Re: [TCML] Sudden and unexplained destructive racing spark flashovers

[Yurtle Turtle <yurtle_t@xxxxxxxxx>]

A Tesla coil thinks air is a conductor.

Adam

--- On Mon, 6/29/09, Dex Dexter <dexterlabs@xxxxxxxxxxx> wrote:

> From: Dex Dexter <dexterlabs@xxxxxxxxxxx>
> Subject: Re: [TCML] Sudden and unexplained destructive racing spark flashovers
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Date: Monday, June 29, 2009, 4:36 AM
> 
> 
> 
> 
> 
> Speaking of spiders is a spider's web a conductive
> material?
> I guess it's not,but who knows.
> 
> Dex
> 
> ----- Original Message ----- 
> From: "Peter Terren" <pterren@xxxxxxxxxxxx>
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Sent: Saturday, June 27, 2009 7:20 PM
> Subject: Re: [TCML] Sudden and unexplained destructive
> racing spark 
> flashovers
> 
> 
> > Sounds like a primary to secondary flashover rather
> than a racing spark.
> > The primary should never get to 30 kV above RF ground,
> ie won't spark 1 
> > inch to the coil base although 10 turns up the
> secondary adds 5kV.  The 
> > problem is that a longish wire to RF earth will have a
> significant drop, 
> > so might develop 10kV across it.
> > So what was a safe 1.5 inches gap from primary to
> secondary might have 
> > become say 20kV plus 5kv plus 10kV. which will spark
> 1.25 inches. Get a 
> > few cosmic rays and occasionally it will jump this
> distance if all the 
> > voltages align.or if you have a primary strike.
> > ... or it could have just been a spider as I think
> happened to me once - 
> > hiding in the black cloth I cover the primary with to
> prevent light spill 
> > from the gap.
> >
> > Peter www.tesladownunder.com
> >
> 
> 
> 
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