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Overunity Machines Forum



Joule Thief

Started by Pirate88179, November 20, 2008, 03:07:58 AM

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electricme

#6810
June 04, 2009, 02:16:41 AM
@All
Here is another CRO movie, it's the 3rd one I have done today of my EB output, the waveforms have changed further again slightly.
This time I have altered the image somewhat to show the Triangle waveform which we have seen on Jeannas scope on Bills Stubblefield Earth Battery Forum.
I then return my scope settings back to their original settings.

jim
People who succeed with the impossible are mocked by those who say it cannot be done.

Pirate88179

#6811
June 04, 2009, 02:30:37 AM
Jim:

What did you change to make that waveform look more like Jeanna's?  Are you seeing the same general range of Hz she was seeing?  After a little more testing with my scope so I get to know it a little better, I will drag it outside and see what mine looks like.  I wonder if all of them will be a little different?  Or, will the frequency of all of ours be similar?  Very good work Jim, thank you.

Bill
See the Joule thief Circuit Diagrams, etc. topic here:
http://www.overunity.com/index.php?topic=6942.0;topicseen

altrez

#6812
June 04, 2009, 06:47:26 AM
Quote from: resonanceman on June 03, 2009, 09:45:46 PM

Altrez

I agree  with you  ........

I guess I like  dong it the hard way .

I want to  make  a  portable battery  charger ...... I want to be able to  attach the  charger to the back side of a  AA battery holder .
I want the charger to be no larger than the AA battery .

I  can't  think of  a load that would work with this particular  project.

gary

Try a resistor across a pickup coil. You could make it small. I tested the concept for you and it works :)

-Altrez

resonanceman

#6813
June 04, 2009, 07:55:25 AM
Quote from: altrez on June 04, 2009, 06:47:26 AM
Try a resistor across a pickup coil. You could make it small. I tested the concept for you and it works :)

-Altrez


Altrez

Great idea     :)


It appeares to be charging nicely


I happened to have  a pot and cap  connected together

I tried it on  a secondary for  a short time .....I was able to control the flashing  rate  of  the LED on my JT  to some degree .
This might  be  a secondary  frequency  control .

gary

altrez

#6814
June 04, 2009, 08:03:09 AM
Quote from: resonanceman on June 04, 2009, 07:55:25 AM

Altrez

Great idea     :)


It appeares to be charging nicely


I happened to have  a pot and cap  connected together

I tried it on  a secondary for  a short time .....I was able to control the flashing  rate  of  the LED on my JT  to some degree .
This might  be  a secondary  frequency  control .

gary

Yeah several pages back I posted that I had added a rheostat to control the pickup coil. It works well.  its how I tune my charger :)

Take Care,

-Altrez
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