电子电工实习-音乐盒地制作.doc

目录 实习目的及安全常识·······················································2 1.1实习目的··························································2 1.2必备安全常识····················································2 1.3本次实习所用的元器件··············································2 常用仪表与工具···························································2 2.1主要工具························································3 2.2主要仪器仪表及使用·············································3 手工焊接与电子产品的装配·················································5 3.1手工焊接························································5 3.2工具介绍························································5 3.3焊接过程中的原理···············································5 3.4 焊接操作方法···················································5 3.5拆除焊点的方法·················································5 3.6焊接注意事项····················································7 3.7电子元件焊接装配···············································7 元器件特性及主要用途·····················································8 4.1电阻·····························································8 4.2三极管···························································9 4.3二极管···························································10 4.4电容······························································11 4.5扬声器···························································12 4.6 555芯片··················································12 5.音乐盒原理图及方框图·················································13 5.1音乐播放························································13 5.2音乐盒工作原理··················································14 5.3音乐和电路及实物图················································15 6.实习总结及体会··························································17 7.附录（音乐盒实物连接电路图） 1.实习目的及仪器 1.1实习目的 电工实习是电子信息工程专业重要的实践课程之一，在学习电类有关理论知识之后，通过一个电子产品的装配和调试过程，建立起对电子产品的感性认识是非常必要的。日常生活中的家用电器和工业