The main role of communication power supply is to provide stable and reliable power supply for communication equipment to ensure the normal operation of communication equipment and data transmission. Communication power supply is the heart of the communication system, and its stability and reliability directly affect the stability and reliability of the entire communication system. Once the communication power supply system fails, it may cause power supply interruption of communication equipment, which in turn leads to interruption of communication circuits și paralizia sistemului, provocând pierderi uriașe în beneficiile economice și sociale .
