my first coil - once revised
From: Damon Burke[SMTP:damon-at-portal.stwing.upenn.edu]
Sent: Thursday, August 07, 1997 5:14 PM
Subject: my first coil - once revised
I'm back writing to you about building my first coil. I wrote a message a
little while back about my tesla coil and it's lack of performance. I
removed my toroid on top and added a tennis ball wrapped in aluminum foil.
I was able to tune my coil out to it's farthest diameter and make 5-6"
sparks in all directions from the ball. I'm quite aware that this is a
horribly ineffecient coil for 15K60ma, but i'm working on that. I have
three glass plates as my cap, and tonight I cracked two of the pieces of
glass. It was rather impressive.. the first one cracked after I shut off
my coil.. and it sliced through the glass - steering it's way around the
wire connections. The cut was so strange that the glass is cut like a
puzzle piece, and is still together (rather impressive sight.) I have
called a company in california about sending me a catalog so I can order
new caps, but I haven't heard from them.. I may have to call again. My
safety gap is set at less than half an inch, and it never arcs.. I assume
I should decrease it's width. When I rebuild (or buy) a new cap and
redesign my horrible sparkgap, i'll come back asking for help.. Thanks
for all the help so far!