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Energy gained from collapsing magnetic fiels
#11
This is the best picture I have on hand. It shows the whole thing. The primaries are 6 spools about 110 turns each slid onto the core tube. Core tube is about 9" long, I think. The secondary is on a printed spool that fits tightly over the primary spools. That green terminal block was so I could try different primary arrangements. For the test in the first post they were all wired in series. The white terminals at the bottom are for loads.

   
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#12
To Nali2001,

I apologize. I measured the actual coil and it is 6" long, and the plastic tube with iron core is 7" long.
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#13
(10-01-2023, 12:49 PM)Cadman Wrote: To Nali2001,

I apologize. I measured the actual coil and it is 6" long, and the plastic tube with iron core is 7" long.

Ok thanks. I will test this. I will print the coil holders and I have iron powder also.
Will build a heavy duty mechanical pulse switch.
Already have the caps and wire at hand.
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#14
(10-02-2023, 05:06 AM)nali2001 Wrote: Ok thanks. I will test this. I will print the coil holders and I have iron powder also.
Will build a heavy duty mechanical pulse switch.
Already have the caps and wire at hand.

If you would like, I can post my .stl files for the spools here.
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#15
(09-29-2023, 05:37 PM)nali2001 Wrote:
(09-29-2023, 05:25 PM)Cadman Wrote: I don’t see a files section on this forum so I’ll try to attach a pdf file here.
A quick study shows I built my transformer all wrong, but it worked anyway.
It's a good article. I hope you find this useful.

Do you by chance also have an image of the iron powder transformer you describe?


Hi all,
made a mechanical switch and did multiple tests.

The attached below image is what a typical pulse looks like.
All the cap uf values have been measured.

Blue is the source cap at 4220uf
Yellow is the load cap at 689uf
Red is the secondary cap at 680uf

Never mind the Vavg reading in the scopeshot.
I used the cursor function get all the voltages and converted to joule it results to this:

Start = 1.3613 joule
After pulse = 1.0212 joule left
Used = 0.3401 joule

cap yellow = 0.15777 joule
cap red = 0.020054 joule
total = 0.177824 joule

Used =  0.3401 joule
Output = 0.177824 joule

I did a few of these test. All around 50% efficient.

Cadman, can you maybe elaborate more on your high efficiency results a bit more?


Attached Files Thumbnail(s)
       
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#16
Perhaps it's the winding method of Cadman's primary coil? Using 6 coils in series, you used a continuous coil...
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#17
(10-22-2023, 09:26 PM)RhineX Wrote: Perhaps it's the winding method of Cadman's primary coil? Using 6 coils in series, you used a continuous coil...

Hmm don't really think it matters. I hope Cadman can share his results/measurements and I am interested in the waveforms of his switch process/moment as well.
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#18
Nail 2001.could you show a circuit drawing in simple form I'm not an electronic skilled guy.
Thanks
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#19
(10-24-2023, 03:21 AM)Shylo Wrote: Nail 2001.could you show a circuit drawing in simple form I'm not an electronic skilled guy.
Thanks

essentially this image below


Attached Files Thumbnail(s)
   
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#20
(10-23-2023, 05:18 PM)nali2001 Wrote:
(10-22-2023, 09:26 PM)RhineX Wrote: Perhaps it's the winding method of Cadman's primary coil? Using 6 coils in series, you used a continuous coil...

Hmm don't really think it matters. I hope Cadman can share his results/measurements and I am interested in the waveforms of his switch process/moment as well.

First of all thanks for the effort to test this. This weekend I'll unbox it and try to get it running again just as it was. That way we won't be relying on my memory.
I think the board needs the mosfet replaced and maybe the signal generator too. If the old info is confirmed I'll change it to a manual switch and see what happens.

Either way we can investigate further if the results warrant it.
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