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RE: [TCML] Magnetic Quenching
Could your machine be the magnet of an old NMR machine? The old 60HMz
were indeed water-cooled. Now it is all superconductive magnets
-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
Behalf Of Jeff Behary
Sent: 11 September 2008 21:49
To: Tesla Coil Mailing List
Subject: RE: [TCML] Magnetic Quenching
Good question!
I think this area is also perfect for further research. If you think
about the Poulsen & Duddell Singing Arcs & transmitters, they were in
many ways Tesla circuits, or at least similar variations. Granted,
different application, but some of these transmitters were pushing over
250kW, with low voltage high current arcs no less! They were also using
large (but crude by today's standards) electromagnets...much like those
in the Tesla lectures. I think this concept could really prove fruitful
for TCs, which would seem simple in comparisson... I know of some
experimenters in Croatia that had some success with this, using even
simple tungsten gaps with NIB magnets.
I think it is too heavy to ship to anyone to play with, but I have a 2
foot tall water-cooled electromagnet with room for a 7" round core (that
unfortunately is missing from it!). It would be a great monster to
incorporate into this technology somehow. I got it to try and figure
out the singing arcs one day in the far future. But time and cost, the
core is a vital part obviously, and getting even a chunk of steel that
size is an ordeal - much less proper laminations to make a "real" core.
It was made by Varian, and has 6 or 7 coils potted in (?)Epoxy, probably
ran from 480V, and even without the core weighs a few hundred pounds.
If anyone has any ideas of what to do with it (or what it might actually
be from), I often thought of just filling it with scrap steel and
machining some field portions for the top and bottom. I wish I could
"slice" the individual coils out of it to have smaller (& lighter!)
versions to play with, but the housing around them is massive, and it
seems to well-built to hack into/apart. It is probably around 16" in
diameter. Maybe a start would be to find some 6" sch 40 [scrap] steel
pipe for the core...? Not sure even where to find that...? Might be a
hernia in the making...
Jeff
> However, there are few quantified, before-after tests, and the area is
> ripe for further research. The technique should be effective for both
> static and rotary gaps.
>
> Bert
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