中波15kW 50Ω负载开关柜的设计与制作——机柜整体布局与元器件选取  

Design and Manufacture of Medium Wave 15 kW 50Ω Load Switch Cabinet——The Overall Layout of the Cabinet and the Selection of Components

作　　者：贾卫东 赵晓蕊 JIA Weidong;ZHAO Xiaorui(Qinghai Radio and Television Bureau 917 Station,Haixi 817099,China;Shaanxi Ruyi Radio and Television Technology Co.,Ltd,Xianyang 712099,China)

机构地区：[1]青海省广播电视局九一七台,青海海西州817099 [2]陕西如意广电科技有限公司,陕西咸阳712099

出　　处：《中国有线电视》2021年第2期157-160,共4页China Digital Cable TV

摘　　要：15kW 50Ω中波假负载与同轴转换开关在结构、电路设计上融为一体,通过逻辑电路控制,实现中波发射机主机、备机、假负载和天线之间的有效切换,提高了电台发射机工作的可靠稳定性,同时也使机房设备布局得到改善而更加合理。15 kW 50Ω medium-wave dummy load and coaxial switch are fused together on the structure,circuit design.Through the logic circuit control,it can realize the effective switching between medium wave transmitter host,stand-by,dummy load,and antenna.It greatly improves the radio transmitter work reliable stability,and also makes the improved machine room equipment layout more reasonable.

关 键 词：中波主机备机 结构布局 假负载 元器件选取 

分 类 号：TN934.81[电子电信—信号与信息处理]