=?iso-8859-1?Q?Re:_Ed=B4s_Amps_(was_cap_failure...)?=

To: tesla-at-pupman-dot-com
Subject: =?iso-8859-1?Q?Re:_Ed=B4s_Amps_(was_cap_failure...)?=
From: Ed Phillips <evp-at-pacbell-dot-net> (by way of Terry Fritz <twf-at-verinet-dot-com>)
Date: Sat, 13 Feb 1999 23:17:43 -0700
Approved: twf-at-verinet-dot-com

"Now that last sentence was quite a surprise to me.
I am presently using a tuning coil made of 1/4" hard steel tubing
(higher losses than copper, I know). This makes adjustments
easy when changing cap sizes, however, (and also decreases
the coupling slightly).
My real primary coil is made from 3/8" copper tubing. While
the 3/8" doesn´t get warm at all, my tuning coil (which is only a
fraction of the µHs of my primary coil) gets pretty warm during
a run. After a 5 minute run it is very slightly uncomfortable to
the touch (guessing 40-45°C).  I  am running a static gap, so I
couldn´t tell you my BPS. I am guessing it is over 100 BPS (50Hz),
but I wouldn´t bet on it.

Coiler greets from germany,
Reinhard"

	My primary does get warm, but not uncomfortable to touch (my definition
of hot).  The HV ceramic filter capacitors I am using get so hot that I
can't run them more than a couple of minutes at a time without losing
some.

Ed