Joule Thief

[xee2]

@ altrez

@xee2

I have got over 1000V on my 2.9inch toroid with 300 turns. using a 2n3055 and a pot. 18/18 on the primary. So looking at my results. I aggree with you its going to be very hard to do it on a 1" GM .

-Altrez

That seems to check. I was getting 600 volts on my 2B-10C-80P 3.38" toroid.  So the prediction would be 1200 volts with 320 turns.

[jeanna]

@ jeanna

The equation assumes that the only thing changing is the number of turns on the pickup coil. The toroid, battery voltage, turns on other coils, etc. must all remain the same.

I am glad you made that clear.
It isn't what I meant, though. Sorry.

I meant, the mk1 with its up down/back and forth might need a different ratio under that sq root sign from the straight one.
I will be checking for that because I make that kind too.

This is going to be a good tool, thanks,

jeanna

[innovation_station]

finished my next coil ...

same as the last one but i made it with 13 turn jt ..

and 13 10 turn collector / picup/ accelerator   i went around the ring 2 times 10 turn jump 10 turn jump  13 times then went around the same agin ... so a total of 260 turns 30 ga magnet wire

the result is ... a VHF coil my volts are lower than 1 lap .. but the freqency is like 10 or more .. times than the 1 lapper

and when i slowed my scope my pulse length is the longest i have seen it ..

output is about 75 v on the scope  wont lite a neon  but it sure is lould

ist!

[jadaro2600]

@MK1
Very good find Mark, excellent.
jim


Actually I'm thinking about using a evacuated glass tube (dont know how long it should be) which has a electrode at either end, which is in turn wrapped in a coil of wire, then fire a spark through the tube, the spark travelling through the tube opens the aeather channel and the radent energy gets dumped into the coil around the glass tube.

Well I could be wrong, who knows, I would try this with the above glass cone I posted above but the glass coils are far too close to wind any wire on them, it looks so fragile, just breathe on it and it might break lol.

jim

Have / has you / anyone considered using a blown automotive bulb as a spark gap?  The glass tube with the crimped ends are easy to come by ..the only thing that governs it's performance is the nature of how it blew in the first place, it can create unpredictable behavior, but still creates a spark gap.  Most commonly they're used in turn signals or brakes.

[stprue]

@all

What do you think of this?  I know MACEDONIA has been around for a while but I don't know much about him?  He has sent several personal messages on his TPU experiments.  Is he legit?  If he is he should come join us here as well!

    (No subject)
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