Joule Thief

[Magluvin]

I hope you don't mind me jumping in here.

http://www.youtube.com/watch?v=CAkgwBS8q4A

Excelent.     Thanks for putting that up for me.

Do you know what the input power was with that? The battery seemed to drop pretty good. Was it a rechargeable or throw away?  Got the Lasersaber motor goin and it could really move if it had 100v always available, and I thought maybe a JT would be the best way to do it. I put up my first vid last night, maybe you have seen it already.

So the jt needs a diode across the output in order to work?

Thanks again for the quick help. I owe ya one. 

Mags

[TinselKoala]

Excelent.     Thanks for putting that up for me.

Do you know what the input power was with that? The battery seemed to drop pretty good. Was it a rechargeable or throw away?

It's a standard alkaline AAA cell. With open circuit voltage of 1.32 or so it's pretty depleted already. I haven't measured the input current on this one lately, probably should do that.

Got the Lasersaber motor goin and it could really move if it had 100v always available, and I thought maybe a JT would be the best way to do it. I put up my first vid last night, maybe you have seen it already.

No, I'll watch it now. I think that motor doesn't draw much current, so your idea would probably work, maybe.

So the jt needs a diode across the output in order to work?

Thanks again for the quick help. I owe ya one. 

Mags

No prob, mate, glad to have something relevant to show. This one now lights six NE-2s in series, and I've measured the open-circuit output on the scope to be over 600 V.
Yes, it needs the diode in order to light the neons, but it still works fine as a JT and makes high voltages without it. Weird, huh?

[Magluvin]

Very cool. Had not made a jt yet. Time to put another notch in the soldering iron.

Thanks again

Mags

[SkyWatcher123]

Hi folks, well, had another look at the circuit posted earlier and made an experiment without any coils, just one AA, then used two AA's to mimmick a higher voltage collapsing field through capacitor and diode.
Nothing flowed as one would expect.
Soo, based on the observation of the gutted bulb fading out once in awhile when manually pulsing by hand the primary of the joule thief oscillator, leads me to think that when the secondary coil collapses, it either inductively interacts with primary coil to create a ringing, which would then give many proper polarity pulses to cause the led bulb diodes to conduct or the secondary coil is collapsing within itself to create the ringing, which does the same thing.
Anyone, please chime in here if you have any ideas on this, though this seems to make the most sense so far.
peace love light
tyson

[totoalas]

Hi folks, well, had another look at the circuit posted earlier and made an experiment without any coils, just one AA, then used two AA's to mimmick a higher voltage collapsing field through capacitor and diode.
Nothing flowed as one would expect.
Soo, based on the observation of the gutted bulb fading out once in awhile when manually pulsing by hand the primary of the joule thief oscillator, leads me to think that when the secondary coil collapses, it either inductively interacts with primary coil to create a ringing, which would then give many proper polarity pulses to cause the led bulb diodes to conduct or the secondary coil is collapsing within itself to create the ringing, which does the same thing.
Anyone, please chime in here if you have any ideas on this, though this seems to make the most sense so far.
peace love light
tyson

hy tyson
can u try the following
from + add diode going to top of secondary   adding ac and dc imy ssg output produced very bright led lamp output a combo of ac and dc
peter lindermann used this in his ignition coil
Minoly in his latest ckt use to combine the ac leg with pos of bridge rectifier
in my pmbo 2013 build off
when my power supply adaptor has leakage  meaning only neutral ac is connected to input and output is one leg pos is connected to circuit
8 pcsx of 5 w led lamps 220 v ac  were all 100 % bright