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

In addition to my earlier comments, I was thinking that the two rings on the
secondary constitute a filament winding for an x-tube. Only one side of the
secondary would be connected to the filament winding. Then the filament
winding can ride the high voltage.

Godfrey Loudner


 

> -----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.rpi.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/
> -------------------
> 
>