全固态10kW调频广播发射机应急改造方案  

All-solid-state 10kW FM Broadcasting Transmitter Emergency Reformation Scheme

作　　者：于书平 

机构地区：[1]新疆新闻出版广电局传输中心762台,新疆833499

出　　处：《广播与电视技术》2017年第11期101-104,共4页Radio & TV Broadcast Engineering

摘　　要：10k W发射机在天线系统失配或驻波比过大时,保护电路马上动作自动切断整机电源,使功放停止工作,发射机处于关闭状态。本文分析了保护控制电路,对系统进行了改造,遇到故障时系统将自动降低输出功率,最大限度的降低了停播率。As the antenna system is mismatched or VSWR is too large, the protection circuit of 10kW transmitter automatically cut off the machine power so that the power amplifier stops working and the transmitter is closed. This paper analyzes the protection circuit and proposes the system reformation scheme to reduce the output power and broadcasting accidents.

关 键 词：调频发射机 保护电路 高频功率继电器 衰减器 

分 类 号：TN832[电子电信—信息与通信工程]