Re: RF Ground Connections - Wire Type

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

Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-qwest-dot-net>" <evp-at-pacbell-dot-net>

Tesla list wrote:
> 
> Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<jimlux-at-earthlink-dot-net>
> 
> Tesla list wrote:
> >
> > Origin
> >
> > Now to the practical aspects.  An RF ground, good or bad, will have
> > virtually no effect on the coil's performance.  Several list members have
> > accidentally forgotten to connect their secondary base to a ground of any
> > sort, and there was NO impact on performance!  The real reason for using a
> > ground has more to do with preventing RF interference and HV RF nasties
> > from entering your house wiring.
> 
> RF grounds (in the form of a counterpoise) have a huge effect on the
> performance of my small TC...

	Even when it's tuned for each configuration?

> whether it is connected to "green wire" ground, or to "real ground" has
> almost no effect.
> 
> For a run of the mill coil with a flat primary, and where the bottom of the
> secondary is connected somewhere in the primary circuit, the flat primary
> is acting as the RF counterpoise, and whether it is connected to "real
> ground" is probably not as significant.

	Also, there's enough capacitance in the input transformer to form a
path back through the line to ground [somewhere].  Doesn't keep RF off
the line, of course.

> >
> > Gary Lau
> > MA, USA

Ed