From: "Barton B. Anderson"
Date: Sun, 03 Jun 2001 14:05:05 -0700
Subject: Re: [TSSP] Re: Racing arc clues...
Hi John, I don't think the dots are a reflection, but rather upper secondary discharges. I changed the gamma on the image to take a better a look. http://www.classictesla.com/temp/2ndlighti1.jpg It looks like the corona ring and extended height of the toroid above the secondary that may be the cause to the breakout (note that this is not a typical "racing arc". Racing arcs on my coil went in a very straight path - this looks more like upper secondary breakout). The corona ring sheilding is non-existent and the toroid is pretty high above the coil. This can promote breakout at the top of the secondary. I'd bet if the toroid was lowered to where the bottom plane was even with the top winding (and corona ring removed), the problem would go away. Bart Anderson FutureT@aol.com wrote: > In a message dated 6/3/01 3:24:42 AM Eastern Daylight Time, > terrellf@qwest.net writes: > > > ============= > > Hi Robin, > > > > You coil is interesting! At one point it seems to resist racing arcs: > > > > http://www.geocities.com/rcopini/2ndlighti-1.jpg > > > > Robin, > > there seems to be little dots of corona light or something right > at the top of the secondary near the origin of the racing sparks. > Or are they just a light reflection? I wonder if there's something > happening right at the top of the secondary that may promote > the start of a racing spark under certain conditions? > > John Freau
Maintainer Paul Nicholson, paul@abelian.demon.co.uk.