacitor between the free leg(s) of the led(s) and almost anywhere on the jt circuit.
the higher the frequency of your circuit the better the coupling is.

Ah, I have been wanting to know what that means. Now, I have 'experienced' it, so to speak.

where does it come from?
so, it was evidence of the high high frequency in that particular trial, wasn't it?

Quote from: jeanna on April 18, 2009, 09:54:32 PM
I wanted to see if one battery powering the jtc in stepwise fashion would give more useful power or not.
unfortunately, it will not.

transformer are the worst, the most energy waisting, componants in electronic, even when made carefully.

the jt circuit secret is that it step up the voltage without a transformer.

And this is a jt with the secret. NO?

Is there a 'normal' or other way to step up the step up?

If I used a matched pair of jt cores and 1^o windings but made the second tier a 'step up' from the first tier, would that possibly give me more, rather than less?

I better try that!
(even if physics says I won't.  )

again,
thank you for your patience and help,

jeanna

[resonanceman]

. an example is  a zero threshold voltage n-channel FET .. These are new on the market and can oscillate at0.16 volts .. 

Gadget   do you have a  part number?

It sounds like   something I would like to play with


gary 

[xee2]

@ jeanna

Is there a 'normal' or other way to step up the step up?

Use a step up transformer as follows.

EDIT: I modified circuit diagram so that it will be easier to understand.