DAM中波数字发射机低压电源系统改造实例与应用  

Example and Application of Low Voltage Power Supply System Transformation for DAM Medium-wave Digital Transmitter

作　　者：张忠伟 Zhang Zhongwei(Anyang Medium Wave Broadcasting Station,Henan Radio and Television Bureau,Henan 455000,China)

机构地区：[1]河南省广播电视局安阳中波转播台,河南455000

出　　处：《广播与电视技术》2023年第6期117-120,共4页Radio & TV Broadcast Engineering

摘　　要：全固态DAM中波数字发射机低压电源系统最早采用的是传统线性电源供电方式,线性电源本身存在启动速度慢、工作效率低、滤波电解电容占用设备空间体积大、电源故障率高等诸多弊端。我台站根据安全播出的技术需求对原有发射机低压供电系统进行了针对性的技术改进,文章将通过改进前后的电源系统原理及技术优势对比分析阐述,希望能为各位广电同仁提供一些借鉴作用。The low-voltage power supply system of all-solid DAM medium-wave digital transmitter first adopted the traditional linear power supply mode.The linear power supply itself has many disadvantages,such as slow starting speed,low working efficiency,large space volume of filter electrolytic capacity and high failure rate of power supply.According to the technical requirements of safe broadcasting,the station has improved the original transmitter lowvoltage power supply system.This paper will explain the comparative analysis of the power supply system principle and technical advantages,hoping to provide some reference for all radio and television colleagues.

关 键 词：控制脉冲 滤波电源 非线性失真 脉宽调制 振荡器 

分 类 号：TN834[电子电信—信息与通信工程]