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Class-E tuning guide:
For those not already familiar with Class-E tuning the objective is to "land" the point with the little circle around it safely at the bottom of the cliff. If the voltage swings smoothly down to zero at this point then the MOSFET turns on with no voltage across it and no current flowing through it. Elimination of turn-on switching losses at high frequency and high voltage is the aim of the game.
The arrows on that diagram show how altering the various circuit parameters move that point.
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Solid state tesla coil calculator
