RE: Double Throw Spark Gap (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Sun, 14 Oct 2007 08:42:55 +1000
From: A. Wang 2007 T476202 <tangara_02@xxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: RE: Double Throw Spark Gap (fwd)


About the TIG electrode and tungsten disc idea- I had that idea a while
ago, when looking at a rotating-anode x-ray tube. I mamaged to get hold of
most of the parts of the prototype. Neet to test it soon.

It could work as a diode sort of thing, where it allows current to pass to
the disc but not from.

Best if one could get hold of a rotating anode X-ray tube- they have a
nice fat tungsten disc which would work perfectly.

A.Wang 2007
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> Date: Thu, 11 Oct 2007 20:10:40 -0600
> From: tesla@xxxxxxxxxx
> To: tesla@xxxxxxxxxx
> Subject: Re: Double Throw Spark Gap (fwd)
> 
> 
> ---------- Forwarded message ----------
> Date: Thu, 11 Oct 2007 18:06:42 -0500
> From: Crispy <crispy@xxxxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: Double Throw Spark Gap (fwd)
> 
> My concern with a design based on the heating of electrodes is that,
> when first turned on, the electrodes start off cool.  Therefore, the gap
> will initially fire at a higher voltage than after it heats up.  Do
> remnant ionized trails in static gaps have anything to do with increased
> propensity to fire, or am I completely lost?
> 
> Thanks,
> Chris B aka. Crispy
> 
> On Thu, 2007-10-11 at 16:31 -0600, Tesla list wrote:
> > ---------- Forwarded message ----------
> > Date: Thu, 11 Oct 2007 13:50:24 -0500
> > From: David Dean <deano@xxxxxxxxxxxxxxxx>
> > To: Tesla list <tesla@xxxxxxxxxx>
> > Subject: Re: Double Throw Spark Gap (fwd)
> > 
> > On Wednesday 10 October 2007 08:46:06 pm you wrote:
> > 
> > >
> > > On yet another unrelated note,
> > > Does anyone have any feedback on my initial proposition of seriesing a
> > > static gap in the charging circuit to pulse power? 
> > 
> > Hi
> > 
> > Perhaps a less than optimum static gap design would be the order of the day.
> > 
> > I see a static gap with one electrode sharp and pointed and the other 
> > electrode flat.  A T.I.G. electrode and a tungsten disk. You need to observe 
> > polarity as some rectification will occur.
> > 
> > The point heats up lowering the firing voltage of the static gap allowing the 
> > ARSG to drain the storage cap further.  When the gap goes out it stars to 
> > cool raising the firing voltage while the storage cap is recharged. 
> > 
> > The trick would be to get just the right angle and degree of sharpness so the 
> > heating cooling cycle will just track the storage cap charge cycle.
> > 
> > Just a thought.
> > 
> > later
> > deano
> > 
> > 
> > 
> 
> 
> 

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