《电子信息专业英语（第3版）》高职全套教学课件

电子信息专业英语Chapter1IntroductiontoElectronicTechnology电子技术简介Chapter2ElectronicParts电子器件Chapter3ElectronicCircuits电子电路Chapter4ElectronicInstrument&Measurement电子仪器设备与测量Chapter5ElectronicsProducts电子产品Chapter6CommunicationSystem通信系统Chapter7ComputerTechnology计算机技术Chapter8ElectronicCAD&Manufacturing电子CAD和生产Chapter9ElectronicsOccupation电子职业工作全套可编辑PPT课件

本课件是可编辑的正常PPT课件Chapter1IntroductiontoElectronicTechnology电子技术简介

教学目标1.1★电子技术发展史：掌握电子技术发展的真空管、晶体管和集成电路三个阶段及标志事件。★通过电子技术发展史、新加坡理工学院、电气电子工程学科三篇文章学习电子技术知识。1.2★新加坡理工学院：掌握国外大学的性质、地理位置、下属院系、教师工作人员、开设课程、教学设施、就业等。1.3★电气电子工程学科：掌握电气电子工程学科覆盖的领域、有关课程、就业方向、主要课程简介。本课件是可编辑的正常PPT课件1.1 Lesson1DevelopmentofElectronics

电子技术发展史NewWordsTechnicalTerms技术词汇electronicsn.电子学keyn.钥匙；解答；关键；键componentn.成分；元件adj.组成的vacuumtuben.真空管transistorn.晶体管integratedcircuitn.集成电路electrontuben.电子管sealedadj.密封的；seal过去分词electronn.电子electroden.电极amplifyvt.放大，扩大，增强transmitvt.传输，发射applicationn.应用，应用程序；申请radion.无线电通信；收音机communicationn.交通；通信specializedadj.专门的；专业的broadcastv.广播；n.广播节目TechnicalTerms技术词汇astronomicallyadv.天文数字地；天体地availableadj.可得到的；可利用的devicen.器件，设备；部件；组件benefitvt.有益于，有助于radarn.雷达，电波探测器measurevt.测量,估量；n.测量objectn.对象,物体；目标vi.反对echon.回声，回波microwaven.微波detectionn.探测，侦查，发觉impracticaladj.不切实际的，不现实的laboratoryn.实验室functionn.功能，作用；[数]函数tinyadj.

极小的，微小的comparisonn.比较，对照；比喻consumevt.消耗，消费，耗尽reliableadj.可靠的，可信赖的本课件是可编辑的正常PPT课件1.1 Lesson1DevelopmentofElectronics

电子技术发展史NewWordsTechnicalTerms技术词汇manufacturevt.制造，加工；n.制造业Texas

Instruments德州仪器（公司名）large-scaleintegrationn.大规模集成电路very-large-scaleintegrationn.超大规模集成电路permitv.许可，允许n.许可证chipv.许可，允许n.许可证videocameran.摄像机portableadj.轻便的，便携式的本课件是可编辑的正常PPT课件1.1 Lesson1DevelopmentofElectronics

电子技术发展史Thehistoryofelectronicsisastoryofthetwentiethcenturyandthreekeycomponentsarevacuumtube,transistor,andintegratedcircuit.Avacuumtube(Fig.1-1)alsocalledanelectrontubeisasealedglassinwhichelectronsflowbetweenelectrodesseparatedbyvacuum.Vacuumtubewasinventedintheearly20thcentury.Withtheinventionofvacuumtubeitbecamepossibletoamplifyandtransmittheelectricalenergy.Thefirstapplicationsofelectrontubeswereinradiocommunications.CommunicationtechnologywasabletomakehugeadvancesbeforeWorldWarIIasmorespecializedvacuumtubesweremadeformanyapplications.Radiobroadcastinggrewastronomicallyinthe1920sandradiobecametheprimarysourceofentertainment(Fig.1-2).Televisionwasinventedin1927andfinallybecamewidelyavailable.DevelopmentofthetelevisionasanelectronicdevicebenefitedfrommanyimprovementsmadetoradarduringWorldWarII.Radar(Fig.1-3)measuresthedistanceanddirectiontoanobjectusingechoesofradiomicrowaves.Itisusedforaircraftandshipdetection.Afterthewar,electrontubeswereusedtodevelopthefirstcomputers(Fig.1-4),buttheywereimpracticalbecauseofthesizeoftheelectroniccomponents.

