Joule Thief

[gadgetmall]

Hi Mark Its an exact replica of the hazen1  3 7 150 on goldmine toroid. i have  several more roids like it . and yea i tested one  of those  toroid with  2 20 turns and its bright all the way thru the range of 5 ohms to 330k as a normal Jt . also tried another one 11 turns . very good normal jt . .. I assumed this Jt toroid was being used By many with excellent results . The hazen coil has to be rewound here  . Im going to unwind it where it reached the other side before i go backwards and check it there . then im going to do it with 20 20 what ever .
At the present it will only oscillate at 10 ohms with a cap across the base . this is not good . I know . Its not matching with 3  7 . unbalanced some how and my transistors don't like it .no resonance at all . I don't think My Tank will help this sucker . .. ok back to you after i get thru with Being buzy  Its just it was so perty i had to try    Now i need your power to light My fire !!!!!!!!!.I'm ready im ready . I can do big things with tiny inputs but i want Rf Juice now to burn and shock . My stuff i can put on my lips like a 9 volt battery .. you are on top of it .

Jim nice going mate . Tis awsome . and Hazen1 . you must have the magic toroid 

Gadget

[jeanna]

I decided to take out the turns in pairs and look at when the bjtl goes on.
It still isn't on in the regular way, but now after removing around 8 pairs of turns so around 134 turns IF I use the 103K which is the same as 100nF cap across the base resistor the light goes on blazing on.

but the secondary still only produces 0.25V as shown on the scope.

I will keep on unwinding in pairs and let you know when the BJTL returns to the on situation.

jeanna

[electricme]

@All,
I finally got TinyCAD to fireup, had to import its libraries by hand.
It turns out this is an install problem.

@Gadget,
Keep going with your toroid, it wil work.

I pulled my toroid out of the front panel of a standard tower PC, the power, LEDs and Turbo switch wires make a single turn through it.

Here is Hazens1 Circuit I have modified to my JT here

jim

PS can anyone tell me how to alter the width and heighth of this circuit, (the white bit or background) please.

[Mk1]

@gadget

You need less turns on the jt side , otherwise you will not get those high voltage easily.

@electricme

Don't forget to test other diodes ! those are 400 volt you may have more then that !

Mark

[Pirate88179]

@ Jim:

Nice drawing.  I did not pay attention to your warning and, while studying your drawing, I touched the yellow areas on my screen and I got a pretty good shock!  Just kidding.  Nice job.

@ All:

Uploading, as I type this, is yet another video.  This time, I have illuminated a 48" tube with the earth battery/joule thief/supercaps circuit!  I can't believe it works!!!

I will post a link shortly.

bill