1. Low power loss and high efficiency. The power transistor works alternately in the on-off switch state and the switching speed is very fast, which makes the power consumption of the transistor very low and the conversion efficiency can be greatly improved.

2. Wide range of voltage stabilization. The output voltage of the switching power supply is adjusted by the duty cycle of the excitation signal, and the change of the rout signal voltage can be compensated by frequency modulation or width modulation In this way, when the voltage of the power frequency grid changes to a certai want, it can still guarantee a relatively stable output voltage