In1947,thetransistorwasinventedbyateamText本课件是可编辑的正常PPT课件1.1 Lesson1DevelopmentofElectronics

电子技术发展史ofengineersfromBellLaboratories,forwhichtheyalsoreceivedaNobelPrize.Thetransistorfunctionslikethevacuumtube,butitistinybycomparison,weighsless,consumeslesspower,ismuchmorereliable,andischeapertomanufacture

(Fig.1-5)

.Transistorshavereplacedvacuumtubesinjustaboutallelectronicsdevices.Thefirstintegratedcircuitwasdevelopedinthe1950sbyTexasInstrumentsCompany.Thefirstintegratedcircuitscontainedonlyafewtransistors,large-scaleintegration(LSI)andvery-large-scaleintegration(VLSI)followedbythemid-1970s.VLSItechnologypermitsustobuildsystemswithhundredsofthousandsoftransistorsonasinglechip.Videocameras,portabletelephones,andpersonalcomputersareonlyexamplesofdevicesmadepossiblebyintegratedcircuits.Text本课件是可编辑的正常PPT课件1.1 Lesson1DevelopmentofElectronics

电子技术发展史FiguresFigure1-1VacuumTubeFigure1-3HowRadarWorksFigure1-2RadiointheHome

Figure1-5ComparisonofTube,Transistor,ICChipFigure1-4VacuumTubeComputer本课件是可编辑的正常PPT课件1.1 Lesson1DevelopmentofElectronics

电子技术发展史Ⅰ．Choosethebesttechnicaltermtocompletethefollowingstatements.Exercises1．Thedevelopmentofelectronicshashadthreeimportantsteps:（）,（）and（）.A.computer B.integratedcircuit C.vacuumtube D.transistor2．Thefirstapplicationofelectrontubeswerein（）.A.radio B.television C.communication D.broadcasting3．（）hadsurpassedradioforhomeuseandentertainment.A.Communication B.Television C.Videocamera

D.Personalcomputer4．Usingechoesofradiomicrowaves,radarcandetect（）.A.acar B.aship C.aplane D.rain5．Thefirstelectroniccomputerincluded18,000（）andused200kilowattsofelectricalpower.A.transistors B.vacuumtubes C.ICs D.electroniccomponents6．Atransistorisasemiconductordeviceusedto（）electronicsignals.A.produce B.amplify C.reduce D.switch本课件是可编辑的正常PPT课件1.1 Lesson1DevelopmentofElectronics

电子技术发展史Ⅰ．Choosethebesttechnicaltermtocompletethefollowingstatements.Exercises7．Inmostapplications,vacuumtubeshavebeenreplacedby（）andothersemiconductordevices.A.electrontubes B.transistors C.silicon D.germanium8．Themostadvanced（）arethemicroprocessors,whichcontroleverythingfromcomputersand

cellularphonestodigitalmicrowaveovens.A.semiconductors B.wafers

C.transistors D.integratedcircuits本课件是可编辑的正常PPT课件1.1 Lesson1DevelopmentofElectronics

电子技术发展史Ⅱ．TranslatethefollowingsentencesintoChinese.Exercises1．Marconipioneeredthedevelopmentofthewirelesstelegraphin1896andlong-distanceradio

communicationin1901.2．Vacuumtubesstrengthenedweakaudiosignalsandallowedthesesignalstobesuperimposedon

radiowaves.3．Transistorislikesolidstateequivalentofvacuumtube,withnovacuumandglasstube;electrons

movefromcathodetoanode(

theyarecalledsourceanddrainnow

)andtheelectronflowis

controlledbyagatewhichactssimilartothegridinvacuumtube.4．Comparedtovacuumtube,transistorsweresmaller,moredurable,reliable,consumelesspowerand

producelessheat.5．TexasInstrumentmadehugecontributiontotheworldofelectronics:theintegratedcircuit.6．JackKilby,anengineerinTI,theinventorofintegratedcircuit,becameoneoftherecipientsofthe

