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pri./sec. tuning

Original poster: "Mike Knowlton" <amdx@xxxxxxxxxxx>

Thanks for the info on pri./sec./ tuning.
Now my understanding is;
When the toroid arcs it causes the capacitance of the toroid to increase, this higher capacitance lowers the resonant frequency of the secondary. Thus the primary is tuned lower to match the resonant frequency of the secondary when it is arcing.