Lesson-03-Resistor-Capacitor-Inductor电子技术专业英语教程省公开

Lesson3ResistorCapacitorInductor《电子技术专业英语教程》冯新宇主编电子工业出版社

Unit2

Semiconductordevice4/13/20241《电子技术专业英语教程》第1页Lesson3ResistorCapacitorInductor

BackgroundsTexttour

LanguageinuseVocabularyStructureReading/writingtechniques4/13/20242《电子技术专业英语教程》第2页TerminologyResistorCapacitorInductorFour-bandresistorsInductanceformulaeBackgrounds4/13/20243《电子技术专业英语教程》第3页Terminology

4/13/20244《电子技术专业英语教程》第4页电阻能够被认为对电流含有一个妨碍作用，电阻越高所流过电流越低

。ResistorResistancemaybethoughtofasanoppositiontocurrentflow;thehighertheresistancethelowerthecurrentthatwillflow.4/13/20245《电子技术专业英语教程》第5页Theresistanceofanelectricalconductordependson4factors,thesebeing:(a)Thelengthoftheconductor.Resistance,R,isdirectlyproportionaltolength,l,ofaconductor,i.e.R∝l.(b)Thecross-sectionalareaoftheconductor.Resistance,R,isinverselyproportionaltocross-sectionalarea,a,ofaconductor,i.e.R∝1/a.(c)Thetypeofmaterial.(d)Thetemperatureofthematerial.

Resistor4/13/20246《电子技术专业英语教程》第6页Resistor导体电阻依赖以下四个原因：（a）导体长度。电阻R正比于导体长度l，即R∝l（b）导体横截面积。电阻R反比于导体横截面积a，即R∝1/a（c）材料类型（d）材料温度。4/13/20247《电子技术专业英语教程》第7页Themaintypesofthecapacitorinclude:variableair,mica,paper,ceramic,plastic,titaniumoxideandelectrolytic.电容主要类型包含：可变间隙电容，云母电容，纸电容，陶瓷电容，塑料电容，二氧化钛电容以及电解质电容。Capacitor

4/13/20248《电子技术专业英语教程》第8页Aniron-coredinductorisoftencalledachokesince,whenusedina.c.circuits,ithasahokingeffect,limitingthecurrentflowingthroughit.一个有铁芯电感器我们通常把它称之为扼流圈，这主要是因为在交流电路中它含有阻塞效应，能够限制流过它电流。Inductor

4/13/20249《电子技术专业英语教程》第9页Four-bandresistors

Four-bandidentificationisthemostcommonlyusedcolor-codingschemeonresistors.Itconsistsoffourcoloredbandsthatarepaintedaroundthebodyoftheresistor.Thefirsttwobandsencodethefirsttwosignificantdigitsoftheresistancevalue,thethirdisapower-of-tenmultiplierornumber-of-zeroes,andthefourthisthetoleranceaccuracy,oracceptableerror,ofthevalue.Thefirstthreebandsareequallyspacedalongtheresistor;thespacingtothefourthbandiswider.Sometimesafifthbandidentifiesthethermalcoefficient,butthismustbedistinguishedfromthetrue5-colorsystem,with3significantdigits.4/13/202410《电子技术专业英语教程》第10页4/13/202411《电子技术专业英语教程》第11页Forexample,green-blue-yellow-redis56×104

Ω=560

kΩ

±

2%.Aneasierdescriptioncanbeasfollowed:thefirstband,green,hasavalueof5andthesecondband,blue,hasavalueof6,andiscountedas56.Thethirdband,yellow,hasavalueof104,whichaddsfour0'stotheend,creating560,000Ωat±2%toleranceaccuracy.560,000Ωchangesto560kΩ±2%(asakilo-is103).4/13/202412《电子技术专业英语教程》第12页Inductanceformulae

Thetablebelowlistssomecommonformulaeforcalculatingthetheoreticalinductanceofseveralinductorconstructions

4/13/202413《电子技术专业英语教程》第13页ConstructionFormulaDimensionsCylindricalcoilL=inductanceinhenries(H)μ0=permeabilityoffreespace=4π×10-7H/mK=Nagaokacoefficient[2]

