Joule Thief

[altrez]

altrez:

That is very cool, I have never seen that before.  That is our own Stefan Hartman, owner/moderator of the OU forum. (In case you didn't know)

Those scope shots do look familiar.

Bill

Wow cool I did not know that. The scope shots look really close to ones I have seen. I am not sure how he is hooking up the bi-filer though. I never learned what the black dots meant =)


Also check out this link: http://jnaudin.free.fr/teptheo/teptheo.htm It shows even more..

-Altrez

[stprue]

@all
Has anyone built a SSTC and hooked it up to a JT instead of the normal tesla windings?  I did this today as I have recently built my first tesla coil.  Very coooooolllllll

I tried to get an amp reading and my DMM looked like it was dieing.  Does anyone know how to get an amp reading on a tesla coil?

I love the smell of ozone in the morning 

[jeanna]

Hi Altrez,

Yeah, I guess Stephan has been doing this for a while 12 years at least!

If you think how you wind the primary bifilar the way Hazens1 does, you go from a center point and from that point of view, winding to the right and to the left at the same time. Then upon closer view, the center is like a tap, where the wire was going along in one way but made a big loop for connection and then continued along the same way.

It is hard to describe and it is hard to draw, so the little dots remind you of the orientation of the turns being opposite from each other when seen from the point of attachment.

This may be even more confusing!, but there it is! 

jeanna

[jeanna]

@all
Has anyone built a SSTC and hooked it up to a JT instead of the normal tesla windings?  I did this today as I have recently built my first tesla coil.  Very coooooolllllll

I tried to get an amp reading and my DMM looked like it was dieing.  Does anyone know how to get an amp reading on a tesla coil?

I love the smell of ozone in the morning 

Not fair!

You didn't tell us what happened!

What happened??

I guess it wasn't letting out any sparks or you would have reported. I am thinking of putting my ignition coil onto a joule thief, but I am not sure about the ignition coil connecting the primary and secondary. I think I want to get rid of that connection.

The joule thief as a radiant signal generator is (as I showed) quite possible, but the receiver needs to be able to receive pulses and not straight dc.
I imagine if your sstc was set up to receive dc input, the output will be weak.

But I want to hear from you exactly what happened?

I think you might use some fluoro or neons or things like that to estimate how much you are getting without killing wimpy machines.  They were certainly not designed to withstand a powerful tc output.

lets hear about it please,
If there is a lot we could move over to a tesla page,

jeanna

[altrez]

Hi Altrez,

Yeah, I guess Stephan has been doing this for a while 12 years at least!

If you think how you wind the primary bifilar the way Hazens1 does, you go from a center point and from that point of view, winding to the right and to the left at the same time. Then upon closer view, the center is like a tap, where the wire was going along in one way but made a big loop for connection and then continued along the same way.

It is hard to describe and it is hard to draw, so the little dots remind you of the orientation of the turns being opposite from each other when seen from the point of attachment.

This may be even more confusing!, but there it is! 

jeanna

Thank you

-Altrez