Joule Thief

[jeanna]

Hi everyone,
I took a break this afternoon and watched some youtube videos.
gotoluc has some awesome tutorials on how to know when you have resonance without a scope.

In his tutorial he says you must have a signal generator, but, I really think you can use a joule thief as the signal generator and adjust the base resistor.

Anyway, I noticed with all of Luc's examples as the resonance went up the voltage went down.

He was not looking there, of course, but as he added caps and lowered the freq or raised it every time the frequency went one way, the voltage went the other. Right up to resonance. (Maybe including resonance too. That is hard to say on someonelse's screen, but it sure looked that way.)

I Also saw one from um kubicop? or maybe lidmotor. This was a couple of days ago. He was showing a nice wave and showed what happened when he stuck a neo onto the toroid. It stuck hard and the frequency doubled. Bam!, there were suddenly twice as many waves on the screen.

That is what he noticed, which is important.

I happened to notice (one commenter did as well) the volts went very much down too. I cannot say how much, but here is the pattern again and people are making it happen all over the place.

coool.
thanks Luc and kubicop,

jeanna

PS. Really, I was having a bad battery day. (like hair only different.)

TinselKoala
It was a stupid mistake that I made with the switch, so don't get excited about that. There are far more really exciting things going on here. And we are getting high frequency without the stupid mistakes. Like the pickup coil resonating at 2.2MHz on the 12th turn using a 10,000pFcap across the base resistor...

[Pirate88179]

@ All:

I just uploaded another video to youtube:

http://www.youtube.com/watch?v=A4gRDwPqSz4

This is my earth battery running a joule thief and lighting 4 ultra bright 10mm 28,000 MCD LEDS to full brightness!!!  I think I can light a lot more.

This is still just a regular JT although this time I made one for this circuit with a toroid instead of a bead.  This is so cool!

Jeanna, you are gonna have fun with this over the summer I'll bet.

Bill

[electricme]

@Bill,
Well done Bill, I have just taken a look at your latest video on Pirate Labs, those 4 LEDs are lookin really good now, I envy you, lol, I have got to find a supplier for magnesium bars and those huge carbon rods.

You are setting the pace here now, ha ha, after seeing what you have done, we all should be breaking our necks to replicate it.

If I was you, I would seriously consider running a set of wires into your abode, and set it up from there.
If you put a bridge diode on the output, see if you can charge a 12v battery, would you have enough power to run the Bedini?

Jim

[TheNOP]

is it not a source? funny its taking a charge from the battery and powering the curcuit thats an additional load with no increase!

secondly. if its not a source how can we use a cap to power curcuits for long periods of time with the supercaps? and dont say thats different cause its not! sure a supercap may be slower than a regular electralytic which i have not seen any documentation to prove this accusation but for the sake of argument lets say its true. then it has a slower response but that is the only difference.

now lets debate this one, if a cap discharges at the same time of the battery doesnt that double the amps? the only way to control that is to actually limit it in a power control and supply curcuit? i mean if twice the amps are available per pulse arent they going to be used? there is no limiter here to the current that should flow!  well none that has been identified as of yet that im aware.

look, a cap in parallel with a battery can be compared to a pump and a hot water tank.
as you take water out of the tank, it is replaced with new water from the pump.

the water tank in itself does not use the water, if you don't open a valve, the tank does nothing, the pump either.

if it is presurised, it can be used as a "pump", but what is keeping the pressure is the water pump.

in times of need.... so it wont discharge given the chance? seems to me we are giving it 2mhz worth of chances to discharge completely.

yes the filtering or smoothing of current has been addressed but is not a concern for this particular instance.

given the chance, yes.
but even at 10GHz is won't have the chance unless you give it time to do so.
don't forget there is a battery replenishing it too.
it would be easyer to do so at 1Hz, the cap discharge time is related to the circuit resistance and/or for how long the circuit is closed(currents circulate)

[nyctuber]

@ All:

I just uploaded another video to youtube:

http://www.youtube.com/watch?v=A4gRDwPqSz4

This is my earth battery running a joule thief and lighting 4 ultra bright 10mm 28,000 MCD LEDS to full brightness!!!  I think I can light a lot more.

This is still just a regular JT although this time I made one for this circuit with a toroid instead of a bead.  This is so cool!

Jeanna, you are gonna have fun with this over the summer I'll bet.

Bill

They ran the telegraphs off this if I'm not mistaken. Very cool thanks for the video.