Re: 4 stage SISG

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Anthony R. Mollner" <penny831@xxxxxxxxxxxxx>

Hey Doc, how does that compare to a SRSG using the same electrodes?

-----Original Message-----
From: Tesla list [mailto:tesla@xxxxxxxxxx]
Sent: Monday, February 19, 2007 3:29 PM
To: tesla@xxxxxxxxxx
Subject: [PHISH] Re: [PHISH] Re: 4 stage SISG


Original poster: "resonance" <resonance@xxxxxxxxxxxx>



The small tungstens will work but you probably will not hit optimum
spark output.

The parallel copper tube gap works better because it offers faster
quenching (pri shutoff) and allows the sec coil to ring free without
trying to transfer energy back into the pri.  Most nst systems
actually ring out perhaps 3-5 envelopes and reducing this helps performance.

Dr. Resonance


>I use 7 total gaps for a 12/60 nst system and 4 total gaps for a
>12/30 system.  Use a 100 cfm blower fan on a 6 inch ID PVC tube with
>the copper pipe sections, 3 inches long x 3/4 inch, mounted
>inside.  I will send you some photos off-list as a guide.
>
>The small tungsten gap will work but overheating on runs over 10-15
>seconds could cause a quenching (unable to properly disconnect the
>pri to allow ringing in the sec coil) problem.
>
>Dr. Resonance
>
>>Speaking of which, I'm making a static gap for my small scale TC now. It's
a
>>little 4" secondary with 1700 turns. I was planning on a two gap spark gap
>>using the those evil thoriated tungsten rods. Any thoughts on the number
of
>>gaps that should be used for best quenching in a little 15/30 TC? For that
>>matter, is a fan really necessary at this low level?
>>
>>Tony
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