Re: Thorated vs Pure Tungsten

To: tesla-at-pupman-dot-com
Subject: Re: Thorated vs Pure Tungsten
From: Steve Roys <sroys-at-umaryland.edu> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
Date: Wed, 16 Jun 1999 18:11:46 -0600
Approved: twftesla-at-uswest-dot-net
Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme



Tesla List wrote:

> Original Poster: wysock-at-ttr-dot-com
>
> To Terry (specifically) and All,
>
> Please reconsider your design for a "safety gap."  I worte to you
> before, about using either brass or copper sphere electrodes,
> for this purpose.  They can either be solid machined pieces, or
> hollow-spun units.  The solid pieces are needed where you are
> operating at a.c. input levels above about 5 Kva.  The "ball gap"
> offers a very well defined E-field stress line model, between the
> two electrodes, assuming that they are polished and very smooth
> and of a constant radius of curvature.

Keep your eyes open at yard sales and flea markets for old brass doorknobs
- they're
already nicely  curved, have a decent radius of curvature, look spiffy, and
work just
great as safety gaps.  In addition, they're already threaded so it's easy
to mount
them and attach your wires to them.

Steve.