Lesson 08 Op-amp Applications电子技术专业英语教程

Unit3OperationalAmplifierLesson8Op-ampApplications《电子技术专业英语教程》冯新宇主编电子工业出版社《电子技术专业英语教程》2Lesson8Op-ampApplications•Backgrounds•Texttour•Languageinuse–Vocabulary–Structure–Reading/writingtechniques2020/2/3《电子技术专业英语教程》3•Terminology–feedbackresistor反馈电阻–high-passfilter高阶滤波器–virtualground虚地–activefilter有源滤波器–switchingcircuit开关电路Backgrounds2020/2/3《电子技术专业英语教程》4Terminology2020/2/3《电子技术专业英语教程》5–high-passfilter高阶滤波器–activefilter有源滤波器Filter2020/2/3《电子技术专业英语教程》6–automationswitchingcircuit–自动切换电路–channelswitchingcircuit–通道切换电路–voltageswitchingcircuit–电压切换回路Switchingcircuit开关电路;转换电路;切换电路;切换回路2020/2/3《电子技术专业英语教程》7•Outline–Overview–Invertingamplifier–Summingamplifier–Differentiationamplifier–IntegratoramplifierTexttour2020/2/3《电子技术专业英语教程》8•AsignalisappliedthroughinputresistorR1,andnegativecurrentfeedbackisimplementedthroughfeedbackresistorRF.OutputVohaspolarityoppositethatofinputVs.Invertingamplifier+-us+-udu0i1+-iinR1RFiF+-2020/2/3《电子技术专业英语教程》9Summingamplifier+-vs2v0R2RFvs3R3vs1R1123123123()SSsooooFvvvvvvvRRRR2020/2/3《电子技术专业英语教程》10Differentiationamplifier+-vs2v0CRFiFis0sFsdvvIRiRRCdt2020/2/3《电子技术专业英语教程》11Integratoramplifier+-vsv0CRiFis011ssvidtvdtCRC2020/2/3《电子技术专业英语教程》12Languageinuse•Vocabulary–originally,predictable,miniaturize–feedback,superposition•Structure•Reading/writingtechniques2020/2/3《电子技术专业英语教程》13Vocabulary2020/2/3《电子技术专业英语教程》14Originallyindictionary•Withreferencetoorigin原本地：与起源有关地•Atfirst:开始•Inahighlydistinctivemanner特殊地：以一种特别与众不同的方式2020/2/3《电子技术专业英语教程》15Originallyintext•Theoperationalamplifierwasoriginallygiventoanamplifierthatcouldbeeasilymodifiedbyexternalcircuitrytoperformmathematicaloperations,suchasconstantgainmultipliers,summing,substation,integration,anddifferentiation.•早期的集成运算放大器主要用来完成乘、加、除、积分和微分等数学运算。2020/2/3《电子技术专业英语教程》16Predictableindictionary可预言的MiniaturizeindictionaryToplanormakeonagreatlyreducedscale.使微型化：计划或使尺寸极大地缩小2020/2/3《电子技术专业英语教程》17Predictable,Miniaturizeintext•Withtheadventofsolid-statetechnology,op-ampshavebecomehighlyreliable,miniaturized,temperature-stabilized,andconsistentlypredictableinperformance.•随着固态技术的发展，运算放大器具有高可靠性、微型化，高温度稳定性等特点。2020/2/3《电子技术专业英语教程》18Predictableinuse•predictablesize可预测尺度•predictablenorms可预见性规则•predictablemethod预测方法2020/2/3《电子技术专业英语教程》19Feedbackindictionary•Thereturnofaportionoftheoutputofaprocessorsystemtotheinput,especiallywhenusedtomaintainperformanceortocontrolasystemorprocess.反馈：一个过程或系统的一部分由输出向输入的返回，尤指用来维持运转或控制一个系统或过程•Theportionoftheoutputsoreturned.如此反馈输出的部分•Thereturnofinformationabouttheresultofaprocessoractivity;anevaluativeresponse:回复，反馈：处理结果或活动信息的反馈；一种有评估性的反馈2020/2/3《电子技术专业英语教程》20Feedbackintext•negativecurrentfeedbackisimplementedthroughfeedbackresistorRF.•电流负反馈通过反馈电阻RF实现。2020/2/3《电子技术专业英语教程》21Feedbackinuse•resultfeedback结果反馈•ionfeedback离子反馈•impulsefeedback脉冲反馈•instructionalfeedback教学反馈2020/2/3《电子技术专业英语教程》22Superpositionindictionary•Theactofsuperposingorthestateofbeingsuperposed:•迭加：重叠的状态或动作2020/2/3《电子技术专业英语教程》23Superpositionintext•Weusetheprincipleofsuperposition.With,thecurrentinR1isnotaffectedbythepresenceofR2andR3,sincetheinvertingnodeisavirtualground.•根据叠加原理,，R1的电流不受R2和R3的影响,因为输入的节点虚地。2020/2/3《电子技术专业英语教程》24Structure2020/2/3《电子技术专业英语教程》25Reading/Writingtechniques