Re: strength of vacuum

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

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

It's powered by a 3 kva PT. I have a smaller coil (run off a 7.5kv/30mA nst)
that's encased in oil with the primary (4" wide aluminum flashing/6 mil PE)
inside the secondary to get .385 coupling (brighter sparks, would
self-destruct without the oil). I'm trying to make the PT version like the
smaller one (secondary coil of smaller one is 6x24" acrylic tube in an 8x25"
acrylic tube). The big one will be 10x30/12x31. Best coupling I can get is
.22 without oil. I figured with .385 I can get brighter sparks (11 feet at 6
kva), but not necessarily longer like my small one (30" sparks).

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Sunday, November 02, 2003 12:05 AM
Subject: Re: strength of vacuum


 > Original poster: "Gerry Reynolds" <gerryreynolds-at-earthlink-dot-net>
 >
 > What kind of stress levels (volts-per-turn) are we talking about requiring
 > the secondary to be encased in oil?  Also what is the power level and coil
 > height?
 >
 > Just curious
 > Gerry R
 >
 >  > Original poster: "Jim Lux" <jimlux-at-earthlink-dot-net>
 >  >
 >  > Depending on the size, you don't need anything near 1/2".  If you're
using
 >  > oil for insulation, you don't need inches and inches of it surrounding
the
 >  > coil, do you?  The primary breakdown path will be through the air on
the
 >  > outside of the tank.  A half inch or inch of oil around the windings
 > should
 >  > be sufficient, and won't weigh much.
 >  >
 >
 >
 >