In the IF transformer,the measure of improving exciting current was taken,and higher velocity of dragging charge from parallel capacitor when light loaded or no loaded was achieved to meet the condit.

• 在中频变压器中采用了加强激磁电流的措施,加快空载或轻载条件下前臂并联电容拉电荷的速度,从而满足了全桥准相移零压零流软开关主电路中前臂零电压开通和关断的条件。