Purification DC parameter stabilized voltage power supply which is a new product from the improvement of the company's JJW (JSW) precision purification DC voltage regulation of ASY series is made on the principle of sine energy distribution.It is one of the DC stabilized voltage power supplies, currently is popular in the world. The controller responses rapidly and preciously on the load change at the input and output end; and adjusts timely the compensatory voltage on the sine energy distribution to control the output voltage effectively . Thus, the whole device has a high accuracy on the voltage regulation and excellent dynamic property. With the added filer of large capacity, it suppresses effectively the high order harmonic, peak voltage, and the noise interference signal, combining as the one output waveform more purely and integrating the voltage regulation, purification, interference resistance, and automatic protection. It is one of the most advanced stabilized voltage power supplies at present.