Joule Thief

[Freezer]

@ Pirate88179

Works per Freezer circuit. Brighter than Kodak but does not seem as bright as Freezer was getting, but I do not have neon bulb in parallel with tube. If you are still having trouble getting it to work - post photos of board near neon bulb (showing bulb), near diode (showing diode), and on other side of board near positive battery terminal, I will mark them up to show where to clip leads.

Nice work xee.  Try a AA duracell, I think that will make the difference.  Your image is labelled AAA, so I guess you are using a AAA?  I think a AA will have higher amps to work with.  I measured the output to be about 180vac and about 14vdc with a duracell AA. On my panel amp meter I got over 5 amps from the duracell alone short circuit.  A typical AA can pack some power.

I tried powering a small computer fan with a rectifier, but it was very weak.  The fan would barely spin but it would sustain a spin.  It stutters along, but if you use a magnet at the right distance from the coil, it starts to spin smoothly, weakly, but maintains a spin.  I'm wondering if a cap inline with the rectifier would improve performance. I'm also wondering is there any other ways to rectify ac other than a bridge rectifier?  I read about submerging 2 specific types of electrodes in a certain solution to rectify ac, but I'm not sure how that works.

[xee2]

 @ Freezer

I think the reason your attempt to combine two circuits produced inconsistent results was because you were adding two voltages with varying phases. When they were in phase you got more voltage out, but when they were out of phase you got less voltage out. I think a betterr way to combine outputs from two transformers would be as follows. This should assure that the voltages always add in phase. But I have not tested this.

[Freezer]

@ Freezer

I think the reason your attempt to combine two circuits produced inconsistent results was because you were adding two voltages with varying phases. When they were in phase you got more voltage out, but when they were out of phase you got less voltage out. I think a betterr way to combine outputs from two transformers would be as follows. This should assure that the voltages always add in phase. But I have not tested this.

Thanks xee, I hooked it up as in your drawing and it works.
Made another video - 
http://www.youtube.com/watch?v=nEojrtKb48w&feature=channel_page

[Goat]

@ xee2 & Freezer

Nice collaborative work, that's the best looking JT circuit production yet 

@ Freezer - Your video is great!  Thanks!

Please if you could post the circuit on the first post of this thread, and lock it 

Regards,
Paul

[xee2]

@ Freezer

Thanks for the feed back.  I am glad you got it working. That should give more light than a single transformer circuit. However, you may want to heat sink the transistor since it is doing the work of two transistors.