中波发射机调制编码板电源电路研究  

Research and Operation and Maintenance of Power Circuit of Medium Wave Transmitter

作　　者：马阔飞 MA Kuofei

机构地区：[1]河南广播电视台无线电台管理中心新乡中波转播台,河南新乡453000

出　　处：《今日自动化》2024年第11期138-140,共3页Automation Today

摘　　要：文章针对DX型10 kW中波发射机调制编码板的电源电路展开研究。调制编码板是中波发射机音频系统的核心,其电源电路的稳定性直接影响到发射机的音频质量和整机稳定性。文章重点探究了调制编码板上供电电源稳压调制以及音频信号电路的输入转换对功放模块的控制工作原理,分析了电缆联锁电路的逻辑理论。在此基础上,总结了调制编码板电源电路运维的要点,包括B+稳压电源输出电压和调制B–电源驱动信号的检查以及功放电缆联锁维保,可为相关工作提供参考。This paper studies the power supply circuit of DX 10 kW medium wave transmitter modulation coding board.The modulation coding board is the core of the medium-wave transmitter audio system,and the stability of the power supply circuit directly affects the audio quality of the transmitter and the stability of the whole machine.This paper explores the control principle of the modulation on the output module,and analyzes the logic theory of cable interlocking circuit.On this basis,the key points of the power circuit operation and maintenance of the modulation coding board are summarized,including the inspection of the output voltage of B+stable power supply and the modulation B-power drive signal and the interlocking maintenance of power amplifier cable,which can provide reference for related work.

关 键 词：中波发射机 调制编码板 电源电路 

分 类 号：TM73[电气工程—电力系统及自动化]