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Re: primary coil



Original poster: "Jason Petrou by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jasonp-at-btinternet-dot-com>

Elli,
The outer braiding of the coax cable can cause losses/stray
capacitance/parasitics to be set up within the primary circuit. If you still
want to use it, I would either remove the outer braid, or ground one end of
the braid to RF ground. A good material for primaries is soft copper
refridgeration pipe. Good luck!!!

Regards,
Jason

Geek #1139 Rank G-1
www.thegeekgroup-dot-org
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, July 17, 2001 4:58 PM
Subject: Re: primary coil


> Original poster: "Eleanor Flood by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <eflood-at-bellsouth-dot-net>
>
> Hi all,
> How critical is the number for coax to use for a primary?   If so, is
> there a way to determine if it will work by visual inspection.  I have
> lots of coax around here,
> one good length has radio type plugs attached, so think it is Rf rated,
> not the TV hookup type.  Have other coax, but find no identifying
> numbers on any of it.
>
> Also, how about copper tubing?  Have a helix coil, 3/8", 5+ turns, ~
> 3/8" between turns, coil is about 6" in diameter, my secondary is 3-1/2"
> ......
>
> Any info and/or suggestions greatly appreciated.
>
> Safe coiling,   Elli
>
>
>
>