正弦波方波三角波.doc

课程设计名称：设计制作一个方波\三角波\正弦波\锯齿波发生器

摘要

函数信号发生器是一种能够产生多种波形，如三角波、锯齿波、矩形波〔含方波〕、正弦波的电路。该电路可为实验室提供波形频率范围为0.02Hz~20kHz，幅值2v的稳定信号源。大大降低了实验本钱，有效的简化了实验的操作步骤，是实验室小型电路信号发生器的理想所选，具有广泛的应用价值。

此信号发生器采用模块化结构，主要由以下三个模块组成，即正弦波发生器模块、方波发生器模块、三角波发生器模块。在设计此函数信号发生器时，采用模块化的设计思想，使设计起来更加简单、容易、条理清晰。同时调试起来也更容易。

经过一系列的分析、准备，本次设计除在美观方面处理得不够得当之外,完成了全部的设计要求。

关键词：函数信号发生器、LM324、集成运算放大器、晶体管差分放大

目录

前言···························································4

第一章函数发生器的设计要求·····································5

1.1波形发生器的特点及应用··································5

1.2设计任务及要求··········································5

第二章电路设计原理及单元模块···································6

2.1设计原理·················································6

2.1单元模块·················································6

2.1.1RC选频振荡模块·······································6

2.1.2过零比拟器···········································8

2.3.3产生三角波模块·········································9

第三章安装与调试··············································12

3.1电路的安装···············································12

3.2电路的调试···············································12

3.2电路的分析···············································13

结论··························································14

参考文献························································14

附录一·························································15

附录二·························································16

前言

科学技术是第一生产力。三次工业革命使我们的社会发生了翻天覆地的变化，使我们由手工时代进入了现代的电器时代。同时科技在国家的国防事业中发挥了重要的作用，只有科技开展了才能使一个国家变得强大。而作为二十一世纪的主义，作为一名大学生，不仅仅要将理论知识学会，更为重要的是要将所学的知识用于实际生活之中，使理论与实践能够联系起来。

波形发生器在实际生活中有很重要的作用，影响着科技的开展，在当今社会又好又快的生活方式是人们所向往的，因此作为一名学习知识的青年，应该学好根底知识，设计出是人民满意的东西，产出人性化和自能化的电子产品，另一方面电子产品不断的更新，需要我们更加扎实的根底。

本设验主要完成正弦波-方波-三角波之间的转换，在调节滑动变阻器的阻值时产生不同的波形，当电阻调大或调小都会影响其波形的失真，由RC选蘋振荡电路产生正弦波，用过零比拟器产生方波，方波的根底上有两种方法产生三角波，一种是通过积分电路产生三角波，另一种通过低通滤波，两种电路各有所长。

整个电路的设计借助于multisim2010仿真软件和数字逻辑电路相关理论知识，并在multisim2010下设计和进行仿真，得到了预期的结果。

第一章波形发生器设计要求

1.1波形发生器的特点及应用

随着