NobelprizeinPhysics.本课件是可编辑的正常PPT课件1.2 Lesson2SingaporePolytechnic

新加坡理工学院NewWordsTechnicalTerms技术词汇Singaporen.新加坡polytechnicadj.各种工艺的n.理工专科学校institutionn.学院；协会；机构technologistn.技术人员；工艺人员；技师professionaladj.专业的；职业的n.专业人员industrializationn.工业化campusn.（大学）校园suburbn.郊区departmentn.部门；系electricaladj.有关电的；电气科学的mechanicaladj.机械的；手工操作的architecturen.建筑学；建筑式样presentadj.现在的；出席的；vt.赠送full-timeadj.全部时间的；专职的part-timeadj.部分时间的；兼职的dedicatedadj.专注的；献身的staffn.职员，工作人员TechnicalTerms技术词汇associateadj.副的；联合的；vi.交往commitvt.致力于，承诺，从事visionn.视力；幻象；vt.想象hectaren.公顷equipvt.装备，配备state-of-the-artadj.最先进的；最高水准的facilityn.设备，设施；灵巧；容易halln.礼堂；大厅workshopn.车间；工场；研讨会supportiveadj.支持的；支援的；赞助的collaboratevi.合作strategicadj.战略上的，战略的partnershipn.合伙企业；合伙；合作关系exposevt.暴露；使处于…的影响之下graduaten.毕业生；研究生goonto继续去；转入；延续到captainn.船长；队长，首领本课件是可编辑的正常PPT课件1.2 Lesson2SingaporePolytechnic

新加坡理工学院NewWordsTechnicalTerms技术词汇senioradj.年长的；高级的；n.年长者executiven.执行者；经理；adj.执行的corporationn.公司；企业entrepreneurn.企业家本课件是可编辑的正常PPT课件1.2 Lesson2SingaporePolytechnic

新加坡理工学院SingaporePolytechnic,thenation’sfirsteducationalinstitutionofitskind,wassetupin1954totraintechnologistsandprofessionalstosupporttheindustrializationandeconomicdevelopmentofSingapore(Fig.1-6).Thecampus(Fig.1-7)islocatedatDoverTowninthewesternsuburbofSingapore.SingaporePolytechnichassixschoolsandtwodepartments:SchoolofArtsandSocialSciences,SchoolofBusiness,SchoolofChemicalandLifeSciences,SchoolofElectricalandElectronicEngineering,SchoolofMechanicalEngineering,SchoolofArchitecture,DepartmentofMathematics，andDepartmentofEducation.Atpresent,thenumberofstudentsisover18,000,withfull-timeandpart-timestudents.Thereareadedicatedteamofabout1,500staff,includingprofessors,associateprofessors,lecturers,scientificresearchers,andadministrativestaff,allcommittedtohelpingthePolytechnicrealizeitsvisionofproducingqualifiedgraduates.Tosupportstudentslearningandpersonaldevelopment,thePolytechnic’s38-hectarecampusisfullyequippedwithstate-of-the-artfacilities.Amodernlibrary(Fig.1-8),well-equippedlecturehalls(Fig.1-9),air-conditionedclassrooms,thelatestandmostadvancedequipmentlaboratoriesandworkshopsText本课件是可编辑的正常PPT课件1.2 Lesson2SingaporePolytechnic

新加坡理工学院providethemostsupportivelearningenvironmentsforstudents.SingaporePolytechnichascollaboratedwithfamouscorporationssuchasIntel,Cisco,Motorola,etc.Thestrategicpartnershipensuresthatstudentsareexposedtothebestandlatesttechnologiesinsupportoftheirlearningactivities.Todate,graduate(Fig.1-10)outputfromSingaporePolytechniciscloseto155,000,someofwhomhavegoneontobecomecaptainsofindustries,seniorexecutivesofmulti-nationalcorporations,andsuccessfulentrepreneursandprofessionalsinSingaporeandoverseas.Text本课件是可编辑的正常PPT课件1.2 Lesson2SingaporePolytechnic

