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NST (fwd)
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From: D.C. Cox [SMTP:DR.RESONANCE-at-next-wave-dot-net]
Sent: Monday, May 25, 1998 9:43 PM
To: Tesla List
Subject: Re: NST (fwd)
to: Gary
Various forms of transformers usually abbreviated from amateur radio work
as follows:
xmfr --- transformer
NST --- neon sign transformer
PT --- potential transformer
PP --- pole pig
CT --- current transformer
A pole pig in ham radio you might wonder? Well, officer, the guy was
running 15 KW on 80 meters!!!!
DR.RESONANCE-at-next-wave-dot-net
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> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: NST (fwd)
> Date: Sunday, May 24, 1998 8:35 PM
>
>
>
> ---------- Forwarded message ----------
> Date: Sun, 24 May 1998 06:32:48 -0700 (PDT)
> From: gweaver <gweaver-at-earthlink-dot-net>
> To: Tesla List <tesla-at-pupman-dot-com>
> Subject: NST
>
> I have seen NST may times in other posts.
>
> What does NST stand for?
>
> Gary
>
>
>
>
>
> At 09:39 PM 5/22/98 -0600, you wrote:
> >
> >
> >---------- Forwarded message ----------
> >Date: Fri, 22 May 1998 13:33:04 EDT
> >From: FutureT <FutureT-at-aol-dot-com>
> >To: tesla-at-pupman-dot-com
> >Subject: Re: 42" spark from 12/30 NST (fwd)
> >
> >In a message dated 98-05-21 23:55:03 EDT, you write:
> >
> ><<
> >> You're talking about getting 42" sparks from a 12kv, 30ma NST?
> >> That sounds pretty efficient--is it possible?
> > >>
> >
> >Jonathan, all,
> >
> >You've probably already seen the specs for the above which I
> >posted yesterday (?). There are a few keys to getting the most
> >from an NST powered TC.
> >
> >First, resonant charging must be used...
> >the cap size must be matched to the NST size so that the reactance
> >of the tranformer is neutralized by the reactance of the cap. This
> >allows the NST to draw more than its rated current, actually about
> >double or more than its rated current. This coil draws 720 watts,
> >not the 360 watts that would be expected.
> >
> >Second, a good gap system must be used. I've had the best
> >results using synchronous rotary gaps with NST's.
> >
> >Third, the toroid must be the correct size for the system. It must
> >be selected so that only one output spark streamer is produced.
> >The production of multiple streamers will reduce the spark length
> >a little. Also the coupling should be optimized to obtain best one
> >streamer output. High secondary coil inductance also seems to
> >be quite important.
> >
> >Many people on this list have cautioned that the NST may be
> >strained by the above usage. This is possible, but I have not had
> >any failures in my systems, whereas many people have reported
> >NST failures while obtaining much shorter sparks. I will agree that
> >this usage does push the capabilities of the NST. I recommend that
> >this technique be used only by those who wish to obtain the maximum
> >possible output from any given NST.
> >
> >John Freau
> >
> >
> >