When the saturable inductor has not saturated,the magnetic switch shuts down, and when it saturates, it works in a directshort condition.So we can modulate the PWM signal using a saturable inductor.

• 工作在饱和条件下；磁开关闭合；PWM信号输入有效；以此实现了对PWM信号的调制.；通过对可饱和电感复位程度进行控制；即对复位后磁通密度的大小进行调节；从而可方便且经济地调节PWM脉宽