新加坡理工学院Figures

Figure1-6SingaporeMerlionFigure1-7CollegeMainBuildingFigure1-9LectureHallFigure1-8LibraryFigure1-10GraduationCeremony本课件是可编辑的正常PPT课件1.2 Lesson2SingaporePolytechnic

新加坡理工学院Ⅰ．Decidewhetherthefollowingstatementistrueorfalse,andexplainyouranswers.Exercises1．SingaporePolytechnicisthefirstuniversityinSingapore.2．SingaporePolytechniccurrentlyoffers49full-timediplomacoursesintheareasofappliedsciences,

business,design,engineering,humanities&socialsciences,andinformation&ITtoaround18,000

students.3．AlltheinstructorsinSingaporePolytechnicareprofessorsorassociateprofessors.4．SPproducessuccessfulgraduateswhoareleadersintheirownfield.本课件是可编辑的正常PPT课件1.2 Lesson2SingaporePolytechnic

新加坡理工学院Ⅱ．TranslatethefollowingsentencesintoChinese.Exercises1．PolytechnicsinSingaporeprovidethree-yeardiplomacourses.Polytechnicsofferawiderangeof

coursesinvariousfields,includingengineering,businessstudies,accountancy,tourismand

hospitalitymanagement,masscommunications,humanities,andsocialsciences.2．Polytechnicgraduateswithgoodgradescancontinuetopursuefurthereducationatlocalandmany

overseasuniversities,notablythoseinAustralia,NewZealand,andtheUnitedKingdom,andbe

exemptedformodulescompletedintheirpolytechnics.3．TheNationalUniversityofSingaporeisSingapore’soldestuniversity.Itisthelargestuniversityin

thecountryintermsofstudentenrollmentandcurriculumoffered.Theuniversityisconsideredto

beoneofthemostprestigiousuniversitiesinAsia.4．EnrolasaninternationalstudentattheHongKongUniversity,andyouwillenjoyawideand

flexiblechoiceofundergraduateprogramstaughtinEnglish−plustheadvantagesofavaried

culturalenvironment.本课件是可编辑的正常PPT课件1.3 Lesson3ElectricalandElectronicsEngineeringProgram

电气电子工程专业NewWordsTechnicalTerms技术词汇programn.大纲；方案；程序；节目solidadj.结实的n.固体；立方体foundationn.基础；地基；基金会handlen.柄；把手vt.处理；操作labn.[口]实验室varietyn.种类；多样commonadj.共同的；通常的n.普通fundamentaladj.基本的，根本的coren.核心；果心；要点；磁心optionn.选择；选择权；选项microelectronicsn.微电子学flexibleadj.灵活的；柔韧的careern.职业；生涯prospectn.前途；预期；景色v.勘探telecommunicationn.电信；远距通信instrumentationn.仪表装置；仪表化computingn.计算TechnicalTerms技术词汇maintenancen.维护，维修；保持descriptionn.描述，描写resistorn.电阻（器）capacitorn.电容（器）inductorn.电感（器）；感应器Ohm’slaw欧姆定律seriescircuit串联电路parallelcircuit并联电路threephasecircuit三相电路transformern.[电]变压器；变形金刚powern.电源；功率；政权；幂generationn.产生；一代powergeneration发电，发电量distributionn.分配；分布dioden.二极管bipolarjunctiontransistor双极型晶体管，晶体管commonbase共基极本课件是可编辑的正常PPT课件1.3 Lesson3ElectricalandElectronicsEngineeringProgram

