INSDC series high-voltage DC power supply is a high-voltage DC power supply specially designed and manufactured by Shaanxi blue sea Electric Co., Ltd. for each college and other places requiring high-voltage DC power supply. The design of the power supply adopts high-frequency switch transformation and closed-loop control technology, so that the high-voltage power supply has good output performance and system stability; the output over-current protection adopts cut-off protection, which has strong adaptability to the impact of the load; the high-voltage power supply has small volume and light weight by using the advantages of low loss under the high-frequency switch working mode of MOSFET to complete PWM transformation High efficiency and reliability.