Re: high voltage technique for external access to x-ray transformer?

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

Original poster: "Jack Vandam" <snotoir7674g-at-mindspring-dot-com> 

Thanks for the info.  I visited your site recently when I came across it in
a search engine before you pointed it out to me now.  The transformer is
already drained and the tube was removed long ago.  I like the idea of
repotting in plastic housing like you have done.  Unfortunately, the 12"
inside diameter pvc size holds me back in that area (expensive and rare
here) so I hope to be able to use a heavy plastic bucket in a 12x12" size,
which should do nicely.  The key would be finding the right type of plastic
so the bucket wouldn't decay in a year.

Jack

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Monday, September 27, 2004 6:38 PM
Subject: Re: high voltage technique for external access to x-ray
transformer?


 > Original poster: "Peter Terren" <pterren1-at-iinet-dot-net.au>
 >
 > Good question.  For the internals of a 125kv x-ray head see
 > http://tesladownunder.iinet-dot-net.au/Nuclear,%20X-ray.htm
 > You have to get at the tube to remove it and connect to the HV with very
 > heavily insulated wires such as lots of flexible pvc tubing in incremental
 > sizes over each other.  It would probably be easier to repot the dental
 > transformer in a separate container under oil like I have for mine.
 > http://tesladownunder.iinet-dot-net.au/Other_HV_stuff.htm#100kV
 >
 > Peter
 >
 >
 >
 > ----- Original Message ----- From: "Tesla list" <tesla-at-pupman-dot-com>
 > To: <tesla-at-pupman-dot-com>
 > Sent: Tuesday, September 28, 2004 1:14 AM
 > Subject: high voltage technique for external access to x-ray transformer?
 >
 >
 > >Original poster: "Jack Vandam" <snotoir7674g-at-mindspring-dot-com>
 > >Hi folks:
 > >
 > >Thanks for the great responses to my previous inquiries.  It's wonderful
to
 > >see the vast amount of high voltage experience here.  Another question if
I
 > >may, this time concerning how to properly fabricate a high voltage
terminal.
 > >I have a small dental x-ray transformer of the Picker/ SS White type (90
Kv
 > >-at- 7 mA max).  It is already within its chassis (original metal x-ray
 > >tubehead) and would need filled with oil for proper operation.  Since I'd
 > >like to make the hv accessible from outside the case, what would be the
 > >cheapest and most insulating way to provide external high voltage
terminals?
 > >On the big Westinghouse unit I spoke of recently, I noticed that its
sockets
 > >were recessed and composed of bakelite or similar.  How they are attached
to
 > >the metal is unknown though as I would imagine some sort of seal to keep
out
 > >ouside elements.  Anyway, any thoughts here would be appreciated.  I know
 > >you guys have had to deal with these issues in your hv work and may be
able
 > >to give me some ideas.
 > >
 > >Thanks,
 > >Jack
 > >
 > >
 > >
 >
 >
 >
 >