电气电子工程专业NewWordsTechnicalTerms技术词汇commonemitter共发射极commoncollector共集电极configurationn.结构；配置field-effecttransistor场效应晶体管commongate共栅极；共闸极commonsource共源极commondrain共漏极operationalamplifier运算放大器differentialamplifier差分放大器multi-stageamplifier多级放大器poweramplifier功率放大器filtern.滤波器；过滤器v.过滤oscillatorn.振荡器rectificationn.整流；改正regulationn.规则；校准；adj.规定的powersupplier电源供应器combinationallogiccircuit组合逻辑电路TechnicalTerms技术词汇logicgate逻辑门decodern.译码器，解码器multiplexern.多路选择器addern.加法器multipliern.乘法器；乘数programmablelogicdevice可编程逻辑器件sequentiallogiccircuit时序逻辑电路flip-flopn.触发器；翻转registern.寄存器；登记；v.登记countern.计数器；柜台；相反地memoryn.记忆；内存，存储器digital-to-analogconverter数字—模拟转换器analog-to-digitalconverter模拟—数字转换器本课件是可编辑的正常PPT课件Lesson3ElectricalandElectronicsEngineeringProgram

电气电子工程专业Thethree-yearElectricalandElectronicsEngineeringprogramprovidesasolidfoundationinthetheoryandpracticeofelectronics.Programequipsstudentswiththeknowledgeandskillstohandleelectronicdevices,circuitsandsystems.ElectricalandElectronicsEngineeringstudentslearnthroughacombinationofdesignandlabwork.Thismixoftheoryandpracticalapplicationallowsstudentstothinkthingsthroughandthenapplytheirideasinavarietyofreallifesituations.Besidesbeingtechnologicallycompetent,theywillalsodevelopeffectivecommunication,problem-solvingandteamworkskillsreadyfortheworkplace.StudentswillgothroughacommonElectricalandElectronicsEngineeringfundamentalcourses.Thesecorecourses[areBasicElectricalEngineering,AnalogElectronics,andDigitalElectronics.Theywillthenselectoneofthefollowingoptionsfortheirsecondandthirdyearofstudy.TheseoptionsareElectronicsEngineering,ComputerEngineering,Microelectronics,orCommunicationTechnology.Studentswillhaveexcellentandflexiblecareerprospectsintelecommunications,instrumentationandcontrol,computing,consumerandindustrialelectronicsindustries.Theirjobareasmayincludeproductdesignandtesting,processimprovement,maintenance,marketing,andservices.Text本课件是可编辑的正常PPT课件Lesson3ElectricalandElectronicsEngineeringProgram

电气电子工程专业ThefollowingistheElectricalandElectronicsEngineeringfundamentalcoursesdescriptions.BasicElectricalEngineering：resistor,capacitor,inductor;Ohm’slaw;seriesandparallelcircuits;RC,RLandRLCcircuits;singleandthreephasecircuits;transformer,powergenerationanddistribution.AnalogElectronics：diode;bipolarjunctiontransistor:commonbase,commonemitter,commoncollectorconfiguration;field-effecttransistor:commongate,commonsource,commondrainconfiguration;operationalamplifier,differentialandmulti-stageamplifier,poweramplifier;filtersandoscillator;rectification,regulationandDCpowersupplier.DigitalElectronics：combinationallogiccircuit（includinglogicgate,decoder,multiplexer,adder,multiplier,programmablelogicdevice）;sequentiallogiccircuit（includingflip-flop,register,counter,memory）;digital-to-analogandanalog-to-digitalconverter.Text本课件是可编辑的正常PPT课件Lesson3ElectricalandElectronicsEngineeringProgram

电气电子工程专业Ⅰ．TranslatethefollowingsentencesintoChinese.Exercises1．Electricalengineeringisconsideredtodealwiththeproblemsassociatedwithlarge-scaleelectricalsystemssuchaspowertransmissionandmotorcontrol,whereaselectronicengineeringdealswiththestudyofsmall-scaleelectronicsystemsincludingcomputersandintegratedcircuits.2．Electricalengineersareresponsibleforthegeneration,transferandconversionofelectricalpower,whileelectronicengineersareconcernedwiththetransferofinformationusingradiowaves,thedesignofelectroniccircuits,thedesignofcomputersystemsandthedevelopmentofcontrolsystemssuchasaircraftautopilots.3．ElectricalandElectronicsEngineeringProgramCourses:Math,Physics

