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



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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