Joule Thief

[Koen1]

Cheezes Jim, that's one huge ring core you found there!

With that much space to play with, I'd try a fullblown 2-phase Tesla
toroid... So that's at least 2 seperate sets of 2 oppositely placed coils,
each set wired in series and both sets fed an input AC signal that is
90 degrees out of phase, so as to produce a rotation of the two
magnetic poles in the ring core. Then use two sets of secondaries or
"pickup coils", also consisting of oppositely placed coils, one set
connected in series and the other connected like the JT primaries.
But yeah, how to get the 90 degree off phase? Idunno.

If you're "just" going for JT action... Well I suppose you could
wrap several basic JTs and use them at the same time...
But I'd expect the result to be the same as what you'd get when you'd
just use a higher input voltage and current in a single JT primary.
You do have a lot more room for "pickup" coils on that toilet-sized
core, so you could of course wind a crazy huge number of turns
for a pickup coil and get crazy high voltage out...
A 10 turn JT fed 1V with a 10.000 turn pickup should give out nice
1000V pulses, if all goes well

regards,
Koen

P.S. does anyone have or know a cheap source of ferrite U- and I-cores?

[WilbyInebriated]

Iwas just looking arround and found this interesting thing

With PR4402 PREMA Semiconductor offers the next IC in a family of 0.9V LED boost drivers, operating white LEDs from one battery cell. While PR4401 is best suited for LED currents of up to 20mA, PR4402 is capable of 40mA. The current is set by the inductor value, resulting in a low number of external components. Applications are pocket torches, key ring pendants or head lights and LCD back lighting in single-cell devices like MP3 players.

The one-cell battery operation is very attractive. It allows design of smaller and light weighted products at lower cost. In multiple-cell operation of rechargeable batteries often one cell can be destroyed by a deep discharge. With the PR4401/4402 there is no more reason for using several battery cells or for implementing the classical light bulb. With one battery cell and depending on the application one inductor only as external component, a very small-sized circuitry can be realized with the PR4401/4402, both SOT23 packaged. The driven LED current is almost independent from the supply voltage, which guarantees a constant brightness even with a discharging battery.

this was mentioned back on page 6 of this thread. see my post http://www.overunity.com/index.php?topic=6123.msg141252#msg141252
in response to spinners at the top of the page.
newer is not always better. the chip requires 25mA. so, all the technology in the world has not surpassed a hand-made circuit.
great to see you doing research on it though. 

[innovation_station]

say iaiii yiaiii  boom !!


lol

so got my big ring running ...     sure i fired the scope up

if you touch the outputs ...  you FEEL IT ... 

with out any diodes ..... 


i have been able to see a few hundred volts on my scope ...  the thing sings with or  without a load tranny or not tranny the thing SINGGGGGSSSS LOL

i can see sparks if i short it ...  small ones but i C EM

jim   YOUR NUTS LOL    you gonna split the 3 jt?   so you got 6 pushers ...  and drop collectors in between them ?!?!?!?! 

william

so next i need a BATCAP!!   

i will add diodes today and scope it and MAKE YOU FINE PEOPLE A VIDEO ... 

CAREFUL WITH THIS UNIT IT BLOWS THINGS UP     

[Paul-R]

I was just looking arround and found this interesting thing

With PR4402 PREMA Semiconductor offers the next IC in a family of 0.9V LED boost drivers, operating white LEDs from one battery cell.

I found this datasheet for you:
http://www.prema.com/pdf/pr4401.pdf
Paul.

[ScienceMan]

@Ist

A few hundred volts - thats alot. Nice

@Hazens

That is the draw with no load.

Ok cool

Any load put on the pickup coil causes the amp draw to drop. The more I load it, the more the amp draw drops.

Ah thats the amazing thing behind the JT coil... wow! So it has a similar effect as the Bedini motor or radiant energy (correct me if I'm wrong)... Awesome...

@All

So does the JT have something to do with radiant energy?

Thanks

ScienceMan