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Re: Top Load Optimizing - Q?




>
> Original Poster: Terry Fritz <twftesla-at-uswest-dot-net>

Hi Terry, 
Question at bottom - 
>
> >> They usually have to add capacitance or more turns to the primary circuit 
> >> which is something they wish they had known before.  They KNOW when they 
> >> get it right ;-))  The only heat loss that really matters is that when a 
> >> coil is out of tune, ALL the energy goes into burning up the spark gap. 
> >> When they are in tune, half that energy goes into the arcs (and the other 
> >> half still tries to burn up the gap ;-)). 
> > 
> >Under what exact experimental conditions did you measure that and 
> >how did you measure it?  I have measured transfer efficiencies in 
> >excess of 80% in some coils and given that one can get rid of 
> >secondary energy in a spark before it returns to the primary, the 
> >gap loss is nowhere near that bad *under this particular condition*. 
> > 
> >Regards, 
> >Malcolm 
> ><snip> 
> > 
>
> Hi Malcolm, 
>
>         It comes from measureing my coils.  My large coil delivers about 225
> watts 
> to the arc and burns 276 in the gap.  My small coil delivers 80 watts to 
> the arc and burns 112 in the gap.  So I generalized...  My gaps do not try 
> to quench anymore but I try and minimze primary loss. 
>
> Cheers, 
>
>         Terry

Terry, 
Regarding quenching and primary loss - 

Have you attributed the primary losses to most or all of the 1/2 power loss? Is
the primary loss simply I^2R loss? 

Thanks, 
Bart