Re: Secondary ground terminations

Subject:  Re: Secondary ground terminations
  Date:   Wed, 11 Jun 1997 19:25:32 -0400 (EDT)
  From:   Esondrmn-at-aol-dot-com
    To:   tesla-at-pupman-dot-com

In a message dated 97-06-11 05:27:45 EDT, you write:


 I was planning on plugging the base of my sec tube with a 3/8-
 1/2" disk of Plexiglass with a 1/4-20 threaded insert in the
 center, and gluing a second 3/8" disk above this insert to
 insulate and plug the insert hole.  The insert would be used to
 mount the secondary assy.
 Would it be reasonable to use this insert as a ground connection,
 running a thin copper strip radially outward on the base of the
 lower disk from the insert to the bottom tail of the secondary?
 Gary Lau
 Waltham, MA

That sounds similar to how I have both of my secondaries set up.  I use
1/2" thick piece of acrylic cut to just fit into the secondary and glue
to a larger piece of acrylic that I use to mount to the main base for
coil.  I glue this on to the bottom of the secondary and use nylon
screws or
nylon bolts to bolt the thing down.  I solder a lug on to the bottom of
secondary winding then use a brass bolt in one mounting position to go
through the grounding lug and terminate under the mounting platform to
main RF ground.

Ed Sonderman