Joule Thief

[xee2]

@ jeanna

I do not know what parasitic capacitance means, and I would like to.

Sorry. I should not have expected that you would know what that means. It is the unwanted stray capacitance in a circuit. It is called parasitic because it is usually draining away energy that should be going somewhere else. But from your comments it seems that you are correct in assuming that the problem is the amount of inductance in the coil changing.

[jeanna]

@Ist,
I cannot open that.
This is the second time this week something is not openable. It may be that I need to download something.
But maybe it didn't get uploaded properly?

@xee2
Thank you.
Stray capacitance must mean a spark. A tiny one.
Tesla talked about how that was the biggest problem when using high frequency high voltage, so it makes sense that this is what it means.

Capacitors/condensers collect and store energy, then make sparks when they let it go.
That would certainly dissipate the energy in the wires. If the wires passed their charges to one another magnetically, it would not be much of a problem.
So, I must conclude that this is that hi frequency sparking Tesla was talking about.

===
My coil never got above 50v
It kept going down then up to 50v
I tried to tune it, but there was not much room starting at 29 ohm. so the transistor heated up a lot, but the system still never got above 50v.

So I conclude that you, xee2, are right in suggesting there is capacitive coupling happening here.

But there will be no boiled oil happening here! 

I may just try one more thing before I put this away. I may just use one layer. I can get a few more turns on than 16 so I will see how far this little toroid can go.
Then I will stop.

thank you,

jeanna

[xee2]

@ jeanna

Stray capacitance must mean a spark. A tiny one.
Tesla talked about how that was the biggest problem when using high frequency high voltage, so it makes sense that this is what it means.

No. Not a spark. For AC a capacitor acts like a path for the energy to flow through. The stray capacitance is just the capacitance that is not actually a physical capacitor. When a neon or fluorescent tube is lit with one wire, the other connection is through the stray capacitance between the tube and the circuit wires.

[innovation_station]

i added 2 more videos of scope shots of 2 freq 2 neo 180 deg of neo seperation on a jt with an equal pickup .....only 1 lap no acceleration on this one lol lol 

ist

http://www.overunity.com/index.php?action=downloads;sa=myfiles;u=4557

yikes are those all SPIKES ....  SHEESH  ... 

this is the coil all the scope shots today came from ... and videos  just 1 jt was powered i did wind 3 on it it was going to be a 3 phase rotating self accleerating magnetic feild unit ... 

but ill build that on a bigger ring .... 

any one ever short a coil on its self on a jt maybe with a few laps ...... 

[innovation_station]

in the empty places on the toroide is where yes my shorted out multi lap winding and my collector coil or pick up coil mutli lap aswell will be going ......might try a 50 wire litz style pickup lol ...  but its not big enough ..   ill build it bigger and probally try for a 4 turn jt 3 phase ... 

coils all wound same dirrection .... 

ist

so i did wind in there a 60 turn picup coil 4 15 layers back and forth 80" 26 ga magnet wire .. 

and yes i can still tap the other unused jts and the 60 turn coil is 120 v  jt coils bout 55 thease are scope peek voltages ..

ok so now thats done how bout a mk2 pickup transformer winding on top of the 3 phase jt coils... just a small one for feed back ... 

then ontop of all of them a lower gage 22 maybe shorted on it self 6 laps .....  hummmm lol