10 kW DAM发射机激励器保护设计封锁不足的改进与实践  

Improvement and Practice of 10 kW DAM Transmitter Exciter Protection Design Blockade Insufficient

作　　者：张南 郑谦 ZHANG Nan;ZHENG Qian(Henan Province Xuchang Zhongbo Broadcasting Station,Xuchang 461002,China;Henan Province Pingdingshan Medium Wave Broadcast Station,Pingdingshan 467036,China)

机构地区：[1]河南省许昌中波转播台,河南许昌461002 [2]河南省平顶山中波转播台,河南平顶山467036

出　　处：《电声技术》2024年第11期188-190,共3页Audio Engineering

摘　　要：针对10 kW数字调幅(Digital Amplitude Modulation,DAM)发射机额定功率时正常、低功率时损坏的现象,重点介绍该故障的分析过程、检测原理及维修过程。通过发射机激励器保护的改进设计,解决激励器在低功率时保护设计封锁不足的问题。Aiming at the failure of 10 kW Digital Amplitude Modulation(DAM)transmitter in normal and low power,the analysis process,detection principle and maintenance process of the failure are introduced.By improving the design of the transmitter exciter protection,the problem of insufficient blocking of the exciter protection design at low power has been solved.

关 键 词：数字调幅(DAM) 激励器 改进设计 封锁不足 

分 类 号：TN83[电子电信—信息与通信工程]