Joule Thief

[innovation_station]

i added some GAGA in the vid mix ...  as the first video was to long for youtube ...

so i shortened it up ...

http://www.youtube.com/watch?v=z92Jko8Nt6M

12vdc motor tests ...   thinking NPN PNP PULSE MOTOR NEXT ...  MAYBE ... 

W

[jeanna]

Also , i have a suggestion , you could try a flyback jt the way Resonance man (Gary) did it , to load the first cap before the second stage , i am sure it would load the cap real quick, raising the freq of the second stage...

He basically took everything off except the high voltage coil , and wound on some jt coils.

Mark,
Would you please say this again.
(I corrected one word which I believe will help people understand but)---

I still do not know where this cap goes.
Are you saying to put a cap between the Collector and the Collector coil?

thank you

----
@all,
I have wound a dual toroid somewhat as others have done, but I believe differently.
It is giving me very high volts. I think they are also very thin because my scope sees them but I think many of them do not show up on the screen.

I overlapped the 2 toroids and wound the 3T base coil onto one
then over the overlap, I wound the 9T Collector coil and connected them center tapped and put this contraption into a circuit as the jt toroid.
It lit the light easily and well, so I wrapped a 9T secondary onto each toroid.
They seemed to be slightly different with the slightly higher amount being on the toroid that had only the collector winds on it... the dc toroid.

Then I read another mag amp webpage, which made the point that the dc toroid should give the output, so, I put them together. Since they were 2 separate wires, I wound them with a splice in the middle which COULD be seen as another center tap. (I did not use that aspect yet.)

I am getting 172 volts from the 16 to 20 turns. Yikes. But this is not yet able to light a neon so the spikes must be very skinny or maybe most of them are less. . The ones I can see are definitely 172 volts, so I think this is pretty interesting.

I will also try the center tap on a third toroid.

The problem is so far I am still hooked to the transistor.

The good news there is that 2 days ago I removed the neos from the table and yesterday I removed the magnetized lamp, and today the circuit I was working on at 140 v is now up to 500v with no change but time!!

Wow. Those neos are sumtin else!

jeanna

[freepow]

 :)Thanks all for your help, and especially to Jeanna for a long explanation!

@ Jeanna... how many turns on your toroid... 48 secondary, but whats the other turns ?
Also how much current draw does your bedside joule thief use ?

When I measures my joule thief with AA, it said 200+ ma's but I put DMM neg-lead to (-) on battery and
+ lead to collecter of transistor, is that wrong ?

In the example in photo - where would I put DMM (-) lead and (+) lead to on joule thief in photo to measure how many mA's the joule thief uses out of AA to light LED's

[Mk1]

Mark,
Would you please say this again.
(I corrected one word which I believe will help people understand but)---

This is about the circuit kooler and xee are working on , i can't find the schematic .

Mark

[jeanna]

:)Thanks all for your help, and especially to Jeanna for a long explanation!

@ Jeanna... how many turns on your toroid... 48 secondary, but whats the other turns ?
Also how much current draw does your bedside joule thief use ?

When I measures my joule thief with AA, it said 200+ ma's but I put DMM neg-lead to (-) on battery and
+ lead to collecter of transistor, is that wrong ?

If you didn't blow the fuse... nothing! 
You need to measure the VOLTS across something like a resistor or a normal diode.
Think of the place being spliced into the red positive battery wire and that should help.
On your pic
I will make a mark and reload your drawing if I can.

jeanna