Re: Coil Efficiency

From: 	FutureT-at-aol-dot-com[SMTP:FutureT-at-aol-dot-com]
Sent: 	Monday, July 28, 1997 2:58 AM
To: 	tesla-at-pupman-dot-com
Subject: 	Re: Coil Efficiency

> Hi all,
>           It should be plain from the operational scenario I outlined 
> earlier that TC efficiency is going to vay considerably depending on 
> its loading conditions. You can see the effects of this in the gap 
> discharge under different secondary loading conditions. Max efficiency
> in terms of throughput is being obtained when the gap reaches minimum 
> brightness. In the coupled system this is the point at which Qsec has 
> dropped to allow coupling to become critical. From the primary's 
> point of view, the resistance reflected into it has become equal to 
> its own internal resistance. Since most of the resistance in the 
> primary circuit is a non-linear gap resistance, it is clear that a 
> non-linear load is required for this condition to be met (i.e. spark).
>     Resistance reflected into the primary is dependent on k and 
> Qloaded for the secondary. That being so, finding the optimum k for 
> the power the coil is running at is required to obtain best output 
> (and efficiency). To throw a fly into the ointment, you can achieve 
> the same loading conditions at different attached spark lengths. If 
> in doubt, get a good oscilloscope and capture the waveforms of a 
> normally running secondary.
> Another two cents,
> Malcolm


Seems to me that if one can quench the gap fast enough, this will 
dim the gap also, even if the Q drop does not result in a critical k

John Freau