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

["Dex Dexter" <dexterlabs@xxxxxxxxxxx>]

It's an experimental fact that too high coupling can be the cause of flashovers and racing sparks but...The point of max potential is at the terminal (top load) of the secondary in 1/4 wave resonance coils.Typical couplings used (0.1-0.2 range) can be hardly  high enough for the point of max potential to be shifted somewhere else.Perhaps you are referring to increased secondary local voltage gradients vs higher coupling instead?That's a different thing and more possible to occur I think.


Dex
   

--- resonance@xxxxxxxxxxxx wrote:

From: DC Cox <resonance@xxxxxxxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Cc:
Subject: Re: [TCML] Sudden and unexplained destructive racing spark flashovers
Date: Mon, 29 Jun 2009 20:19:02 -0700

Over coupling is one cause of racing sparks.  It produces more than one HV
point near the top 1/4 of the coil which can cause local ionization and
eventual flashover in this area.



Dr. Resonance






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