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Re: Coax Cap?? (fwd)
---------- Forwarded message ----------
Date: Fri, 13 Feb 1998 18:49:04 -0800
From: - <randy-at-gte-dot-net>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: Coax Cap?? (fwd)
Tesla List wrote:
>
> ---------- Forwarded message ----------
> Date: Fri, 13 Feb 1998 21:39:15 +0000
> From: "Gregory R. Hunter" <ghunter-at-mail.enterprise-dot-net>
> To: Tesla List <tesla-at-pupman-dot-com>
> Subject: Re: Coax Cap??
>
> Chris,
>
> I've used coax to make small capacitors before for ham radio antenna
> experiments. I think RG-8 is good for 29pF per foot at roughly 5kV.
> Wouldn't be much use in Tesla coil work. If you try to use a long
> piece of RG-8 to make a big cap, it will tend to behave like a PFN.
>
> Greg
>
> East Anglia, UK
>
> > To: "'Tesla List'" <tesla-at-pupman-dot-com>
> > Subject: Coax Cap??
> > Date: Thu, 12 Feb 1998 00:02:19 -0600
> > From: Tesla List <tesla-at-pupman-dot-com>
>
> >
> > ----------
> > From: Zuma [SMTP:mwise-at-ns.sosis-dot-com]
> > Sent: Wednesday, February 11, 1998 11:41 PM
> > To: tesla-at-pupman-dot-com
> > Subject: Coax Cap??
> >
> > Has anyone ever made a coax capacitor, such as stripping the outerlayer
> > leaving just the polyethylene core and the wire intact? If so did it
> > work, and did it take alot of wire to make one?
> >
> > Chris
> >
> >
> >
> >
I have wondered about the shielded underground HV cables that the
utilities use.....
I know the linemen are very careful about possible charges on the
line due to capacitance, but I have no clue about the pf/ft values.
Somebody (Malcolm, I believe) had an interesting post a while back
about a cap made of multi-pair telco wire.
Randy Venable