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微机电源安装在机箱内部,是为微机系统部件、选件和键盘提供稳定电压的直流电源,它是整个微机系统的动力来源。电源的好坏将直接影响整个微机系统的可靠性和稳定性。一旦电源出现故障,就会使微机系统瘫痪,甚至造成系统部件的损坏,尽管微机电源带有过压、过流保护,但使用过程中的维护仍然是十分重要的。笔者就多年从事电源维护的实践经验,介绍微机电源的组成、工作原理及常见故障的维护。
Microcomputer power supply installed in the chassis, is a microcomputer system components, options and keyboard to provide a stable voltage DC power supply, which is the power source of the entire computer system. The quality of the power supply will directly affect the reliability and stability of the entire computer system. Once the power failure, it will paralyze the computer system, or even cause damage to system components, although the microcomputer with overvoltage, overcurrent protection, but the maintenance process is still very important. The author has many years of experience in the maintenance of power supply, describes the composition of the microcomputer power supply, working principle and maintenance of common faults.