中波发射机+5V电源故障的分析与处理  

Fault Analysis and Treatment of+5V Power Supply for Medium Wave Transmitter

作　　者：张富强 Zhang Fuqiang(Xinzhou Medium Wave Broadcasting Station,Xinzhou Shanxi 034000,China)

机构地区：[1]忻州中波转播台

出　　处：《山西电子技术》2019年第6期75-77,共3页Shanxi Electronic Technology

摘　　要：在DAM全固态数字调制中波广播发射机中,直流稳压板+5V电源起着重要作用,+5V电源一旦出现故障,轻者造成停机,严重时会造成大量功放元件损坏。本文根据忻州中波转播台的实际情况,分析了电源的工作原理,介绍了故障检修及原因分析,并提出改进措施。In the DAM all-solid-state digital modulation medium wave broadcasting transmitter,DC stabilizer+5V power supply plays an important role.Once the+5V power supply fails,it may cause shutdown,and even cause a large number of amplifier elements to be damaged.According to the actual situation of Xinzhou Medium Wave Broadcasting Station,the working principle of the power supply is analyzed in this paper,the troubleshooting is introduced and the causes to troubles are analyzed.At last the measures for improvement are put forward.

关 键 词：直流稳压板 循环调制板 +5V电源 

分 类 号：TN838[电子电信—信息与通信工程] TN948.53