Re: Silly question?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jimlux-at-earthlink-dot-net>

Several folks have done just this.  I believe it was Finn Hammer who made
his own mini-pig.  I've also heard about people rewinding Microwave oven
transformers. Checking back through the archives, you'd find a fair amount
of information about the necessary core cross section, wire size, etc.
Rigging up a simple vacuum encapsulation setup to pot the secondary winding
for corona and breakdown prevention would be fairly straight forward, or,
you could just sink it in oil.  

Tesla list wrote:
> 
> Original poster: "Matthew Smith by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <matt-at-kbc-dot-net.au>
> 
> Hi All
> 
> Maybe I've been away from electrical engineering for too long and
> writing software as made me soft in the head - but:
> 
> If sourcing suitable 110/240V --> xkV transformers is such a bind, why
> not wind our own?  If it's a question of it being too (mechanically)
> difficult, maybe I (and others) should try to devise a tranny winding
> gadget - possibly one that's flexible enough to do Tesla secondaries as
> well...
> 
> In my previous engineering incarnation, we were forever getting motor
> stators rewound and they must be a NIGHTMARE to do compared with a
> tranny!
> 
> Transformers with alternated laminations (ie the ones that won't pull
> apart) are obviously out of the question...
> 
> If anybody's seen the little widgets on sewing machines that fill the
> underside bobbin, maybe something based on that principle?
> 
> Cheers
> 
> M
> 
> --
> Matthew Smith
> Kadina, S. Australia