Re: Source for Aluminum Spheres (up to 12" threaded)

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

Original poster: "RIAA/MPAA's Worst Nightmare" <mike.marcum-at-zoomtown-dot-com> 

is shading really needed if the secondary is potted transformer oil with the
sphere sticking out?

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, October 28, 2003 2:38 PM
Subject: Re: Source for Aluminum Spheres (up to 12" threaded)


 > Original poster: Esondrmn-at-aol-dot-com
 >
 > In a message dated 10/25/03 7:11:07 PM Pacific Standard Time,
 > tesla-at-pupman-dot-com writes:
 >
 >
 > > > In what way better?  Clearly they work just fine but wonder what their
 > > > edge is over a sphere with the same breakdown voltage.
 > > >
 > > > Ed
 > >
 > >
 > >One way I can think of is that a toroid gives you mostly independent
control
 > >over the breakout voltage and topload capacitance.  The major diameter
 > >mostly controls the topload capacitance.  The minor diameter mostly
controls
 > >the breakout voltage.  With a sphere, you don't have this level of
control.
 > >
 > >Gerry R
 > >Ft Collins, CO
 >
 >
 > Also, the toroid will provide "shading" for the top few windings of the
 > coil so we don't get sparks breaking out from there.  I have tried spheres
 > on my three inch secondary and still had to have a small toroid on top
then
 > the sphere raised up from there.
 >
 > Ed Sonderman
 >
 >