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Re: multi segment single laye
Tesla List wrote:
>
> >From richard.craven-at-mkbbs.co.ukTue Nov 19 21:43:22 1996
> Date: Mon, 18 Nov 96 23:10 +0000
> From: richard.craven-at-mkbbs.co.uk
> To: TESLA-at-pupman-dot-com
> Subject: multi segment single laye
>
> Hello all
>
> I recently holidayed in Boston and I was fortunate enough to chat to
> Robert Stephens in Toronto, whilst he was in the middle of his move to
> Shelburne.
>
> A couple of comments came up: he mentioned how his original stainless
> steel RSG burnt away in the space of a few minutes when he was switching
> caps charged from a 7kVA source. He went to tungsten and found that the
> wear rate diminished to practically zero.
>
> I can't afford to do the same to my RSG which is, by the sounds of
> things, almost identical to Roberts' , but I can get some tungsten
> carbide elements to face the s-s rotors and stators with.
>
> Does anyone have some specs for bulk resistivity that they can quote for
> tungsten carbide? I know there are dozens of grades, coatings etc. but
> an approximate figure will do.
>
> Secondly, we spoke about something that has been puzzling me. I draw
> your attention to the front cover of the catalogue published by
> Information Unlimited, Amherst, New Hampshire USA. It is run by Robert
> Iannini and supplies lots of kits including at least three TCs (TC3,4
> and 5) as well as various appropriate components.
>
> The front cover shows what appears to be a good performer in the shape
> of a 2 coil TC: the primary looks to be quite small in diameter, and
> maybe Cu ribbon or strip etc. The interesting feature for me is that the
> secondary appears to be wound in a number of sections. The photograph
> (which also turns up on the front of R Iannini's book, "Build Your Own
> Space Age Laser etc. etc.") shows a cylindrical secondary of typical
> proportions, wound in half a dozen sections of relatively closewound
> turns, each separated from the next by a couple of inches. It may be
> that this is merely black tape, holding the windings in place, but I
> think it is something else.
>
> The picture isn't overly clear. What does anyone think?
>
> Incidentally, the photo credit on older catalogues was given to someone
> in Texas (first name Dan) but the latest attributes the TC to Durlin Cox
> of Resonance research, Baraboo, WI.
>
> Richard Craven
> ---
> CMPQwk #1.42 UNREGISTERED EVALUATION COPY
My guess, for spacing out the secondary, would be to put the higher
potential end portion of the secondary as far as possible above/from the
much lower potential primary to prevent secondary-to-primary arching.
--Bob