开关电源监控接口电路及故障修理

Monitoring Interface Circuits of Switching Mode Power Supply and Failure Handling

介绍了常用的开关电源监控RS232接口电路的工作原理,对监控单元上的RS232←→TTL电平转换电路进行了论述,并对此类接口电路的故障进行了分析,对修复此类故障保证开关电源数据的实时上报和通信设备的安全运行具有相当重要的意义。

RS232 monitoring interface circuits' working principles of switching mode power supply in common use are introduced,and RS232←→TTL voltage converting circuits of monitoring units are discussed.Analyzing failures of this kind of interface circuits is very important to repair them and to ensure real-time data reporting of switching mode power supply and working safely of communicating equipments.