Switching Power Supply Application In Communication Sistem

21st century is the age of people recognized information, communication technology with the development of human civilization from day to day more advanced, more into every field of people’s life today.The development of communication technology brings to our life more convenient, it is so people increasingly rely on the communication technology, for the stability of the communication system, convenience, security requirement is becoming more and more high.Communication as a system of communication power supply energy suppliers, in the communication stations, communications equipment and communication terminal is equivalent to the car engine for communication system to provide a steady stream of energy input.The core technology is switching power supply, communication power supply is obvious value is key to the technology.Based on communication technology production and living to provide more convenience for the people as the starting point, hence the importance of communication power supply system in communication equipment, the article focuses on the application of switching power supply in communication system, in the field of communication power supply technology has a certain practical significance.The research process of this paper mainly through the communication enterprise internship contact actual communication equipment, combined with the theoretical knowledge to practical applications.Article began mainly according to the requirements of the junction communications equipment for power system technology, the analysis of communication power supply do overview and introduction;Over the next several common switching power supply topology is discussed in this paper, including Buck, Boost, Buck-Boost, Cuk, Sepic, Zeta,Finally mainly discuss two application of switching power supply in communication system, including how to avoid pull arc phenomenon caused by the dc power electric plug and on-board equipment automatically boot technology.Finally further confirm the importance of switch power supply technology in communication system.