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Re: Does a "regulating" coil really waste energy?

Original poster: "Dave Larkin by way of Terry Fritz <twftesla-at-qwest-dot-net>" <teslaman15-at-hotmail-dot-com>

You are quite right.  The myth that off axis inductance directly 'wastes' 
energy is a hangover from the old days.  All it does is reduce k a little, 
which may lead to slightly increased spark gap losses beacuse of the longer 

More generally on the subject of real time tuning - Greg Leyh used a monster 
litz wire tuner on his big coil, and quite a few others have tried other 
schemes since, no-one has reported any amazing benefits.
The Tesla coil is actually a fairly low Q device (under sparking 
conditions), so these small alterations seem to make little difference.


>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: Does a "regulating" coil really waste energy?
>Date: Mon, 27 May 2002 14:57:27 -0600
>Original poster: "Jolyon Vater Cox by way of Terry Fritz 
><twftesla-at-qwest-dot-net>" <jolyon-at-vatercox.freeserve.co.uk>
>Does a "regulating" coil or off-axis inductor actually waste energy?
>If the coil is primarily an inductive reactance isn't the energy 
>stored  in the magnetic field rather than dissipated? Furthermore, is it 
>possible the non-coupled flux could be actually advantageous from the
>voltage-boosting viewpoint, acting as inductor in effectively series with 
>secondary capacitance ACROSS the magnetic coupling of the primary and 
>coils - rather in the same manner that the "leakage"reactance of the HV
>transformer primary is made to resonate with the capacitive reactance of 
>tank capacitor in a resonant-charging TC set-up?

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