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Re: 3 phase coils



Original poster: "Mike" <mike.marcum@xxxxxxxxxxxx>

I made a 3-phase JL back when I had a 3-phase 400hz generator from a military auction. Simply took off some primary turns on 3 old neon bombarders I got lucky and found relatively cheap and rewound the secondaries with kapton tape for insulation due to the higher v/t ratio. The JL was 3 rods instead of the usual 2 with 3 arcs climbing simultaneously in a delta configuration. As for the TC, got the schematic, but never got around to actually building it due to cost (requires 3x components- 3 rotaries on a single shaft, 3 caps, 3 transformers, but they last much longer, since for 360 bps, each leg only needs to do 120 bps with each rotary turned 120 degrees relative to the next). Unless you're building a truely huge TC (50'+ sparks) where one leg of 200A won't be enough current, single phase does fine.

Mike
----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Monday, July 11, 2005 2:45 PM
Subject: Re: 3 phase coils


Original poster: Michael Brooks <screaminfleadesigns@xxxxxxxxx>

I know this thread died in May but I have been up to my ears in distractions...
I teach basic 3 phase at a Tech school and would like to look into a 3 AC coil or jacobs ladder.
I am especially enthralled with the way the magnitudes balance each other and am curious as to how this would pan out in a coil or ladder.


If I ever get it together and actiually finish some of these porojects I might actually learn something : /
'flea


Tesla list <tesla@xxxxxxxxxx> wrote:
Original poster: "J. Aaron Holmes"


All the three-phase coils I've heard of are DC. Three-phase power provides for less ripple when rectified than ordinary single-phase power does.

BUT...it certainly seems as though one ought to be
able to create a three-phase *AC* coil too. I'd
imagine it would be something like a bipolar coil, but
with three secondaries instead of two, all wanting to
send big bolts at each other. Would it really work
that way?

Surely somebody has at least tried a three-phase
Jacob's ladder before...? I'd love to see that, too.

73,
Aaron, N7OE


--- Tesla list wrote: > Original poster: Michael Brooks > > > I had another question, what about a 3 phase coil? > Is it reasonably attainable ? Possible? > Irretrievably stupid? > > Thanks, > > 'flea > > >