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对PC整体来说,PC电源虽然价格相对较低,但性能的好坏对整机的影响是非常大的。据统计,PC的常见故障中很多是与PC电源质量的好坏有着直接的关系,并影响着PC的使用寿命。针对目前使用PC电源普遍采用脉宽调制变换开关稳压电源,因为它具有体积小,变换率高,抗干扰性强,适应电压广等特点。根据所掌握PC电源的维修经验,阐述对脉宽调制变换开关电源常见故障的分析与排除方法。
The PC as a whole, although the price of PC power is relatively low, but the performance of good or bad the impact of the machine is very large. According to statistics, many of PC’s common faults have a direct relationship with the quality of PC power supply and affect the service life of PC. For the current use of PC power widely used PWM switching power supply, because of its small size, high conversion rate, strong anti-interference, to adapt to a wide range of voltage characteristics. According to the maintenance experience of the PC power supply, this paper describes the analysis and troubleshooting of the common faults of the PWM power supply.