N=numberofturnsA=areaofcross-sectionofthecoilinsquaremetres(m2)l=lengthofcoilinmetres(m)StraightwireconductorL=inductance(H)l=lengthofconductor(m)d=diameterofconductor(m)L=inductance(nH)l=lengthofconductor(in)d=diameterofconductor(in)4/13/202414《电子技术专业英语教程》第14页ConstructionFormulaDimensionsShortair-corecylindricalcoilL=inductance(µH)r=outerradiusofcoil(in)l=lengthofcoil(in)N=numberofturnsMultilayerair-corecoilL=inductance(µH)r=meanradiusofcoil(in)l=physicallengthofcoilwinding(in)N=numberofturnsd=depthofcoil(outerradiusminusinnerradius)(in)4/13/202415《电子技术专业英语教程》第15页ConstructionFormulaDimensionsFlatspiralair-corecoilL=inductance(H)r=meanradiusofcoil(m)N=numberofturnsd=depthofcoil(outerradiusminusinnerradius)(m)L=inductance(µH)r=meanradiusofcoil(in)N=numberofturnsd=depthofcoil(outerradiusminusinnerradius)(in)Toroidalcore(circularcross-section)L=inductance(H)μ0=permeabilityoffreespace=4π×10-7H/mμr=relativepermeabilityofcorematerialN=numberofturnsr=radiusofcoilwinding(m)D=overalldiameteroftoroid(m)4/13/202416《电子技术专业英语教程》第16页Outlinebriefintroduction(para.1)Resistor(para.2,3,4,5,6)Capacitor(para.7,8,9,10,11,12,13)Inductor(para.14,15,16)Texttour4/13/202417《电子技术专业英语教程》第17页Ameansofcontrollingthecurrentsandvoltagespresentinelectroniccircuits.Anoppositiontocurrentflow

Resistor4/13/202418《电子技术专业英语教程》第18页AdeviceforstoringelectricchargedepositeandextractechargeCapacitor4/13/202419《电子技术专业英语教程》第19页coilofwireAniron-coredinductorisoftencalledachoke

Inductor4/13/202420《电子技术专业英语教程》第20页Vocabulary

component，coil，amplifierStructureLanguageinuse4/13/202421《电子技术专业英语教程》第21页Vocabulary4/13/202422《电子技术专业英语教程》第22页aconstituentpartoraspectofsomethingmorecomplex. 组成；成份anyelectricaldevice. 元件formingorfunctioningasapartoraspect;constituent. 成份，分量

componentindictionary

4/13/202423《电子技术专业英语教程》第23页componentintextThissectionintroducesseveralofthemostcommontypesofelectroniccomponent,includingresistors,capacitorsandinductors.本节介绍几个最惯用电子元件类型，包含电阻、电容和电感。

Theseareoftenreferredtoaspassivecomponentsastheycannot,bythemselves,generatevoltageorcurrent.它们经常被看作是无源元件，因为它们本身不能产生电压或电流。4/13/202424《电子技术专业英语教程》第24页componentindex成份指数

reactivecomponent无功分量activecomponent有功分量

componentinuse

4/13/202425《电子技术专业英语教程》第25页towindorgather(ropes,hair,etc)intoloopsor(ofrope,hair,etc)tobeformedinsuchloops. 将…卷[盘]成圈或螺旋形asingleloopofsuchaseries线圈anarrangementofpipesinaspiralorloop,asinacondenser旋管

coilindictionary

4/13/202426《电子技术专业英语教程》第26页coilintextThebasicformofaninductorissimplyacoilofwire..电感基本形式是简单一匝线圈。4/13/202427《电子技术专业英语教程》第27页currentthroughprimarycoilinducescurrentinsecondarycoil.

经过原线圈在次级线圈中产生电流。

coilspring弹簧coolingcoil冷却盘管primarycoil一次线圈

coilinuse

4/13/202428《电子技术专业英语教程》第28页anelectronicdeviceusedtoincreasethestrengthofthesignalfedintoit放大器

suchadeviceusedfortheamplificationofaudiofrequencysignalsinaradio,etc扩音器apersonorthingthatamplifies扩大人(物)

amplifierindictionary

4/13/202429《电子技术专业英语教程》第29页Anunderstandingofthecharacteristicsandapplicationofpassivecomponentsisanessentialprerequisitetounderstandingtheoperationofthecircuitsusedinamplifiers,oscillators,filtersandpowersupplies.了解无源元件特征和应用是了解放大器、振荡器、滤波器和电源工作原理首要条件。amplifierintext4/13/202430《电子技术专业英语教程》第30页poweramplifier功率放大器

differentialamplifier差动放大器operationalamplifier运算放大器magneticamplifier磁放大器amplifierinuse4/13/202