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SUMMARYMicrowave ovens for home use generate microwaves with a magnetron. Since the magnetron is a diode vacuum tube with a nonlinear load characteristic, the power supply current is distorted. A scheme is used for control of the inverter power supply to drive the magnetron so that the class A standard value of the guideline for home and general-purpose harmonic prevention is met. In this paper, a control method is reported that simultaneously provides harmonic suppression of the inverter power supply using a voltage resonant circuit and the zero voltage switching.

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