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242005RESEARCHANDEXPLORATIONINLABORATORYVol.24Sup.20051,2,1(1.,210094;2.,210094):,,,,,PspiceMatlab,,:;:G642.423:B:100627167(2005)Z20145203TeachingMethodofOpAmpsinCircuitTheorySHATao,WANGQin2you,HANGJian2jun(AutomaticdepartmentNUST,Nanjing,210094,China)Abstract:OpAmpsareimportantdevices.Theyarewidelyusedincircuitdesign.OpAmpsisanimportantteachingmaterialincircuittheoremforalongtime.Basedonexperience,onemethodaboutthevoltagefeedbackandthecurrentfeedbackOpAmpsareintroduced.ThemethodbasingonOpAmpsconceptsandusingPspiceandMatlabtoanalyze,canmaketeachingprogressmoreclearlyandmoreaccurately.Keywords:operationalamplifier;circuitteaching:2005205209:(1968-),,,,,,,Tel:84303086,,uA741,(VF),(CF),,,,,,11()(a)VF,(b)CF,(ab)o-+11.1VFabuaub,uo,uoud=ub-ua,Ri,,Ro,A,RiA,Ro,22VF:Ri,,,();A,,ud,,()()(),1.2CFCFVF,CF,(2)ab,abuo=Ztid,ZtZt,THS3001,8.5M,idVF,CFub=ua,id=0,3CF2CF4(a)(b)VFCF4(b)id=uaR1-uo-uaR2;ub=uaid=ubR1-uo-ubR2=ub(1R1+1R2)-uoR2(1)uo=Ztidid=uoZt(2)(1)(2)uoub=1+R2R111+R2Zt=1b11+R2Zt(3)b=R1R1+R2,ZtR2,T5b,cuc55:id=-ucR2;uo=Ztid=-ZtucR2T=-uouc=ZtR2(3),,ZtR2Zt,uoub=1+R2R1,3,,,,Pspice,6CFTHS3001()6uA741,VFuA741,Matlab,PspicePspiceMatlab70.1HZ1GHz61uA741,2THS3001(195)64124,,,:[1].[J].,2004,(6):1152117.[2].[J].,2004,23(12):1632164.[3].[J].,2003,22(4):10212.[4].[J].(),2004,6(6):93294.(146)67uA7413.99983e+000,6.45654e+005THS30013.99757e+000,2.39883e+008,4,,4CF,VFCF,,CF,PspiceMatlab,,,,:[1].400[M].:,2004.[2],.[M].:,2003.[3]OrcadCaptureUsersGuide.CadenceDesignSystems,Inc..[4]PSpiceUsersGuide.CadenceDesignSystems,Inc.[5]TheodoreF.Bogart.ElectronicDevicesandCircuits.USA:Prentice2Hall.2001.(150)(1),,,(2),,,,,21,,:[1].[J].,2001(2):59260.[2],.[J].,2001(6):43244.[3],,.[J].,1999(5):13214.[4].[J].,2002(12):29.591,: