Joule Thief

[jeanna]

Yes a diode on one lead and a ceramic cap on the other and tie the end of the diode and cap . Also it matters which way you put the diode and on which lead of the secondary . try until you get the highest

I only have the can type. I have not found anything that is bigger than .1uF in a ceramic cap. I will try it and see.

I assume I tie the ends of the diode and cap together and they are both as one unit inside the leads as parallel to the ends of the fluoro.
I will try that which I just described. If this is not what you mean, I will see what you mean after I try this. OK?

jeanna

[gadgetmall]

OK First I took a fresh picture.

the red wired one is the filter G16214 as it comes with 2 pair winds of 19 turns each.
The next is that with the 3T4T92T on it as a MK1

then a little bare Tor-23 from allelectronics. It is too small, but it makes great little lights. When wound it is just about the diameter of a AA battery. The berry and xTree and widow were all made of this.
The last is wound like the widow but with newbie wire. It really makes a great slim jt. This gets about 50volts very reliably.

jeanna

thank you Jeanna . Nice Pictures and that Is  fat Filter . Gray . . It looks like it is Machined very well with smooth edges . .
You wont light up any Christmas light with an electrolytic on the output of your beefy one . use ceramic . 104 if you go em . you might try the two stage voltage doubler . 2 diodes two ceramics  on the out and see if they light then . It might be polarized . i notice when i run them they are very bright one way only .  :idea:

[Artic_Knight]

Hey Jeanna,

You guys are hard to keep up with...between that and the Black Hawks on TV while I am catching up is affecting my attention span.

In case you didn't know...the last time they won the cup was in 1961...and they are close again for the first time since 1992.

I even plan on giving the screen a good cleaning if they reach the finals, so you know its big.

So needless to say I am a little distracted at times.

I do recall your 2 T j/t though.

I hadn't considered your application yet...I was just theorizing more along the lines of the single j/t providing the amplified voltage to the Tesla air coil transformer.

Your double toroid advancement would probably have dawned on me somewhere down the road.

I must say, you guys are in danger of doing significant things the way you're going about things.

Regards...

if your thinking of using the JT as a power curcuit to the tesla transformer then yes it should work fine. find a good high frequency curcuit design here on this forum (so many different designs with different bennifits!) will work and you can add a third coil like the way they have been using it to light CFL lights to excite the primary winding on the tesla "rod" portion. then take a large coil put it in the middle of the primary off the JT and ground one end while creating an arial with the other. that should work nicely. im not confident a single AA will have the push needed for this but hey it might! to have a spark bridge a air gap of 1/4 a inch it required 20k volts! thats a lot! im sure with some tinkering one could use a 12v car battery and this curcuit (would require additional/different parts) to do just that. or i think one could use the JT for the frequency generator and bridge that to a mosfet to allow for the 12v car battery to run through a step up transformer and to the primary of the tesla coil itself.

[Artic_Knight]

Wow. This circuit is lightling the fluorescent tube brightly with only 51 ma.

i wonder what 1k turns for the CFL would do then? do you think its the turns for the CFL connection thats producing the brightness of it? it looks that way.

[jeanna]

thank you Jeanna . Nice Pictures and that Is  fat Filter . Gray . . It looks like it is Machined very well with smooth edges . .
You wont light up any Christmas light with an electrolytic on the output of your beefy one . use ceramic . 104 if you go em . you might try the two stage voltage doubler . 2 diodes two ceramics  on the out and see if they light then . It might be polarized . i notice when i run them they are very bright one way only .  :idea:

The grey is a paint, er it comes off if the black rubber glue is stuck too hard and I yank it off when I pull off the red wire.

OK one of each doesn't work yet on the fluoro. I will check the string o leds before I add another diode and 104 cap.

I just looked with the scope.
Without anything the voltage across the secondary leads is
285V
add a diode 2N4007 in one direction and it drops to
50v
turn it around and it hits a low of 2.5v or was that .25v.

I can try just the cap, or maybe I did?

thank you,

jeanna