D.c. power supply

摘要: A d.c. power supply for use in microwave ovens which an a.c. voltage having a commercial frequency is rectified and then chopped at high by means of switching element. The resultant smoothed before being applied to the oven. level sensed produce control pulse duty ratio becomes greater as lower. used ON-OFF operation By this circuit configuration, oven supplied with continuously-controllable flat waveform.