RE: Large Transformers and Capacitors

["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 Andy

They look like neon tube bombarders, but I think that they are x-ray
transformers which were once submerged under oil. The oil wound prevent the
arcing between the conductive rings. Are the windings oily? The secondary
appears to be directly over the primary. The small winding on the other leg
could be for DC current to saturate the core for controlling the current
from the secondary. Did you use a choke to control the arcing current?

The big caps could be for filtering the ripple from a powerful x-ray power
supply. 

These discoveries are just BEAUTIFUL, BEAUTIFUL, and more BEAUTIFUL!   

> -----Original Message-----
> From:	Tesla list [SMTP:tesla-at-pupman-dot-com]    Sent:	Saturday, January
> 26, 2002 1:55 PM
> To:	tesla-at-pupman-dot-com
> Subject:	Large Transformers and Capacitors
> 
> Original poster: "Andy Cleary by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <cleara-at-twcny.rr-dot-com>
> 
> Hello all - I recently came across two rather large transformers, with
> some characteristics unlike any other transformer I've seen.  I was
> hoping I could get some opinions from those on the list. Here goes:
> 
> The transformers (which can be seen at
> http://www.rpi.edu/~cleara/hv/2transformers.htm) are somewhat odd
> looking:  They are exposed core, dry type.  First off, anybody know
> what they could possibly be from?  Secondly, What is the reason for
> them to be constructed as they are? I'm guessing just a big air-gap to
> prevent arcing?  Also notice the large plastic insulation between the
> secondary and the core!  And my BIG question:  The High Voltage output
> wire is secured to the coil windings by a wire stemming off either
> side of the main output wire.  Those wires are then each secured into
> the ends of some _conductive_ tubing wrapped around the coils. (notice
> in the pictures the two black rings around the secondary coils, as
> well  as the two black rings around the base of the coils.)  The
> tubing is actually labeled "conductive", so whoever put it there must
> have had an idea behind it (it is actually about ~50k per inch).  If I
> draw an arc from the HV end to the LV end, the tubing pieces start
> arcing together.  Could those rings just be there to prevent the
> arcing that I am trying to force? Any information would be great!
> 
> Also, I came across some very large and interesting HV caps.  They are
> rated at 120KVDC, and .15uF.  For anyone interested, I've got some
> pics at http://www.r 
> 
> 
> 
>  pi.edu/~cleara/hv/large.htm (watch out, the
> pictures are slow to download!).  Again - any idea as to what they're
> used for?  Thanks,
> 
> -Andy C.
> 
> --------------------
> Andy Cleary - KC2GVE
> AJAX Electronics
> cleara-at-rpi.edu
> Geek# 1010
> www.rpi.edu/~cleara/
> -------------------
> 
>