Joule Thief

[jeanna]

What do you think the shape of this would be?  Air coil...humm maybe you could wind around a hollow plastic core.  Thick wire underneath going around the air core (maybe not all the way around, maybe just a few turns) and then thin wire going over everything??? (maybe not the few turns?)  Well time to start experimenting!

Stprue,

This guy Bill Beaty is teriffic. He has an interesting bio, and he is a great teacher. He was the one who "created" the lightning exhibit at the Boston Science Museum, but he lives near Seattle, I believe.
Anyway he is a near as your browser.

These 2 pages will get you connected with his brilliance.

(one is directly about our joule thief as in well... see for yourself.)

http://www.eskimo.com/~billb/tesla/tesla.html

http://amasci.com/tesla/microtc.html

Enjoy, but be sure to come back!

jeanna

[Artic_Knight]

@AK
From time to time people like to make suggestion about where this thread should be aiming.
If you do it yourself and report it and have questions then the thread WILL go in that direction at least as much as you are doing it.

The magic of this group has a lot to do with the self direction from the members. We are following our creative bliss.

Now for mine! 

jeanna

agreed jenna and i wouldnt want to stop any experiments in other areas however judging by what we are doing and going i would say we should start to move twards air cores.  dont get me wrong torriods have their place and may prove to be better for the particular curcuit at hand but it would seem to hit those higher frequencies and potentially better energy efficiency we may need to consider dropping the doughnuts. :-p

the thing about experimenting is you have to try new things, cant stick to one thing or its not experimenting. and this forum is definately doing just that, experimenting!

[xee2]

Another neon lit with one wire but using 20 turn collector coil.

[hazens1]

Hazens1 is there a particular reason you choose this model over some of the lower perm models of the same toroid?

I chose the largest High Flux they had in stock. I wanted a lower perm, but they did not have in stock, so I went with this one.

[stprue]

well tesla used his pancake bifiliar coil as the primary on the air coil and it was in a cone shape. what i plan to do for my air cores is to take a tube of sorts (non conducting either cardboard or plastic) wind a fine wire till i cant stand it any more. 1 layer thick down the core. then with a ticker wire wrap a bifiliar 5 turns down in the center of the thin coil by center i mean from tip to tip put it in the middle. after connecting the ends like tesla did you should get 5 turns down then it returns to start and another 5 turns down.

i had the same coil design posted in a pic form a few pages previous. (probobly 50 pages by now)

I see I will do a little research  on this.  Thank you for the info.