&

Labs,Intro.Programming,ElectromagneticFields,LogicCircuits

&

Lab,ComputerArchitecture,Circuits&Electronics&Labs,Oral/WrittenCommunications,otherelectives.4．TheInstituteofElectricalandElectronicsEngineers(

IEEE,readI-Triple-E

)istheworld’slargestprofessionalassociationdedicatedtoadvancingtechnologicalinnovation.IEEEstrivestoadvancethetheoryandpracticeofelectrical,electronics,andcomputerengineeringandcomputerscience.本课件是可编辑的正常PPT课件Lesson3ElectricalandElectronicsEngineeringProgram

电气电子工程专业Ⅱ．TranslatethefollowingElectricalandElectronicsEngineeringCoursesintoChinese.ExercisesC-languageProgrammingDesignBasicElectricalEngineeringLowFrequencyElectronicTechnologyHighFrequencyElectronicTechnologyDigitalElectronicTechnologyMicroControllerUnit(

SingleChipProcessor

)PrincipleandApplicationElectronicCircuitCAD(

ComputerAidedDesign

)SensorandMeasurementEquipmentElectricApplianceMaintenancePracticeElectricianCertificateTrainingGraduationProject本课件是可编辑的正常PPT课件1.4 Grammar科技英语英语词汇词义选择科技英语资料的阅读者需要既要精通英语，又要懂得专业知识。由于科技英语词汇的复杂多变，科技英语译者要善于通过词汇的专业语境、词语搭配、句法结构及上下文判定词义。Grammar【例1】Thecomputertookoveranimmenserangeoftasksfromworkersmusclesandbrains.错误的理解是：计算机接替了工人大量的肌肉和大脑。正确的理解是：计算机取代了工人大量的体力劳动和脑力劳动。句中的musclesandbrains原意为“肌肉和大脑”，句中引申为“体力劳动和脑力劳动”。【例2】Ifamouseisinstalledinacomputer,thentheavailablememoryspaceforuserwillreduce.错误的理解是：如果让老鼠在计算机里面筑窝，那么使用者的记忆空间就会减少。正确的理解是：如果计算机安装了鼠标，则用户可利用内存空间就会减少。句中的mouse原意为“老鼠”，在计算机技术中意为“鼠标”；句中的memory原意为“记忆”，在计算机技术中意为“内存”。本课件是可编辑的正常PPT课件1.4 Grammar科技英语英语词汇词义选择Grammar【例3】Inanycaseworkdoesn’tincludetime,butpowerdoes.错误的理解是：在任何情况下，工作不包括时间，但力量包括时间。正确的理解是：在任何情况下，功不包括时间，但功率包括时间。句中的work原意为“工作”，在电子技术中意为“功”；句中的power原意为“力量”，在电子技术中意为“功率”。【例4】Atransistorhasthreeelectrodes,theemitter,thebase,andthecollector.错误的理解是：晶体管有三个电极，即发射器、基地、收集器。正确的理解是：晶体管有三个电极，即发射极、基极、集电极。句中的emitter原意为“发射器”，在电子技术中意为“发射极”；句中的base原意为“基地”，在电子技术中意为“基极”；句中的collector原意为“收集器”，在电子技术中意为“集电极”。【例5】Likechargesrepeleachotherwhileoppositechargesattract.错误的理解是：喜欢的费用相互排斥，而对立的费用相互吸引。正确的理解是：同种电荷相互排斥，而异种电荷相互吸引。charge原意有“费用、掌管、电荷、装载、索价、充电、控告”，在电子技术中意为“电荷”。本课件是可编辑的正常PPT课件EvaluationofLearningEffect学习效果自我评价EvaluationContents（内容）Master（掌握）AlmostMaster（基本掌握）Incapable（未掌握）NewWordsandTechnicalTerms(单词专业术语)Text(课文）Grammar（语法）Exercises（练习）本课件是可编辑的正常PPT课件感谢观看ThanksforWatching本课件是可编辑的正常PPT课件电子信息专业英语本课件是可编辑的正常PPT课件Chapter2ElectronicParts电子器件

