Joule Thief 101

[MileHigh]

Well, you see....

when you are out on the dance floor, surrounded by Trons and Hoes...

It doesn't really matter what your theory is,
the fact that you bothered to participate Is all that is necessary to get laid...

You will recall this posting #390 from you with your little treatise on diodes for me:  http://overunity.com/8341/joule-thief-101/msg474966/#msg474966

once you learn this, we can move on to the concept of capacitance, within the diode.

maybe tomorrow I can teach you how a WIRE works....

Later I said this:

Depending on which tune is playing the trons and the hoes might eye each other across the dance floor on opposite sides of the room like so many wallflowers.  Then the DJ puts on a new tune and the trons and the hoes race towards each other in the center of the dance floor in a frenzy and make contact and seemingly leave this plane of existence.

The DJ is really good, and as the Millenniums say these days, "He is dope."

Well, you see....

when you are out on the dance floor, surrounded by Trons and Hoes...

Smoky2, they just flooded the dance floor with smoke....

I was describing a diode to you with my dance floor story.  Looks like you slipped on the smoke oil trying to do your best John Travolta.

MileHigh
   

[tinman]

Here is a circuit from Lasersaber that seems to use the 'capacitance' between the 2 windings to complete the base trigger circuit. lrC anyone?

Mags

Maybe use the negative resistance effect of certain transistors to make an oscillator?


Brad

[Magluvin]

Played with different turns ratios. Seems to work best near 1 to 1.  Found a wound core from a pc supply that has 4 separate windings. Nice n tight and evenly wound. Going to try 2 windings in series bifi to increase capacitance and possibly lower the resonant freq and use a 3rd for trigger. And try putting led across 4th.

Mags

[Pirate88179]

Played with different turns ratios. Seems to work best near 1 to 1.  Found a wound core from a pc supply that has 4 separate windings. Nice n tight and evenly wound. Going to try 2 windings in series bifi to increase capacitance and possibly lower the resonant freq and use a 3rd for trigger. And try putting led across 4th.

Mags

Have you ever tried the "Jeanna" circuit?  I would have to check my video but I think it was like 400 turns, 13 turns and 4 turns (3 windings) and used a TIP3055 transistor with a 22 ohm resistor.  Outputs about 700 volts.  Lidmotor has a great video on how to make one.


Bill

[Lidmotor]

 Here is 'Jeanna's Light'.  It was very popular back in those days but we ran out of a good source for that big old ferrite toroid.  Jeanna found them at a surplus outlet and they soon ran out of them.  I only got one.  This light ended up 'boxed' and is on my shelf still today. It runs better on a little higher voltage.  Bill--I think that is what you did on your build.  Here is that 1/2 million hit video I did that got so many people excited:  https://www.youtube.com/watch?v=KAakZTR_4LE

  I have been working on a blend of Tinman's circuit and my Penny oscillator and I have had great success so far.  Slider is working on it also.  This Joule Thief topic is very interesting to some of us old tinker types who let the technical discussion guide us.  Thanks.

---Rusty