稳压电源是实现电能变换和功率传递的主要设备。在信息时代，农业、能源、交通运输、通信等领域迅猛发展，对电源产业提出个更多、更高的要求，如节能、节材、减重、环保、安全、可靠等。这就迫使电源工作者不断的探索寻求各种乡关技术，做出最好的电源产品，以满足各行各业的要求。开关电源是一种新型的电源设备，较之于传统的线性电源，其技术含量高、耗能低、使用方便，并取得了较好的经济效益。-Regulated power supply is the main equipment to realize electricity transformation and power transmission. In the information age, areas such as agriculture, energy, transportation, communications, rapid development, more and higher demands for the power industry, such as energy saving, material saving, weight reduction, environmental protection, safe and reliable. This has forced power workers to explore for various scholar technology, make the best power supply products, to meet the requirements of all walks of life. Switching power supply is a new type of power equipment, compared with the traditional linear power supply, its high technical content, low energy consumption