Re: RF Ground Connections - Wire Type

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

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...

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.


> 
> Gary Lau
> MA, USA
> .
> 
>  -----Original Message-----
> From:   Tesla list [mailto:tesla-at-pupman-dot-com]
> Sent:   Tuesday, July 16, 2002 10:09 AM
> To:     tesla-at-pupman-dot-com
> Subject:        RF Ground Connections - Wire Type
> 
> Original poster: "Mccauley, Daniel H by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <daniel.h.mccauley-at-lmco-dot-com>
> 
>         Do you think steel braided cable (kind used in ground discharge
> sticks, winches, etc...) would be a good connection.  Theres a lot of
> surface area there, its cheap, but not sure on the material.
> 
>         Thanks
>         Dan
> 
> > Use a proper copper ground rod available at almost any electric supply
> > shop
> > or hardware store.
> >
> > Do not use a galvanized pipe.  Use copper.  You want the best possible
> > ground you can get.  Also for lead wire use 2 to 4 gauge fine stranded
> > welding cable.
> >
> > Dr. Resonance
> >
> >
> >
> >
> > ----- Original Message -----
> > From: "Tesla list" <tesla-at-pupman-dot-com>
> > To: <tesla-at-pupman-dot-com>
> > Sent: Sunday, July 14, 2002 8:06 PM
> > Subject: Simple RF Ground
> >
> >
> > > Original poster: "Daniel McCauley by way of Terry Fritz
> > <twftesla-at-qwest-dot-net>" <dhmccauley-at-spacecatlighting-dot-com>
> > >
> > > I currently live in a townhouse so I don't have a large (well actually i
> > > don't have any except for a small patio area with a small garden).
> > >
> > > What is the simplest type of RF ground construction i can live with my
> > coil
> > > (15kv, 60mA)
> > >
> > > Can i get away with just a pipe hammered into the soil and then running
> > the
> > > RF ground cable to my living room where i'll have a chicken wire carpet
> > > under my coil???
> > >
> > > Thanks
> > >
> > > Dan
> > >
> > >
> > >
> > >
> > >
> > >
> >
> >
> >