Re: Double Throw Spark Gap (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Thu, 11 Oct 2007 22:47:07 -0500
From: Crispy <crispy@xxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Double Throw Spark Gap (fwd)

The point is that I WANT the remaining ion trails, and air cooling would
remove them.  The gap will be firing initially about 5 times a second.
I want this to happen at a relatively constant voltage.  But, after each
primary firing, I want about 30 or so other firings to occur at around
700Hz at lower voltages.  Air cooling remove the ionized trails that
would aid in this.

Chris B aka. Crispy

On Thu, 2007-10-11 at 21:22 -0600, Tesla list wrote:
> ---------- Forwarded message ----------
> Date: Thu, 11 Oct 2007 20:47:39 -0700
> From: Barton B. Anderson <bartb@xxxxxxxxxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: Double Throw Spark Gap (fwd)
> 
> Exactly right Chris, your first bang is your highest voltage arc across 
> the gap. As the electrodes heat up, the arc voltage will decrease, but 
> hopefully they will balance out on the high side. Thus, air cooling 
> becomes important. RSG's have a natural air cooling mechanism. Static 
> gaps require external cooling to achieve the same. But yes, any 
> remaining ionized particles within the static gap will decrease the 
> dielectric withholding voltage, and thus, reigniting the gap will happen 
> at a lower voltage. Air cool the static gap to resolve this issue (I 
> know, it's another motor on your watt limit). Just run a power cord from 
> your neighboring dorm room!
> 
> Take care,
> Bart
> 
> Tesla list wrote:
> > ---------- 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
> >>
> >>
> >>
> >>     
> >
> >
> >
> >
> >
> >
> >   
> 
> 
>