Joule Thief

[jeanna]

@Jeanna

Try something for me , try a toroid directly on the EB , 2 coil on the toroid , make a small and large coil , then connect one coil on the EB, check the the other coil , then try the other way around .

I am afraid I do not understand your request.

You want me to pass the earth frequency and voltage through the toroid using one winding then look at it through the scope through another winding?

Are there any special numbers you have in mind? Just straight winds?

It will soon be dark.

I will see if I can find one or very quickly make one and have a peek.

jeanna

[xee2]

@ jeanna

On the other hand, Tesla says the higher rate of increase (in volts) is more important than just the increase, indicating that the fast veritcal spike is able to deliver more.

This is also correct. The coupling between coils depends on rate of change only. So fast rise in collector coil is good. In pickup coil, area is good because that is what will deliver power to load. So in general I think you are correct in saying that rate of change is most important in JT.

[jeanna]

.. In pickup coil, area is good because that is what will deliver power to load.

In the pickup the area is the important thing so I have not been wasting my time trying to get a fatter curve in my pickup coils?

This is comforting at the end of a frustrating day. 

So, thank you,

jeanna

[jeanna]

@Jeanna

Try something for me , try a toroid directly on the EB , 2 coil on the toroid , make a small and large coil , then connect one coil on the EB, check the the other coil , then try the other way around .

OK,
I used my little tor-23 for this. It is the one that gets high frequency the easiest.

I wrapped 5 turns around it and on the other side wrapped 15 turns.

I connected the 15 turns to my scope and went outside and connected the 5 turns to the earth battery. So, this should multiply the EB to 15 times the voltage or at least some more?

nothing.
down to 0.005v per division and anywhere from low to high frequency range, there was nothing on the scope.

the scope was reading 2/4MHz the other morning.
I will do it again in the day. I think the sun in the sky above does help the eb, so on the chance that it will show me something, I will do it again. first with just the EB across the scope probes then the toroid as transformer .

15 turns may be too little to see a transformation effect.

Oh and the dmm sees 0.771v across those 2 wires. Pretty little!

How would you suggest connecting a joule thief wound toroid directly to an eb?

jeanna

[electricme]

@Altrez
OKi-doki

@Jim

Got your V-Main Lets talk if at all possible this next week. Working hard and hav been away from the lab / kitchen table.
Should be free a few nights this week.

@all

WOW I can not keep up with all the posts. This is indeed very exciting stuff.

Take care!

-Altrez

I see there is a disagreement on who had the Kitchen Test Bench/Dinna table lol.
OK Al-J I will try again next week  I had to stand way off from screen to work out  some of it.

I will make a flat cutout of the world and put a axle in the middle, with the sun on the left and see if this world computer will give me a better idea on the right time to ring you.

jim

@all,
I think I will tear up my EB and see what they are doing.

@Gadget,
Make a double Joule Thief out of one of your big carbon rods, wind on it that layer which the half stitching on it, all the way from end to end.

Then see if it can use the magnetic field from it.

jim


@all,
I have successfully made a QUAD output from a Joule Thief.
I used a stock standard toroid.
Wound the usual stock standard JT on it.
Wound the 4 separate secondaries, but I twisted the 4 strands of wire in the drill, then hand wound the toroid.

65 turns = 65 volts on each output.

I can run 4 separate circuits, just by the single JT.

If all the loads are identical, then the load is shared, if the load is heaver on one output, it drains some of the other 3 energy from them.

@Jeanna,
Adding a diode to the EB will cut back voltage output by the amount the diodes forward volt is set eg if the diode needs .6volt before it will pass, and the EB puts out 1.0v you only get .4 volt out
I tested this yesterday, Geranium diodes are the best to use.

You might be able to use a transistor also. Connect  just the Base to EB, connect emitter to load, collector leave free.

jim