教学目标2.1★电子元件：掌握电阻、电容、电感、变压器、二极管、三极管、集成电路的基本知识。★通过电子元件、集成块数据表、微控制器三篇文章学习电子器件。2.2★集成块数据表：掌握集成块数据表的结构，看懂数据表，从中找出需要的参数。2.3★微控制器：掌握微控制器种类、结构、管脚、功能、参数、使用方法、外围电路。本课件是可编辑的正常PPT课件

2.1

Lesson4ElectronicComponent

电子元件NewWordsTechnicalTerms技术词汇resistorn.电阻（器）terminaln.末端；终点adj.末端的electriccurrentn.电流proportionaladj.比例的，成比例的representvt.表示；表现；代表unitn.单位；单元；部件symboln.符号；象征；标志resistancen.阻力；电阻colorband色带，色环numericaladj.数字的；数值的specifyvt.指定；规定multipliern.乘数；乘法器tolerancen.公差；容忍；宽容gapn.缺口；间隙violetadj.紫色的；n.紫罗兰goldn.金，黄金；金色；adj.金的signifyvt.表示；意味；预示TechnicalTerms技术词汇lievi.说谎；位于；躺；展现capacitorn.电容（器）consistvi.组成conductorn.导体；售票员；管理人separatedadj.分开的dielectricn.电介质chargen.电荷；费用v.充电；控告electricalfieldn.电场blockvt.阻塞；阻止n.块；障碍directcurrent直流电（流）alternatingcurrentn交流电（流）filtern.滤波器；过滤器；v.过滤smoothadj.光滑的；vt.使平滑resonantadj.共振的；谐振的tunev.调谐；调音frequencyn.频率；频繁faradn.法拉（电容单位）本课件是可编辑的正常PPT课件

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Lesson4ElectronicComponent

电子元件NewWordsTechnicalTerms技术词汇capacitancen.电容现象；电容量inductorn.感应器magneticfieldn.磁场typicallyadv.代表性地coiln.线圈loopn.环；回路；循环Henryn.亨利inductancen.感应现象；电感量transformern.[电]变压器；变形金刚convertv.转变；变换windingn.卷绕的线圈adj.卷绕的primarywindingn.初级线圈secondarywindingn.次级线圈semiconductorn.半导体PNjunctionn.PN结forwarddirectionn.正向reversedirectionn.反向TechnicalTerms技术词汇switchn.开关；v.转换bipolaradj.有两极的，双极的junctionn.连接，接合；交叉点labelvt.标注；贴标签；n.标签basen.底部；基础；基极collectorn.征收者；集电极emittern.发射器；发射极gaten.[电子]闸极sourcen.[电子]源极drainn.[电子]漏极siliconn.硅chipn.碎片；芯片wafern.薄圆片，晶片fabricatevt.制造；装配functionn.功能；函数v.运行microprocessorn.微处理器本课件是可编辑的正常PPT课件

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Lesson4ElectronicComponent

电子元件1．ResistorAresistorisatwo-terminalelectroniccomponentthatresiststheflowofelectricalcurrent

(Fig.2-1)

.Thecurrentflowingthrougharesistorisdirectlyproportionalto[2]thevoltageacrosstheresistor’sterminals.Thisrelationisrepresentedwithawell-knownOhm’slaw:V=I×R[3].Theohm

(symbol:Ω)

istheunitofelectricalresistance.Colorbandsareusuallyusedtorepresenttheresistancevalue

(Fig.2-2)

.Thefirstandsecondbandrepresentthenumericalvalueoftheresistor,thethirdbandspecifythepower-of-tenmultiplier,andthefourthbandifpresent,indicatestoleranceofvalueinpercent.Thecolorbandsarealwaysreadfromlefttoright,andthereisagapbetweenthethirdandthefourthbandstodistinguishleftfromright.Forexample,aresistorwithbandsofyellow,violet,red,andgoldwillhavefirstdigit4

