Joule Thief

[jeanna]

@all

My new Toy i called it the Tricycle , Yep 3 jt on a single toroid, But why mark?
Well for fun , but only one circuit is connected to the battery , the two other circuit are feeding of the toroid and are NOT connected to the battery in any way , so 3 jt for the juice it takes to power one !

Nice work, Mark.

So, the output from the first fills the cap which acts as the input to the second which fills a cap which acts as the input for the third?

This is the same kind of thinking without the caps I was using for the 2 tier. But then I found that I do not need the second transistor.

Have you tried to use a LOW value cap so it can follow the switching of the first level transistor?
You may also be able to eliminate the two second  level transistors?

That might be worth doing since the transistor is the juice drunk. (sorry american joke)- it is an energy waster.

This would take some tuning type of work and patience. You abound in this attribute! It would need to be the smallest cap that would allow the switching to stay like the switching of the transistor. I was using what I had, and I do not know the limits or the overlap, and there is an overlap.

So, I found it needed to be a small cap I used a ceramic cap, and this allowed the switching to occur to a certain value of volts. If I used a cap that was too large value, the switching slowed down.

I am not comfortable with the small and large features of the cap design, but I think I stated the parameters.


Very powerful this multi level joule thief.

I have been trying to make mine in thirds also. I just wonder how it works so well for you if the place at 180 degrees is such a dead spot.
Maybe it is not such a dead spot, after all?

Thank you for this inspiring drawing.

I thought I was going to solder a normal jt with secondary to a battery today, but this looks like too much fun.
I am going to try my suggestions I just made to you, instead. HA!

thank you again, Mark!

jeanna

[Mk1]

@jeanna

so far my tricycle 2nd and 3dr circuit are only powered by the coil the cap charge it self , this was a testing circuit , i got some more idea for it, but it really works well , i have tried other electro caps value they can be almost any thing .

@all

I made this also , to test the coil in a delta and star configuration , i made 6 coils going all the way around .

[jeanna]

I made this also , to test the coil in a delta and star configuration , i made 6 coils going all the way around .

Wow, Mark,
You may ignore my pm. you answered my question about the cap size, so I will try what I have.
I need to clear a board or 2!
This is very exciting.

(I am learning so much in this thread. I would have struggled so much a year ago. )

Did you measure the amps draw from the battery with one then 2 or 3 added like this?

Thank you,

jeanna

[jeanna]

Hi everyone,

I am still finding strange and wonderful things with my 2 tier setup.

I was getting ready to remove all the pieces from the 2 breadboards and tried putting a small 100pF cap into the battery rail of the upper tier.

Then it began again.

Today,
After putting a small (100pF) ceramic cap into the second tier battery rail and I got 4 distinct ways to turn on lights. They need each other in some way. I can light all of them as single circuits, and I can light all 4 at the same time and sometimes if I remove one wire 2 other lights go out.

There is one place where both polarities are working at the same time, and another where the polarity is so strong, that if I turn just 1 light around ALL the lights in all the places go out.

They are inter related. And the whole path of the wires involved is reminiscent of a figure-8 or a flower. Maybe 2 figure 8's with one petal removed.

In the end I added another 100pF cap into the battery rail going into the lower tier too. Not much changed, but it is still there.

The only weak lights are the ones off the second tier secondary. But those are able to go equally in either direction!
EDIT:
These actually are not weak at all. I forgot there were 3 in series in each direction!

It is using or drawing 30mA from the battery and altogether, there are 11 lights;

Well if I strip it down to its most basic arrangement of lights, it uses 34mA and 5 separate leds which follow 4 different paths and one which follows the same path but with opposite polarity. A truly ac line.

I think this is a lot like the more compact design that Mark is drawing. I am not sure enough to take it apart.

So, I better get some more little breadboards, and I really should solder up a real jtc with secondary and a switch and in a case as I had planned early this morning.

jeanna

[Mk1]

@all
I know its not the place , but i feel there is no place like here.

I look at my current project , it will be slow since i don't have the part , now how to call it credits goes to bedini and his fan (some for Imothep) also Ed !!!

In clear yellow the magnet disk, in red the bedini propeler less fan motor charger, Ed's Pmh for generator coil .