RE: Re-configuring X-Ray Transformers

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

Original poster: "Loudner, Godfrey by way of Terry Fritz <twftesla-at-qwest-dot-net>" <gloudner-at-SINTE.EDU>

Hi Jack

You wrote that the transformer was rated at 125,000 volts at 300 mA. This
means that the transformer, loaded with the proper x-ray tube,  could supply
300 mA at 125,000 volts. That's short term duty at 37,500 watts. The primary
is not designed for continuous duty at 37,000 watts because not enough heat
sinking is provided. But the primary should be adequate for continuous duty
at 5000 watts to 10,000 watts. If you want to supply a load at 20,000 volts
/ 1 amp. for bombarder duty, I just don't know if the primary could handle
this for one minute. Anyway reworking your x-ray transformers in the style
you want is a major project. Maybe if you rework both transformers, you
could place them in parallel. It would probably be very difficult to get the
voltages to match, unless the transformers are identical.

Godfrey Loudner  

> -----Original Message-----
> From:	Tesla list [SMTP:tesla-at-pupman-dot-com]
> Sent:	Monday, January 28, 2002 11:24 PM
> To:	tesla-at-pupman-dot-com
> Subject:	Re: Re-configuring X-Ray Transformers
> 
> Original poster: "James T by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <jamest2000-at-att-dot-net>
> 
> Hi Jack,
> 
> >  This connection is not
> > > insulated for full floating
> > > secondaries - even in
> > > oil-.
> >
> > Hmmm Is it (was it) flashing over to the core? or
> > where?
> 
> The flashing over was at "a secure, undisclosed location" somewhere near
> the midpoint wire. That
> was part of the problem.
> 
> >  but I fear the wire awg size may be a hair
> > too small (pun intended) to sustain even the short
> > term current I need (sometimes around 800 ma - 1 amp.
> 
> Well, for that much current out, you need big current in. So the primary
> could be just as much a
> problem. For 15KV -at- .500 AMPS , using 220 VAC in you need 34 AMPS primary
> current.
> 
> >
> > Maybe I'll just end up making a cool spark gap in the
> > shop turned lab.
> 
> Would be impressive!
> 
> >
> > >   BTW mine was coated with shellac, so I soaked it
> > > for a week in denatured
> > > alcohol. that loosened
> > > it up enough to peel the layers off in a controlled
> > > way.
> >
> > Was your's shellaced, then submerged in oil?
> 
> Yeah, it was really old craft paper construction. They only shellaced the
> outside, no vacume
> impreg., so I set up a winder backwards(unwinder) and recovered literally
> a
> mile of 28 AWG wire. I
> have wound a couple of TC secondarys with it.
>  Still it could be usefull for lower power TC's. Depending on the wire
> size.
> Regards,
>  James Cart
> 
> 
> 
> 
>