Re: schematics.........

To: tesla-at-pupman-dot-com
Subject: Re: schematics.........
From: "Christopher Boden" <chrisboden-at-hotmail-dot-com> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
Date: Mon, 21 Feb 2000 12:52:14 -0700
Approved: twftesla-at-uswest-dot-net
Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme


Coments interspersed

>Original Poster: "Alex Crow" <user-at-alexcrow.clara-dot-net>
>
>Chris
>
>Hold on! The main danger to NSTs (from Terry's simulations and experiments) 
>is
>operating frequency, HF and VHF kickbacks from the 'bang' into the primary
>circuit, which are a given for the way we work.... There is no way to 
>eliminate
>*all* the parasitics of your coil system, since essentially you are hitting 
>a
>resonant circuit hard with a huge pulse, and expecting it to produce just 
>one
>frequency at the terminal. As Terry's experiments have shown, you can 
>expect
>multi-hundreds of amps at tens of megahertz to be produced in that tank
>circuit. Your NST will choke this, but within the first layer of so of the
>winding, resulting in a rather excessive voltage difference between that 
>layer
>and the rest. Guestimating ---> dead NST!

Alright........idea.

I have seen that Chokes don't work too well. Why not? If the last few turns 
of the sec absorb the most impact, why doesn't a choke work? as it would 
seem these are just a few turns of wire as well. hmmmmmm




>Start with a good RC filter - it won't take you five minutes (like I did) 
>to
>rig up four 1.5k resistors, two in series on each NST leg, with bottle caps
>between the middle of each series pair and RF ground. Try to get resistors
>rated about 100+ Watts. You'll be laughing, not crying!!!
>
>Alex Crow

Where can I get the resistors?
Can I use something other than a (beer)bottle cap? What value?


Chris "Just finish the project, we'll buy you a new family!" Boden
The Geek Group
www.geekgroup-dot-org
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