电子计算机对电源的要求很高,不仅要求稳压稳频,而且要求不间断的供电,特别是目前广泛应用的微机系统,一旦交流输入中断,即使是瞬时的掉电,就会使半导体存贮器RAM中的信息消失,也可能影响磁盘与主机信息的交换,甚至破坏整个系统的工作状态。所以要提高计算机系统的可靠性,就必须保证有稳定可靠的交流电源供给计算机使用。微机系统一般包括磁盘机、打印机、CRT等配套 Computer requirements of the power supply is high, not only requires stable voltage regulator, but also requires continuous power supply, especially the widely used microcomputer system, once the AC input interrupt, even instantaneous power-down, will make the semiconductor storage RAM information disappears, it may also affect the exchange of disk and host information, or even undermine the working status of the entire system. So to improve the reliability of the computer system, we must ensure that a stable and reliable AC power supply to the computer. Computer systems generally include disk drives, printers, CRT and other facilities