Re: Best location for spark gap

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "robert & june heidlebaugh by way of Terry Fritz <teslalist-at-qwest-dot-net>" <rheidlebaugh-at-desertgate-dot-com>

Gary Lau: I have used just such a power supply. The moment the spark gap
fires the power supply goes to max power arc and dosent stop untill the
voltage drops to less than 300v. $25,000 high voltage rectifier  made by
Gilfillan Bros goes to smoke and the main 100A 3-phase breakers trip. By
adding a simple 15T 1" x 6" air core series choke coil The problem stopped
after replacing 3 rectifiers paid by USAF. One of those hard learned lessons
    Robert  H
-- 


 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > Date: Mon, 06 Jan 2003 20:17:25 -0700
 > To: tesla-at-pupman-dot-com
 > Subject: RE: Best location for spark gap
 > Resent-From: tesla-at-pupman-dot-com
 > Resent-Date: Mon, 6 Jan 2003 20:18:45 -0700
 >
 > Original poster: "J. B. Weazle McCreath by way of Terry Fritz
 > <teslalist-at-qwest-dot-net>" <weazle-at-hurontel.on.ca>
 >
 >
 > At 06:08 PM 06/01/03 -0700, you wrote:
 >
 >> Original poster: "Lau, Gary by way of Terry Fritz <teslalist-at-qwest-dot-net>"
 > <Gary.Lau-at-hp-dot-com>
 >>
 >> If I may be the devil's advocate for a moment...
 >>
 >> I fully agree that when using NST's, having the gap across the power
 > supply >lowers the high frequency stresses applied to the NST.
 >>
 >> But when using a power supply that is not current limited - a distribution
 >> or potential transformer, I wonder if the placement of the gap affects the
 >> ballasting requirements?  I've never used such a power supply.  Has anyone
 >> who has tried it both ways?
 >>
 >> Regards, Gary Lau
 >> MA, USA
 >>
 >
 > Hi Gary, Coilers,
 >
 > You bring up an interesting point.  If it ever gets above freezing out in
 > my shop, I'll have to try the two different hookups of my PDT and see if
 > I notice any changes in behavior.  Like you, I'd be interested in hearing
 > from others about this.
 >
 > 73, Weazle, VE3EAR/VE3WZL
 > G-1#1214
 >
 > Listening: 147.030+ and 442.075+
 > E-mail:    weazle-at-hurontel.on.ca
 > or ve3ear-at-rac.ca
 > Web site:  http://www.hurontel.on.ca/~weazle
 >
 >