Joule Thief

[nievesoliveras]

Something like this:

Jesus

[freepow]

Thanks both of you's for your help, I tried it and it works 

Is it possible to charge up a HV Cap 400v as fast as a Disposable camera does by only using a Joulethief

I tried a small secondary which measured about 100v, and charged a 400v 180uF cap and watched the DMM reading while charging, and it only showed the Cap starting at 40+ volts and going up slowly 

Can I charge it up quick like a Disp-camera ?
What voltage will I need coming out of secondary ??

[nievesoliveras]

There was a circuit on one of the threads in this forum that to charge a cap to high voltage striking the wire through a permanent magnet was needed. It charged the capacitor fast.

I dont remember which thread it was.

But that is a start.

Jesus

[stprue]

I think that was IST's NEO Zap stuff.

[Artic_Knight]

@Artic Knight,
I just want to share a design idea that has worked nicely for me.

In the craft dept of the wall mart there are placks. These are unfinished hardwood boards in 3 sizes around 6" x 8".
If you make your joule thief circuit and stick it onto one of these placks you have a nice looking and moveable device that can light various batches of leds depending on where you want the lights to be on.

A youtuber named the daftman showed many folks about using brass nails to mount a good looking circuit on a small board when he first made a bedini ssg circuit.
I recommend having a look.

Enjoy,

jeanna

Oh, lately I have been seeing what can be done with almost no current. It is not as interesting, but could come in handy. 

perhaps more efficient wasnt the best word, i am looking at doing what you are in respect that i want to do as much with as little as possible. ive been doing some magnetic research lately trying to figure it out and now i want to try and put it to the test and see if i can get a joule thief to be self sustaining.

i saw a model of one that supposedly went down to 1 mah? although i do like the design of putting the coils after the transistor to create a more "break current" situation. tesla did that with his "exploding wires" well not with a transistor but he would cut off the current as obruptly as possible. i think you may have even mentioned that project of his.

i would imagine if one could reduce the draw of the setup far enough they could power a battery charger wirelesly with no need for a electrical transmitter. i doubt it would be a fast charger though but perhaps with the right circuit it could do some work. maybe a few led's.

lots of tesla and magnetics research and im not sure i answered anything really. guess time will tell. good to see you guys still kickin around here even if the group doesnt seem to be truckin it along as fast as it used to.