The Gabriel Device, possible COP=8

[casman1969]

Eagerly anticipating the arrival of my steel doughnut casings. Guess I should now ask if we have agreement on the secondary ferrite ring so that I can order that as well. I'm in the US.
MAV seems to have settled on the 417. Is that correct for size?

[Mavendex]

it should be the right size, I took apart my transformer and measured with wire on its the correct size for the shell. there is a 517 that is the same core just epoxied and not encased in plastic which would also fit that shell.

mave

[twinbeard]

The permeability of the ferrite is too low.  Plain and simple.  It will release the flux back into the primary/outer core.

The point is that it is not an exact duplicate of the original device, so you don't really know what are the changes that caused it to give different results. For example, Mav mentioned that an iron powder variation did not work. That's why the quickest way to validate is often to validate with exactly the same parameters as the original to get your own working reference from which you can experiment, rather than to use the parts you have available. Once the parameters are changed, and it doesn't work, you end up with the situation where you do not have a sure way to make it work other than to remake the device exactly. Double the work with half the confidence.

/Wayne

[casman1969]

I just E-Mailed Sales at Magnetec (Karl,  'kkraft@magnetec.de') asking where I can purchase a couple of the Naoperm m-417 toroids. Does anyone here already have that contact established? Went through most of the previous posts but can't find that reference. Guess I should have asked my wife to find it as she has the ability to look in the same places I do and find stuff I was looking for...

[wayne49s]

I just E-Mailed Sales at Magnetec (Karl,  'kkraft@magnetec.de') asking where I can purchase a couple of the Naoperm m-417 toroids. Does anyone here already have that contact established? Went through most of the previous posts but can't find that reference. Guess I should have asked my wife to find it as she has the ability to look in the same places I do and find stuff I was looking for...

The following is their US distributor, the shipping may be cheaper:

@ All,

MAGNETEC Sales in USA

MH&W International Corp.
14 Leighton Place
Mahwah, NJ 07430 USA

Fon: +1(201) 891 8800
Fax: +1(201) 891 0625
magnetec@mhw-intl.com
http://www.mhw-intl.com