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众所周知,电源干扰是计算机系统及其电子设备中最主要、危害最严重的干扰源。电网的冲击可能给微机带来毁灭性的破坏。据统计,计算机故障中有90％是电源引起的,电网50Hz正弦波上有可能出现成百上千伏的尖峰电压,给智能化设备正常运行带来严重干扰,因此电源是微型计算机的主要干扰源。图1是一个设计的供给单片微机8031工作的电源电原理图。它除了应用具有传统的稳压、滤波和隔离防电网干扰外,还具有专门的硬、软件抗干扰措施,其中运用了避错、容错技术,从而能抗电源瞬态欠压、瞬间脉冲干扰和掉电等,能保证单片机在恶劣的检测环
It is well-known that power supply interference is the most important and most harmful source of interference in computer systems and their electronic equipment. The impact of the power grid may cause devastating damage to the computer. According to statistics, 90% of the computer failures are caused by power supply. The 50Hz sine wave of the power grid may have hundreds of kilovolt spikes, which may cause serious interference to the normal operation of intelligent equipment. Therefore, the power supply is the main interference of the microcomputer source. Figure 1 is a schematic view of a power supply that is designed to supply a single-chip microcomputer 8031. In addition to its application of traditional voltage regulation, filtering and isolation of power grid interference, but also has a special hardware and software anti-jamming measures, including the use of error-avoidance, fault-tolerant technology, which can withstand power transients undervoltage, instantaneous pulse interference and Power-down, etc., to ensure that the microcontroller in the harsh test ring