(yellow)

,seconddigit7

(violet)

,followedby2

(red)

zeros:4,700ohms.Goldsignifiesthatthetoleranceis±5%,sotherealresistancecouldlieanywherebetween4,465and4,935ohms.2．CapacitorAcapacitorisanelectroniccomponentconsistingofapairofconductorsseparatedbyadielectric

(2-3)

.Text本课件是可编辑的正常PPT课件

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Lesson4ElectronicComponent

电子元件Acapacitorcanstoreelectricalchargeinanelectricalfield.Capacitorsarewidelyusedinelectroniccircuitsforblockingdirectcurrentwhileallowingalternatingcurrenttopass,infilternetworksforsmoothingtheoutputofpowersupplies,intheresonantcircuitsfortuningradiostoparticularfrequenciesandformanyotherpurposes.Thefarad

(symbol:F)

istheunitofcapacitance.Valuesofcapacitanceareusuallyspecifiedinrangesofmicrofarads

(

μF10-6

)

,nanofarads

(nF10-9)

,orpicofarads

(

pF10-12

)

(Fig.2-4)

.3．InductorAninductorisanelectroniccomponentthatcanstoreenergyinamagneticfieldcreatedbytheelectriccurrentpassingthroughit

(Fig.2-5)

.Typicallyaninductorisaconductingwireshapedasacoil,theloopshelpingtocreateastrongmagneticfield.InductorscanbeusedtoblockACsignalsfrompassingthroughacircuit.TheHenry

(symbol:H)

istheunitofinductance.4．TransformerAtransformerisanelectricalcomponentthatconvertsACelectricityfromonevoltagetoanotherwithText本课件是可编辑的正常PPT课件

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Lesson4ElectronicComponent

电子元件littlelossofpower.Theinputcoiliscalledtheprimarywindingandtheoutputcoiliscalledthesecondarywinding.Thereisnoelectricalconnectionbetweenthetwocoils,insteadtheyarelinkedbyanalternatingmagneticfieldcreatedinthecoreofthetransformer

(Fig.2-6)

.5．DiodeAdiodeisatwo-terminalsemiconductordevicethatconsistsofaPNjunctionmadeofsemiconductormaterial(Fig.2-7)

.Themostcommonfunctionofadiodeistoallowanelectriccurrenttopassinonedirection

(calledthediode’sforwarddirection)

,whileblockingcurrentintheoppositedirection

(thereversedirection)

(Fig.2-8)

.6．TransistorAtransistor

(Fig.2-9)

isasemiconductordeviceusedtoamplifyelectronicsignals.Thetransistoramplifiescurrent,andtheamountofcurrentamplificationiscalledthecurrentgain.Inmanycircuitsaresistorisusedtoconvertthechangingcurrenttoachangingvoltage,sothetransistorisbeingusedtoamplifyvoltage.Therearetwotypesoftransistors.Abipolarjunctiontransistor

(

BJT

)

hasterminalslabeledbase,collector,andemitter.Asmallcurrentatthebaseterminal

(

thatis,flowingfromthebasetoText本课件是可编辑的正常PPT课件

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Lesson4ElectronicComponent

电子元件theemitter)

cancontrolorswitchamuchlargercurrentbetweenthecollectorandemitterterminals.Forafield-effecttransistor

(FET)

,theterminalsarelabeledgate,source,anddrain,andavoltageatthegatecancontrolacurrentbetweensourceanddrain

(Fig.2-10)

.7．IntegratedCircuitAnintegratedcircuit

(IC)

,sometimescalledasiliconchiporchip,isasemiconductorwaferonwhichthousandsormillionsoftinyresistors,capacitors,andtransistorsarefabricated(Fig.2-11)

.AnICcanfunctionasanamplifier,oscillator,timer,counter,computermemory,ormicroprocessor.Text本课件是可编辑的正常PPT课件

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Lesson4ElectronicComponent

电子元件Figures

Figure2-1VariousresistorsFigure2-2ResistorColorCode本课件是可编辑的正常PPT课件

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Lesson4ElectronicComponent