Joule Thief

[stprue]

new air core direction.

Did you make that yourself or buy it?

[stprue]

@ MK1 @ Jeanna @ People that want precision tuning!

Here are some nice precision POT's

Good site and reasonably priced!

http://www.web-tronics.com/passive-electronic-components-potentiometers-precision-10-turn-potentiometers.html

[WilbyInebriated]

@altrez
thanks! no performance data yet, it's just a mock up at the moment. i need to redo the primary and varnish the secondary.

@jesus
i plan to run it on as little voltage as possible and still light a ccfl. i am not sure it will even work using a jt as the oscillator section of the circuit, but i am curious to see if it will.
i am going to also wire it up as a traditional jt for some quick measurements once i get it tuned.

@stprue
i made it myself. the secondary form is a tube that used to hold candy (mini m&m's) about 5" tall. it took a hour or so to wind. the primary was wound on a film canister and then removed, but it needs to be redone.

[innovation_station]

im haveing fun now ..

lol

insted of a ring  i made a rod feroite unit ... 

im lighting 24 leds plus i can scope as much as 120v so far  and ..

it is tiny and damm sipmle to make ... 

7 turn bifillar primary fone wire ... and 100 turn 28 ga ac winding  sloppy overtop of it

dont have to be round ... lol 

ist

this is the. IST MINI.   with a bit of work ill get it to lite a cfl ... it is about 5/8 of an inch long ...


it has a verry neat wave to it ...  i can tune it to be pure sine output ..  but the ringggie spike looks neat and works better .. 



ooopps    just got done the bobbin style too ...  i can put multi turn picups on here too or more or less for volts....

here is a few pics of the rod unit and a scope shot of it

scope is 20v/div ...  this is wile powering the 24 leds ..

[stprue]

@altrez
thanks! no performance data yet, it's just a mock up at the moment. i need to redo the primary and varnish the secondary.

@jesus
i plan to run it on as little voltage as possible and still light a ccfl. i am not sure it will even work using a jt as the oscillator section of the circuit, but i am curious to see if it will.
i am going to also wire it up as a traditional jt for some quick measurements once i get it tuned.

@stprue
i made it myself. the secondary form is a tube that used to hold candy (mini m&m's) about 5" tall. it took a hour or so to wind. the primary was wound on a film canister and then removed, but it needs to be redone.

Nice job! It looks good.  Yesterday I was looking into info on teslas flat pancake coil!  I want to build one of those!!!