Joule Thief

[Pirate88179]

@all

I am still running on the same two battery's from last night! I have one charging while the other one is powering the JT when the lights go out I switch places with the battery. It seems to be working better then expected.

I set up another test rig when I had an idea. Why not use the jt to charge two battery's at the same time. So I tried it and it works! I also tried using one of the charged battery's from the JT to run a CFL from a fuji mod and it worked! So here is what I have done with my setup.

1. Charged a 1.2V battery and it used it to power the JT while I charged the first source battery. This has been running for 24 hours with swapping.

2. Used a charged battery from a JT to run a fuji circuit and power a modified CFL.

3. Ran 10 LEDS the whole time I was testing.

Now what I have noticed is that if the LEDS go out. I can adjust the 10k POT and they will come back on. And my rectified DC voltage will jump back up.

I have also added a second Toroid to my main circuit wrapped around one of the pickup coils leads. That one has its own pickup coil that I am using to power its own 4 volt LED.

So what do you guys think?

-Altrez

Altrez:

Good going there!  I have no idea why what you are doing appears to work but, I am impressed with your results.  Please keep us posted on how this works over time as I think this could very well be an important discovery you have made.


@ All:

I just had the nicest phone conversation with Jim (Electicme) from Australia.  He, like Jeanna, said it was about time for me to start using my scope.  I told him what was holding me back was that I was afraid of frying something by having something set wrong.  He said, and I quote, "No worries mate", and had me fire up the scope using one of my joule thief circuit where I used the 2n3904, 1k resistor and a ferrite bead.

Well, it was not long before I had a very nice wave form on the screen with Jim's help.  He had me throwing stitches and moving the settings and.....nothing blew up.  I hope to post a screen shot of this later when I get time.

So, a big thank you to Jim for getting me over my fear of doing something wrong with the scope and damaging it.  I had already set the capacitance of the probes, and also calibrated everything according to the manual.  That was as far as I got, until today.  Now, it is just a question of using it, and playing with it and learning it.

Thank you Jim!!!!!!

Bill

[resonanceman]

[quote author=altrez link=topic=6123.msg182766#msg182766

Now what I have noticed is that if the LEDS go out. I can adjust the 10k POT and they will come back on. And my rectified DC voltage will jump back up.

[/quote]



-Altrez

That is  what my JTs are  doing too.

I am pretty sure that it  is  drifting out of resonance .
WIth mine  the  output  voltage is really low  .....5 to 10 V untill it hits  resonace .......then  it  jumps  150  volts or more.
WHen  the  volts go up  the   battery  draw goes down .

I can keep  mine charging   as long as I tweek   it every  few hours .

gary   

[altrez]

@Bill

Thank you:)  gadget figured it as well with his E-LIGHT. I am sure you will have fun with your scope! jeanna helped me with mine. We have the same type and let me say once again THANK YOU JEANNA!

I am not sure but I think I have figured out something. You can spike the frequencies of the JT circuit and keep getting different results. I am not sure why. Its easy to reproduce my results all you need to do is put a 10 k pot on the base take a pickup coil and rectify the DC and put a Multimeter on it and add some leds to a different pickup coil.

Watch the voltage on the multimeter when it gets low adjust the pot and watch the LEDS get bright and the DC voltage rise.

I am now on my 6 cycle each time I can bring the battery up to over 1 volt at that point I swap. A very interesting thing I just discovered is that I can run a small DC motor from a pickup coil that on the second toroid with a diode bridge. This si the first time I have been able to run anything other then LEDS / NEONS and I am very excited.

I really need to thank jeanna one more time. She asked me last night to do a simple test and it led me down this new path. I have tested this 10 different ways. I have a scope multimeter's control groups setup with different JTs and well I am fairly certain that this will keep working all week.

Now I used this method to charge a 330v 120uF cap with the fuji circuit and it worked great. I let the source battery drain to .285 with a draw and during the swap it read .880 out of the circuit.

I let it charge to 1.070 and swapped the source battery had drained to .330. I swapped them and got it back up to 1.082.

I will run tests all week and post my results.

-Altrez

[altrez]

@gary

That's awesome! I am seeing the exact same thing. with my setup. I am so glad someone else is as well Do you know what frequency your JT is at when its resonating?

-Altrez

[Pirate88179]

@ All:

Here is a scope shot of my JT ferrite bead circuit.  Again, this is the 2n3904 with the 1k resistor on a ferrite bead.

Thanks again to Jim, who held my hand and led me to get these first scope shots.  (First of my life!!!)

Bill