2022年彩色显像管的说课教案 .pdf

学习好资料欢迎下载一、分析教材1、本节知识在电视机原理与维修（高等教育出版社）（第八章）第二节彩色显像管，第 209 页，在讲解了（第一节）黑白显像管及偏转线圈的知识后，进一步学习彩色显像管的知识，对彩管的分类、结构特征，工作原理等作进一步的了解，对以后的学习起到很好地帮助；2、切实体现了“以能力为本位”的职教特色作为职中生来说，学习电视机原理的目的不是为了从事设计或管理工作的，而是为了掌握中级电视机维修工应知、应会的本领。在处理电视机 原理与维修两者之间的关系时，降低了理论教学的难度，精简原理分析的内容；突出维修技能，将重点放在了对学生的动手能力的培养上。3、作为升学的教材，我认为学生理解起来要困难点；如果作为有基础的就业班的培训教材，我认为是非常好的。二、分析考纲1、由于我们的电子专业课教材没有教学参考书，也没有教学大纲，对于升学班，我们就按照省教科所发的每年的考试要求来上课；2、四川省教科所对本节的知识要求是：掌握所列知识内容，能在分析、解决实际问题过程中灵活运用（C 类）；3、电子专业的考试题从1999年开始考彩电方面的知识以来，还很少考；4、随着现代电子技术地发展，现在大家都用彩色电视机了，出现了许多新型的电视机，彩色显象管的发展也是非常快的，从原来的老式的发展到现在的平板电视机。所以在 2006年的高考中，在本节考了1 个选择题：自会聚彩色显像管的会聚磁环总共有（B）A、二片B、四片C、三片这道题的知识面非常好的，这就要求我们在教学过程中一定要做到知识的过手问题。三、学情分析职高学生的文化水平并不高，对理论知识和对电路原理的分析都比较困学习好资料欢迎下载难，所以在教学过程中必须注意深入浅出，浅显易懂，便于他们接受。四、教学目的1、通过讲解让学生掌握彩管的类型有哪些；2、掌握自会彩管的特点有哪些？3、掌握会聚磁铁组合件的作用；4、让学生对彩管的结构和工作原理进行掌握。五、教学重点1、本节重点是让学生掌握彩色显象管的特点；2、彩色显象管的电子枪的结构和黑白显象管的电子枪的结构的区别。六、教学难点1、彩管的内部结构及工作原理；2、静会聚的调整方法。七、突破难点的关键：1、我先制作了幻灯片，利用投影仪来进行讲解，这样就非常直观和形象，有利于对本节知识有更深刻地了解；2、为了加深同学们的印象，再利用实物来对照进行讲解；3、在讲理论课时，边讲边讲操作。八、教学方法：3、突出一个“浅”字：4、讲知识时，注意到了深入浅出，浅显易懂；5、突出一个“用”字：6、主要是通过教学提高同学们的动手能力7、突出一个“新”字：8、由于电视技术的发展太快，在教学上内容要不断更新，补充许多新知识；9、利用现代的多媒体技术和实物来进行讲解。九、教学准备：文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1学习好资料欢迎下载为了能够让同学们更容易理解和掌握彩色显象管的原理和结构，我利用计算机制作了本节的幻灯片；这样，不管是对就业班的同学还是升学班的同学，都能达到最理想的教学效果。十、课时：1 课时。十一、教学过程：（一）、预习本节课（5 分钟）带着问题：黑白显象管和彩色显象管有哪些异同？来看书。（二）、导入：（3 分钟）前面我们学习了黑白显像管的结构和工作原理，请一位同学的回答黑白像管的电子枪的结构。（三）、新课讲解：（30 分钟）利用多媒体进行全过程的讲解：前言：显像管显像管是电视机上很关键的器件，它的任务是完成电-光的转换，再现黑白（或彩色）图像。显像管价格贵，因此无论对用户还是对维修人员来说，显像管是最有修理价值和维护保养价值的器件。显像管分为黑白显像管和彩色显像管。彩色显像管有三种；三枪三束管、单枪三束管和自会聚管，前两种彩色显像管因电路较复杂、调整较繁琐而趋于淘汰，现在生产和使用最多的是自会聚管。显像管类型较多，具有不同的屏幕尺寸偏转角和管颈，荧光屏屏面有圆球形、超平面形、纯平面形，其中纯平面形是发展方向。不论哪种显像管，其测试方法和维修保养方法基本是相同的。1显像管的构造及管脚连线名称（1）、黑白显像管的构造如图8-1 所示：（2）、单枪三束彩色显像管的构造：(3)、自会聚彩色显像管构造：文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1学习好资料欢迎下载（4）、彩色电视机显象管的电子枪：（5）、彩管插座外形示意图：（6）、彩管内部示意图：（7）、四极磁环:使红枪和蓝枪发射的电子束作相反方向移动（8）、六极磁环:使 R 红枪和蓝枪发射的电子束作相同方向移动（9）、彩管色纯外形：（10）、高压放电的操作方法：限制大电流放电。应通过一只10K、2W 左右的金属膜电阻进行弱火花放电。放电接地点可直接接在彩管锥体外面紧贴着的金属编织线（地线），而不可接在高频头、散热片、屏蔽罩等电路板上的接地点，防止高压脉冲电流集成电路等器件。操作者要单手操作，防止电击。如图8-7 是高压放电的操作方法。仔细放电后，再拔掉视放板（彩管座），从管脚处进行测试。2、彩色显像管插座彩色显像管插座是显像管各电极(高压阳极外)与显像管电路的连接媒体，其质量的优劣直接影响到光栅和图像的好坏。由于彩色显像管所需的电压很高（如加速极为 480850V、聚焦极为 4.56KV），所以彩管插座比黑白管插座的结构更为复杂，性能要求更高。彩管插座的型号不同，但其测试维修方法是基本相同的。图8-8 所示为彩管的一种常用插座外形示意图。（四）、课堂练习：请一位同学说出彩管有哪些类型？（五）、小结：文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1学习好资料欢迎下载1、这节课主要学习了彩色显象管，从分类、结构、作用进行讲解。2、利用黑白像管来进行比较分析彩管。培养自己的转化思想分析问题，培养自己的创新思维。（六）、作业：1、什么叫黑底荧光面？采用黑底有什么好处？2、请说明采用平面直角显象管的电视机有什么优点？（七）、板书设计：彩 色 显 象 管一、显像管：1、显像管是电视机上很关键的器件，它的任务是完成电-光的转换，再现黑白（或彩色）图像。2、分类：显像管分为黑白显像管和彩色显像管。彩色显像管有三种；三枪三束管、单枪三束管和自会聚管。二、显像管的构造及管脚连线名称：1、黑白显像管的构造；2、单枪三束彩色显像管的构造；3、自会聚彩色显像管构造；4、彩色电视机显象管的电子枪；5、彩管插座外形示意图；6、彩管内部示意图；7、四极磁环:使红枪和蓝枪发射的电子束作相反方向移动；8、六极磁环:使 R 红枪和蓝枪发射的电子束作相同方向移动；9、彩管色纯外形；10、高压放电的操作方法。三、彩色显像管插座：文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 HI4M4M3O8V4 ZP7G9E8W2G1文档编码:CO1S1U10I1I6 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