数字电路方波三角波发射器设计

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1、数字电路方波三角波发射器设计目录摘要·······································································································I1电路设计总方案及原理·····································································11.1电路设计原理··································································

2、···············11.2电路设计方案·················································································12各组成部分的工作原理·····································································22.1方波发生电路的工作原理·····························································22.2方波---三角波转换电

3、路的工作原理···············································32.3三角波---正弦波转换电路的工作原理···········································62.4电路的参数选择及计算·······························································82.5总电路图···········································································

4、·············93电路仿真························································································103.1方波---三角波发生电路的仿真·····················································103.2三角波---正弦波转换电路的仿真·················································114函数发生器的调试·················

5、··························································124.1调试过程与结果分析····································································124.2调试结果的分析及结论·································································125心得体会···················································

6、······································13参考文献·····························································································14摘要本数字电子设计是通过555定时器进行函数发生器的课程设计。首先，由555定时器构成的多谐自激震荡器得到方波；然后方波通过一阶RC积分电路得到三角波；最后三角波再通过二阶RC积分电路得到正弦波。在确定了系统的的总设计方案之后，我们根据以往的知识及查阅的信息得出了系统的设计框图

7、。再就是硬件设计，采用模块设计方法。最关键的就是波形发生的设计，要仔细设计各个波形发生的程序原理和电路。最后也就是仿真，通过仿真软件Protues进行仿真，这是对前面所有的工作进行核实及改进。关键词：555定时器；正弦波；方波；三角波正弦波振荡电路；积分电路；Protues1电路设计总方案及原理框图1.1电路设计原理框图图1.1电路设计原理框图1.2电路设计方案所用到的函数发生器是指能自动产生正弦波、三角波、方波及锯齿波、阶梯波等电压波形的电路或仪器。根据用途不同，有产生三种或多种波形的函数发生器，使用的器件可以是分立器件(如低频信号函数发生器S10

8、1全部采用晶体管)，也可以采用集成电路(如单片函数发生器模块)。为进一步掌握电路的基本理论及实验调试技术，本