Re: 50kV xfmr

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

Original poster: "Hydrogen18" <hydrogen18-at-bellsouth-dot-net> 

I recommend you rip the thing up until you get to the 25000 volt output(or
whatever HV AC it has out). Its just so hard to trouble shoot something if
it isnt exposed. The doubler could die at any time. I dont know how much of
a jacobs ladder would be at 5 ma. Why not just use a 15/30 NST?

---Eric
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, July 06, 2004 8:27 PM
Subject: 50kV xfmr


 > Original poster: Ben McMillen <spoonman534-at-yahoo-dot-com>
 >
 > Hi all,
 >     I had the wonderful experience of being given a 50kV transformer new
in
 > the box by a guy up in the engineering building on campus. It was given to
 > him by a prof who used to work in a failure testing lab before he taught
 > and has since retired. What I'd like to do is make a large jacobs ladder
so
 > that the freshman have some eye candy when they come to visit. The specs
 > are as follows:
 >
 > The unit is made by Plastic Capacitors, Inc. and is encased in a metal box
 > (almost thought it was a large HV cap when I found it) about 6" X  8", and
 > about 12" tall. There are two 6" long ceramic insulators on the top, which
 > end with aluminum golf ball sized corona balls. The inputs are also on the
 > top, slightly to one of the longer edges.
 >
 > The part number is HV500-502M, and the spec sheet in the box says it'll
put
 > out 50Kv with the aid of a built in full wave doubler (so it's 50Kv
 > DC)..Max output is 5mA. It's got a 500K internal bleeder, and approximate
 > output resistance is 1.2Meg ohms..
 >
 > I'm guessing that this will have to be current limited to start, however I
 > remember hearing that HV trannys with a doubler in them don't like to be
 > shorted as it destroys the bridge. Will that be a problem here??
 >
 > Thanks for any help!!
 >
 > Coiling In Pittsburgh
 > Ben McMillen
 >
 >