Swithc Mode Power Supply For Microwave Heating Based on the Boucherot Effect

摘要

This paper describes anew self-resonating switch-mode power- supply for driving CW magnetrons, based on the Boucherot effect. A detailed circuit analysis is given and its performance is evaluated for an 800W/2450MHz magnetron, whilst work at high power driving a magnetron up to 40kW is reported. A comparison of the supply with the conventional Power-supply used in microwave ovens is made and the Principal features of the new design are found to be: low Energy dissipation under short-circuit conditions, low ripple Current and voltage waveforms that result in more precise Control in the rang 20-100/100 of rated power, high efficiencies And small size and weight.