rc振荡电路设计报告

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1、※※※※※※※※※※※2013级※※※模拟电子技术课程设计※※※※※※※※※※RC振荡电路设计姓名学号院、系、部班号完成时间摘要RC振荡电路一般由放大电路，反馈网络，选频网络和稳幅环节四个部分组成。它适用于低频振荡，一般产生几赫~几百千赫的低频信号。RC振荡电路中，放大电路和反馈网络构成正反馈系统，共同满足正弦波振荡条件。选频网络的作用是实现单一频率的正弦波振荡。另外，有了稳幅环节就可以使振荡幅度达到稳定。本设计主要采用文氏电桥振荡电路连接示波器构成正弦波发生器。通过按RC振荡电路组成部分计算参数设计仿真电

2、路，焊接电路板，实现振荡频率为160Hz的正弦波发生器实物。RC振荡电路有许多种形式，常用的RC振荡电路有文氏电桥振荡电路，移相式振荡电路和双T型选频网络振荡电路等。但除了文氏电桥振荡电路，其它RC振荡电路的应用并不广泛。本设计按指标要求选用具有成本低、性能指标高、可靠、使用简单、安装调试方便等优点的文氏电桥振荡电路设计频率为160Hz的正弦波发生器。关键词：RC振荡电路文氏电桥振荡电路稳幅正弦波发生器目录第1章设计任务与要求·········································

3、···················································4第2章方案与论证··································································································42.1RC振荡电路组成······················································································

4、······42.2放大电路·······································································································22.3反馈网络·······································································································22.4选频网络····················

5、···················································································22.5稳幅环节·······································································································32.6正弦波发生器····················································

6、·············································3第3章单元电路设计与参数计算················································································33.1振荡频率·······································································································33.2起

7、振条件·······································································································33.3选择集成运放放大器························································································33.4选择二极管········································

8、····························································43.5示波器··········································································································4第4章仿真与调试··························