Re: Latest magnifier results
Subject: Re: Latest magnifier results
Date: Tue, 10 Jun 1997 02:00:45 -0400 (EDT)
From: richard hull <rhull-at-richmond.infi-dot-net>
To: Tesla List <tesla-at-pupman-dot-com>
>Wild Bill Emery and I built a new primary for our magnifier Saturday.
>We increased its diameter by a total of four inches which reduced
>coupling to an acceptable degree (nope, we have not yet measured the
>We experimented with using a piece of 10 inch wide aluminum flashing
>as a transmission line. I expected horrendous corona off the edges.
>Nope, works very well, we saw no transmission line corona at all. It
>seems that the same physics which allow flashing to serve as a good
>low impedence ground conductor also allow it to serve as an admirable
>low impedence high voltage transmission line for magnifier work.
>Downside: it tens to flap a bit in light breezes.
>Next on the agenda: a new 100 amp breaker has to be installed, and
>we'll try moving up on the top load capacitance. We designed a new
>way of stacking our 36 by 8 inch toroids, so we'll probably next
>attempt two toroids. We'll also be moving up our tank capacitance
>from 0.015 ufd to 0.03 ufd. We're gonna leave the variac bypassed
Good goin' guys!!!
Glad to hear you are over the hurdle of 10'. That variac "high order"
number sounded fearsome. I hope it is repairable!
the transmission line is a real question area. I have seen our own Alex
Tajnsek run a length of bare 12 guage wire for a transmission line on
3-5 KW system with little corona! This is shown in the rear
section of my book on the CSN. There is physics and balance here, but
complex and not a trivial explanation to be found.
Keep up the good work down in the lone star state.
Richard Hull, TCBOR