方波发生器制作

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1、目录第一章方波发生器制作1.1设计任务······················································21.2设计方案·····················································21.3系统分析与设计················································21.4电路图、元器件清单、仪器仪表清单·····························31.5系统安装、调试与参数测量············

2、··························41.6实验体会···················································4第二章不规则变速循环彩灯的制作2.1设计任务······················································52.2总设计方案···················································52.3系统设计与分析·····································

3、··········52.4电路图、元器件清单、仪器仪表清单·····························6132.5系统安装、调试与参数测量·····································72.6实验体会·····················································8第三章声控延时灯的制作与调试3.1设计任务·····················································93.2总设计方案···········

4、········································93.3系统分析与设计···············································93.4电路图、元器件清单、仪器仪表清单····························103.5系统安装、调试与参数测量·····································113.6实验体会·····················································11参考文献··

5、························································12第1章方波发生器制作1.1设计任务13设计一个简易的方波发生器。在给定合适电源状态下利用相关器件制作一电路使该电路能输出一定频率的方波。当输出端接示波器，可观察并计算出所产生的方波波形及频率。1.2设计方案根据相关资料查找，可以运用74LS00及电容电阻设计一个方波发生电路。电路工作原理为：74LS00为“四2输入与非门”，内部有四个两输入与非门。A、B为输入端，Y为输出端，其共用电源端为（14脚）接地端为GND（7脚）

6、。当给5脚输入高电平，空脚4输入低电平，经过74LS00输出高电平，对电容C1进行充电，示波器上显示信号在Y轴正半部分。电容C1充电结束后，C1继续放电，当放电结束后，C1处相当于断开。2脚接地，输出低电平。空脚1输入高电平，经过74LS00输出高电平，对电容C2进行充电，此时4脚输入高电平。空脚5也输入高电平，经74LS00后输出低电平，在示波器显示信号为Y轴负半部分。C2充电结束后断开，重复第一过程。从此反复产生稳定方波。1.3系统分析与设计图1-1.引脚图图1-2.内部原理示意图该引脚图表示CT74LS00为“四2输入与非门”，

7、内部有四个两输入与非门。A、B为输入端，Y为输出端，其共用电源端为（14脚），接地端为GND（7脚）。131.4电路图、元器件清单、仪器仪表清单1.4.1电路图图1.3方波电路产生电路1.4.2元器件清单元器件清单如表1—1所示：表1—1元器件清单元器件名称个数74LS001电阻2电容2仪器仪表清单如1—2所示：表1—2仪器仪表清单仪器仪表名称个数万用电路板1万用表1电烙铁1焊芯1电工钳1导线若干131.5系统安装、调试与参数测量1.5.1系统安装系统安装步骤为：（1）根据设计要求，画实验电路图；（2）根据实验电路图，画出实物位置电路

8、线路，并印制装配图；（3）运用仿真软件对系统进行仿真；（4）准备电烙铁，预热，摆放好材料；（5）根据电路图进行焊接，布线，注意器件正负极；（6）认真检查焊接是否正确，用万用表检测所焊部分通电情况是否正常；（7）测试是否成