Today’s microwave ovens are often equipped with inverterized MW generators. Compared with old style appliances, the magnetron is no more driven by a bulky ferro-resonant power supply, but by an electronic inverter, lighter, more efficient and able to modulate the MW power, at least to a certain extent. In this paper, parametric design analysis for single ended converter aimed to MW ovens is presented, and results compared with Pspice simulation and practical measurements on a commercially available magnetron inverter are discussed.