电子技术基础与技能 第4版 课件 01 半导体二极管

半导体二极管WUHANSHIYIBIAODIANZIXUEXIAO目录CONTENTS温故知新启智探究归纳总结巩固应用温故知新01Option01WehavemanyPowerPointtemplatesthathasbeenspecificallydesigned.Option02WehavemanyPowerPointtemplatesthathasbeenspecificallydesigned.Option03WehavemanyPowerPointtemplatesthathasbeenspecificallydesigned.Option04WehavemanyPowerPointtemplatesthathasbeenspecificallydesigned.WehavemanyPowerPointtemplatesthathasbeenspecificallydesignedtohelpanyonethatissteppingintotheworldofPowerPointfortheveryfirsttime.WehavemanyPowerPointtemplatesthathasbeenspecificallydesignedtohelpanyonethatissteppingintotheworldofPowerPointfortheveryfirsttime.WehavemanyPowerPointtemplatesthathasbeenspecificallydesignedtohelpanyonethatissteppingintotheworldofPowerPointfortheveryfirsttime.WehavemanyPowerPointtemplatesthathasbeenspecificallydesignedtohelpanyonethatissteppingintotheworldofPowerPointfortheveryfirsttime.发光二极管温故知新启智探究02启智探究任务一认识半导体二极管猜一猜查一查启智探究任务一

认识半导体二极管整流二极管变容二极管发光二极管检波二极管开关二极管光电二极管学一学启智探究任务一认识半导体二极管画一画结构符号正负极性启智探究任务一认识半导体二极管1、有横杠一端为负极。2、有白色双杠的一端为负极。3、有小圆一端是负极，大圆是正极。4、引脚长的为正，短的为负。看一看正负极性正负极性正负极性正负极性正负极性正负极性结构符号结构符号结构符号结构结构结构符号启智探究任务二二极管的导电特性做一做以组为单位分发实验器材,验证二极管的导通条件。通过实验现象，分小组讨论实验结论。根据电路图连接实物图。要求：接通电源，观察小灯在电路中的发光情况，并做好记录。STEP01STEP02STEP03S闭合后观察电路实验现象灯_______(亮或灭)灯_______(亮或灭)结论______________________________________启智探究任务二二极管的导电特性想一想二极管的导电特性单向导电性启智探究任务二二极管的导电特性01020304练一练红色发光管

,绿色发光管

,（导通或截止）分析启智探究任务三二极管的极性识别与性能检测测一测1二极管的极性识别0102量程选用：用欧姆档R×100档或R×1K档测试原理：利用二极管的单向导电性黑表笔接正极红表笔接负极黑表笔接负极红表笔接正极启智探究任务三二极管的极性识别与性能检测二极管的极性识别测一测1启智探究任务三二极管的极性识别与性能检测测一测2二极管的性能检测判断标准：质量好的二极管具有单向导电性，不具备此特性的二极管质量不好。试一试启智探究任务三二极管的极性识别与性能检测测一测管子名称整流二极管发光二极管稳压二极管R×100正向电阻反向电阻R×1K正向电阻反向电阻用万用表测发光二极管,可用万用表欧姆档的最高档(R×10K)启智探究任务三二极管的极性识别与性能检测比一比二极管质量检测归纳总结03二极管的结构与符号01二极管的导电特性02二极管的识别与检测03巩固应用巩固应用04巩固应用思考题：有个同学在测一个二极管反向电阻时，为了使万用表测试和管脚接