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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
>>
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
value?
John Freau