Re: [TCML] Re: Position of baffle inside secondary

["Dex Dexter" <dexterlabs@xxxxxxxxxxx>]

Jim,

Optimum coupling for the best spark performance.And that one is determined only through the experiment on a real coil.The one you are refering to is theoretically determined  of coupling for the complete transfer of energy between oscillatory circuits.Is the optimum coupling for the best performance of Denicolai's coil k=0.187 as presented at:
http://www.elisanet.fi/dncmrc/
?
Dex

--- jimlux@xxxxxxxxxxxxx wrote:

From: jimlux <jimlux@xxxxxxxxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Cc:
Subject: Re: [TCML] Re: Position of baffle inside secondary
Date: Mon, 13 Jul 2009 20:25:34 -0700

Dex Dexter wrote:
> I was surprised to learn of the existance of the optimum coupling with respect to the best performance of SG coils.Dr.Resonance tells that the optimum for his coils is about k=0.13-014.Before that I just thought tighter the coupling better the performance and the only problems with tighter couplings were racing sparks and flashovers.But even if the conditions are such that secondary itself is free from undesired discharges ,beyond certain coupling point spark lenghts might start to diminish!Contrary to what I expected.Well,Dr. R makes all his coils with aspect ratio of the secondary H/D=4.5..and I suspect the systems with different H/D parameter have different optimum couplings.H/D ratio is not only thing to consider in respect to these matters but is a good candidate to put on test.
> 
> Dex        
> 
Marco Denicolai had a paper in Rev Sci Inst about this.

Antonio Carlos M. de Queiroz did an extensive analysis of this and there 
are optimum couplings for second, third, and fourth order systems of 
many types.

http://www.coe.ufrj.br/~acmq/tesla/magnifier.html might be a place to start.






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