Joule Thief

[jeanna]

I tried a little something with the conical pancake today.

EESH
I wound a wee little jt on a 3/4 inch toroid, then I made a 6 turn secondary, and
It went into resonance with a beautiful ring looking like a ring.
with 6 turns it makes
70v
33.8khz
56mA

now, 70 volts will light up 10 leds nicely and that makes 5.6mA each.
But the very best part is that the resonance does not quit.
Whenever our batteries run down, the circuit goes out of resonance.
I have not seen this go out of resonance yet.
It makes sense because of the conical shape.
This looks like a mini wardencliff tower.
I have not yet made a Dr Stiffler radiance tower. I better make one so I get how to connect things, or what happens.
Maybe jonnydavro's pie pans will work.
I want to scale this up, but I am not much with building these things.
Have a look.
It is short and basically unedited.

http://www.youtube.com/watch?v=I9fbn01_clA

thank you,

Jeanna

[Pirate88179]

Jeanna:

That is very interesting.  How many turns are on your conical coil?  Was it mag wire or insulated stranded wire?  If we can figure out why this does this, it will be a good clue for us.  I wonder what Jonnydavro would have to say about this?  You should pm him on Youtube and attach this video for him to see.

Bill

[freepow]

@ Jeanna

Are all your 10 LED's lit at there brightest with your small JT ??
You have 6 turns on secondary, how many other turns on toroid do you have

Is your current draw 56 mA

Or would 1x LED light brighter than your 10 on this JT of yours??
What do you mean when you say the resonance does not quit ?

[resonanceman]

I tried a little something with the conical pancake today.

EESH
I wound a wee little jt on a 3/4 inch toroid, then I made a 6 turn secondary, and
It went into resonance with a beautiful ring looking like a ring.
with 6 turns it makes
70v
33.8khz
56mA

now, 70 volts will light up 10 leds nicely and that makes 5.6mA each.
But the very best part is that the resonance does not quit.
Whenever our batteries run down, the circuit goes out of resonance.
I have not seen this go out of resonance yet.
It makes sense because of the conical shape.
This looks like a mini wardencliff tower.
I have not yet made a Dr Stiffler radiance tower. I better make one so I get how to connect things, or what happens.
Maybe jonnydavro's pie pans will work.
I want to scale this up, but I am not much with building these things.
Have a look.
It is short and basically unedited.

http://www.youtube.com/watch?v=I9fbn01_clA

thank you,

Jeanna

Great video Jeanna

I know  you have been doing the conical coil  thing  a while ........ I have been busy with other struff......... I have not kept up.

Have you tried  a bifilar conical coil JT.......I mean only bifilar conical coil.........no  toroid .?


gary

[resonanceman]

Jeanna:

That is very interesting.  How many turns are on your conical coil?  Was it mag wire or insulated stranded wire?  If we can figure out why this does this, it will be a good clue for us.  I wonder what Jonnydavro would have to say about this?  You should pm him on Youtube and attach this video for him to see.

Bill

I  would say from my playing  with my longwire JT and because   the  toroid needs to sit on the conical  coil that the conical coil  becomes  part of  the secondary

The fact that it does not drop out of resonance easily  may  make  a huge  difference in the efficiency  of the stuff we build in  the future

gary