Second Stage Joule Thief Circuits

[innovation_station]

not yet ...

i was hopeing to make a simple power can b4 i make time machines teleportors quantum viewing and all the other nutz ideas and stumblings i come across ...

ist 

i do agree it is a kick in coil ...  that thing .... say i yi yi ...

[jeanna]

Can someone give some general optimal specs for these cores. Like material type, permeability, size and so forth. I'm going to contact some Chinese dealers and ask around.

Broli,
That will be a good idea later, I think.
We went around a while back because MK1 did some research and found we need low permeability.
I got the lowest I could find and they won't start up.
Then Hazens got one with known permeability and it was called low and it was something over 1k maybe even 7k, but that is buried now.

The thing is we get these things and they do not tell us the permeability.
I suppose we could back into them by knowing the rest of it likes turns resistance of wire diameter of tube of the toroid etc, but we don't.

Xee2 found some figures and ist's manufacturer might have them.
We really should do a study with known permeabilities, but we haven't, afaik.

I wasted $35 on those high flux toroids. It would be a shame for me to let you do the same without warning.

jeanna

edit.
For now, why not get a sampling from allelectronics and/or electronic goldmine and make a  jt and then make a few with secondaries and see what you can make with them..

[Mk1]

@gadget

I guess you will need to unwind , those plastic holder are real nice .

But first undo the top layer so you could use all 4 coils , 2 jt 2 secondary.

I think it could do a nice meg the is just enough space for magnets and 4 coils .

I have posted my ideas on the main jt tread.

[innovation_station]

i had good results with that core .. 


i guess it depends on what you choose to do with it ...

i dont need supper high volt spikes  with 2 freq ..

just tonnes ....   the jt  wave is not that impressive ...

hence why it takes so loong to charge the cap

w

i think for the 60 hzdc 2.6v dc step up transformer a piece of pipe will do for a core ...

im winding it now and will post a pic of the convertor dc to ac ...  you will have to tune it to find your desired output voltage

[Mk1]

@Jeanna

I still am unsure of the best permeability , for the jt , but you need big flux.