This power can be widely used in air purification, such as odor treatment and fume purification; It can also be used in high voltage power supply device equiped in the oil-water separation or electrostatic separation equipments. Meanwhile, this power can be applied to charging the capacitor. According to users’ feedback, its performance is very well. The features of this powder: high reliability, able to withstand transient and steady-state short-circuit conditions, maintenance free for many years, output voltage waveform without distortion, high purification efficiency.