Re:Re: Question:

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

Original poster: "albert hassick by way of Terry Fritz <twftesla-at-qwest-dot-net>" <uncadoc-at-juno-dot-com>

Hi Gene and Godfrey.   I too 100%  agree with Godfrey.  Try to keep your
Allanson 15/60 tranny intact by using protection devices as per Terry's
web site as listed in blue right here---- (http://hot-streamer-dot-com).  Now
if you get a massive purple ball atop your coil, then shut it down
immediately, this seems to be the nearing of the 'kiss' of death for the
Allanson neons.  At least that is my experience with my four Allanson
15/60's.  These Allansons, at least in my opinion, they seem to give
excellent arcs for about 30 seconds of continuous use, and then they
begin to melt down, and in so doing give out a massive purple ball arc
atop the secondary in addition to greatly extended arc streamer output
for a brief time before the tranny gives up the ghost.  If you want to
keep your Allanson viable, then really try to limit your coil runs to
under 20 seconds or so and then let it and its tar package cool down for
at least 20 minutes.   In other words, for each second of actual coil
use, rest the tranny for one minute between runs.   If you are a
destructive user like me, then you will run the tranny until it begins to
'light up' and its destruction becomes accelerated. Then you will have to
depot them and chip away at the tar.  Remember, the tar and steel case of
the neon tranny heat up very slowly, but the secondary windings at the
internal heart of the tranny can overheat and make tar bubble within the
steel case very rapidly to the point of destruction..  Treat your neon
kindly!   But if you do manage to torch your tranny, then you can
possibly successfully unpot and rebuild it. And if you do not have too
much internal damage on your secondary coils, then you can unpot them and
you will then have a very durable tranny once you unpot it.     Al.

On Wed, 06 Jun 2001 17:36:56 -0600 "Tesla list" <tesla-at-pupman-dot-com>
writes:
> Original poster: "Loudner, Godfrey by way of Terry Fritz 
> <twftesla-at-qwest-dot-net>" <gloudner-at-SINTE.EDU>
> 
> Hi Gene
> 
> Your Allanson is excellent for tesla work. You have a good power 
> level at
> 15KV/60MA. My personal opinion is that you should not depot the NST, 
> but
> rather build Terry's protection circuit* to be found at
> http://hot-streamer-dot-com . Terry's circuit is specifically  designed 
> and
> tested to protect a 15KV/60MA. Since NSTs are usually used and no 
> protection
> circuit is perfect, you can depot for repairs if the NST eventually 
> fails.
> If you want more power later, you can always parallel in more NSTs. 
> I would
> keep an eye out for an identical NST at a bargain price. It is my 
> personal
> opinion that it is best to parallel only identical NSTs. 
> 
> The HV section your NST consist of two windings. The inner leads of 
> each
> winding is connected to the iron core of the transformer, which in 
> turn is
> connected to the transformer casing. This is the center tap thing. 
> This is
> done to reduce the insulation requirements. Be careful here because 
> this
> makes contact with the transformer casing a possible source of
> electrocution. You should also ground the transformer casing. This 
> will make
> each of the two HV windings see only 7,500V, resulting in less 
> stress on the
> insulation. But this grounding of the case will not necessarily 
> protect you
> from electrocution. 
> 
> Godfrey Loudner
> 
> *
> http://hot-streamer-dot-com/TeslaCoils/MyCoils/BigCoil/BigCoil.htm
> http://hot-streamer-dot-com/TeslaCoils/MyCoils/BigCoil/protection.jpg
> http://hot-streamer-dot-com/TeslaCoils/Misc/NSTFilt.jpg
> 
>  
> 
> 
> 
> 
> 
> > -----Original Message-----
> > From:        Tesla list [SMTP:tesla-at-pupman-dot-com]
> > Sent:        Wednesday, June 06, 2001 12:19 PM
> > To:        tesla-at-pupman-dot-com
> > Subject:        Question:
> > 
> > Original poster: "tesla by way of Terry Fritz 
> <twftesla-at-qwest-dot-net>"
> > <tesla-at-cyberverse-dot-com>
> > 
> > I am collecting parts for a future Tesla coil project. I bought a 
> NST that
> > I've never seen mentioned before, and am wondering what the list 
> thinks of
> > it.
> > 
> > it is a:
> > 
> > Allanson
> > 
> > 15kv-at-60ma
> > 
> > The spec I'm not sure about is this:
> > 
> > The secondary is "midtap grounded."
> > 
> > What does that mean?
> > 
> > Regards,
> > 
> > Gene lambert
> > 
> > 
> > 
> > 
> 
> 
> 
> 
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