铁路通信用高频开关电源杂音电压及其测试

Noise Voltage of the High Frequency Switch Power Supply in Railway Communications and the Testing

铁路通信用高频开关电源为铁路通信网络提供动力,杂音电压是衡量开关电源质量优劣的重要电参数,电源杂音超出规定值会影响通信网络的正常运行。详细分析各项杂音电压内涵及其对通信设备产生的影响,并介绍杂音电压的测试方法。

High frequency switch power supply used in railroad communications provides railroad communications network with driving force. Noise voltage is an important electric parameters to judge the quality of switch power supplye. The power noise voltage exceeding specified value can affect the operation of communications network.This paper analyzes the content of the noise voltage and its impact on communications equipment, and introduces the testing methods of noise voltage.