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时间：2018-01-22
《mm74c925芯片的功能及其应用》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。
1、电》 2005年05月30日毕业设计（论文）2005届课题名称：MM74C925芯片的功能及其应用专业名称：工业电子姓名：学号：班级：电子指导教师：毕业论文（设计）毕业设计（论文）任务书系部：电子工程系设计（论文）题目：MM74C925芯片的功能及其应用指导教师：职称：工程师
2、类别：毕业设计学生：专业：工业电子班级：电子023081、设计（论文）的主要任务及目标阐述MM74C925芯片的功能及其应用，并将MM74C925芯片应用到实际电路中。2、设计（论文）的主要内容（1）、计数器相关知识介绍；（2）、MM74C925芯片功能介绍；（3）、电路原理。3、主要参考文献【1】《电子报》四川科学技术出版社2002第47期【2】梁恩主梁思维：《ＰＲＯＴＥＬ９９ＳＥ》清华大学出版社【3】张毅坤陈善久裘雪红：《数字电路原理及应用》西安电子科技大学出版社【4】童诗白：《模拟电子技术基础》清华大学出版社【5】
3、屈有安王应海史小波：《电子技术应用》-1-毕业论文（设计）4、进度安排设计（论文）各阶段任务起止日期（1）收集有关资料3月10日-3月18日（2）整理并修改资料3月20日-4月1日（3）画出相关原理图4月3日-4月20日（4）用word对文字处理4月22日-4月25日（5）最初打印出设计4月27日-5月15日（6）再次校准，最后的整理和修改5月17日-5月30日-1-毕业论文（设计）摘要锁相环路是一个闭环的自动相位控制系统。它在现代电子系统中有广泛的应用。这次毕业设计我介绍了调频、鉴频电路，锁相环电路，常用的4046芯片
4、。在这篇文章中我主要分析了锁相调频电路和锁相鉴频电路，这两个电路都用了4046这个芯片，文章中我也仔细的介绍了4046的引脚和内部原理框图。关键词：锁相环调频鉴频CD4046毕业论文（设计）目录一、引言 ···································································································1二、调频、鉴频的原理···················································
5、·····························1（一）调频原理·······················································································1（二）鉴频原理·······················································································2三、锁相环电路····································
6、······················································2（一）锁相环路主要特点··············································································2（二）锁相环路的跟踪特性···········································································3（三）锁相环路的工作原理··················
7、·························································3（四）锁相环路的基本特性········································································3四、CD4046的工作原理···················································································3（一）引脚功能················
8、··········································································3（二）CD4046内部电原理框图····································································
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