武汉工程职业技术学院（设计）论文1目录调频对讲机电路的安装与调试···········································································4摘要·····································································································································41概述································································································································52总体电路的确定·····································································································62.1工作原路及框图························································································62.1.1工作原理····························································································62.1.2框图·······································································································72.2总体电路原路图························································································72.2.1电路原理图··························································ぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁ?72.2.2电气指标参数·················································································93单元电路的分析与设计···················································································113.1FM接收机电路原理与分析·······························································113.1.1输入选频网络···············································································113.1.2高频选频放大器··········································································123.1.3混频电路与本振电路································································133.1.4二混频、限幅中放、鉴频电路··········································153.1.5静噪电路··························································································18调频对讲机电路的安装与调试23.1.6音频功放电路···············································································193.1.7直流稳压源电路··········································································203.2FM调频发射电路························································