Re: Mini coil earth?

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

Original poster: "kayaker" <kayaker-at-sbcglobal-dot-net> 

Hello All:

A newbie question. What is a counterpoise on the secondary.

Doug
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, October 03, 2003 11:10 AM
Subject: RE: Mini coil earth?


 > Original poster: Jim Lux <jimlux-at-earthlink-dot-net>
 >
 > At 08:32 AM 10/3/2003 -0600, you wrote:
 > >Original poster: Thomas <tom-at-pwrcom-dot-com.au>
 > >Thanks Jim, I'll do that.
 > >
 > >It's a pity ESD bench mat material (anti-static mat) would be no good for
 > >this, as I have tons of it.
 >
 > Aluminum foil stuck to a piece of carpeting or canvas would work well.  As
 > would chicken wire.  Don't bother fooling with copper.. more trouble than
 > it's worth.
 >
 >
 >
 > >I do have some 100mm wide copper tape (~1mm thick) that I could solder
 > >together with some copper braid (so that it folds up quite small).
 > >
 > >
 > > > Original poster: "Jim Lux" <jimlux-at-earthlink-dot-net>
 > > >
 > > > Make a chicken wire or hardware cloth counterpoise.  The
 > > > radius should be
 > > > about the height of the topload above the counterpoise. Square, round,
 > > > hexagonal, matters not... Ground the RF ground (i.e. the bottom of the
 > > > secondary) to the counterpoise.  Hook the counterpoise to the
 > > > green wire
 > > > (safety) ground too, but that's not what you're depending on.
 > > >
 > > >
 > > >
 > > > almost all the RF current will be carried in the counterpoise.
 > > >
 > > >
 >
 >