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.
出处
《广播与电视技术》
2017年第11期101-104,共4页
Radio & TV Broadcast Engineering
关键词
调频发射机
保护电路
高频功率继电器
衰减器
FM transmitter, Protection circuit, High frequency power relay. Attenuator
