课程设计小信号放大

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1、课程设计论文题目：小信号放大器设计院（系）：电子工程与自动化学院专业：学生姓名：学号：指导教师：职称：讲师2012年1月12日15摘要小信号放大分为低频小信号放大和高频小信号放大。。高频率放大器一般用于各种信号接收器，例如手机，电视机，收音机，遥控器等等。凡是无线电通讯都要用的。低频小信号放大器主要用在音频放大，例如听音乐的各种功率放大器的前置部分。低频小信号放大电路的用途非常广泛，它能够把微弱电信号增强到所要求的值。电路由线性元件电阻、电容和非线性元件，即半导体晶体管组成。在进行低频小信号放大时，电路中既有直流信号，又有交流信号，因此在分析

2、和设计电路时问题错综复杂，利用叠加定理和低频小信号因素，可使问题变得容易。本次设计我采用了仪用放大器进行放大，低通滤波器的知识，利用NE5532芯片来实现运放。关键字：小信号放大，仪用放大器，低通滤波器，NE5532，15目录引言·························································································31设计任务及要求·····························································

3、···32、设计方案及元器件及其对应实现功能介绍·······················32.1.同相放大电路···································································32.2差分放大电路···································································42.3仪表放大器·······························································

4、······42.4.方案确定···········································································5152.4.1主要器件选择·································································52.4.3工作原理······································································53.滤波部分··················

5、······························································73.1滤波器的介绍··········································································74．调试方法与步骤···································································95结论记录·············································

6、····································96课程设计总结········································································107谢辞·······················································································1015参考文献··························································

7、························10附录··························································································11附录一：设计原理图·····································································11附录二：PCB图··································································

8、···········、12附录二：元件清单····························································