模擬仿真實(shí)驗(yàn)

1、有RE1R有RE1RlUi/mVUo/mVAu相位關(guān)系oo1.41419.57713.845反相無RE1RlUi/mVUo/mVAu相位關(guān)系oo1.414133.30294.273反相理論計(jì)算:無RE1時：電路等效于右圖這種情況實(shí)驗(yàn)19Multisim模擬電路仿真實(shí)驗(yàn)精33李銳2013010669一、實(shí)驗(yàn)?zāi)康?學(xué)習(xí)用Multisim實(shí)現(xiàn)電路仿真分析的主要步驟；2.用Multisim的仿真手段對電路性能做較深入的研究。二、實(shí)驗(yàn)內(nèi)容【說明：由于截圖及數(shù)據(jù)表格過多，報告中設(shè)有超鏈接，便于直接在數(shù)據(jù)分析及圖像波形間轉(zhuǎn)換】【實(shí)驗(yàn)19-1基本單管放大電路的仿真研究】一、實(shí)驗(yàn)操作過程及相關(guān)圖像二實(shí)驗(yàn)數(shù)據(jù)整理

2、及分析實(shí)驗(yàn)數(shù)據(jù)整理及分析（1）直流工作點(diǎn)分析Vc/VVb/VVe/VUce/VIE/mArbe/Qib/MaIc/MA8.74591.81811.20007.54591.0000188613.901986.11理論計(jì)算：Ve=1.2V，貝IIE=VE/(RE1+RE2)=1.2/(0.2+1)=1mArbe=300+(1+60)*26/IE/mA=300+61*26/1=1886QIB=IE/(60+1)=16.393卩AIC=IE*60/(60+1)=983.61卩AVc=VCC-ZC*RC=VCC-(60/(1+60)*IE*RC=12-60*1*3.3/61=8.7541VVb=15*V

3、CC/(15+20+100*55.36%)=1.9920VUce=Vc-Ve=8.7541-1.2=7.5541V誤差分析：Uce：(7.5459-7.5541)*100%/7.5541=0.11%Vc：(8.7459-8.7541)*100%/8.7541=-0.09%IB：(13.901-16.393)*100%/16.393=-15.20%IC：(986.11-983.61)*100%/983.61=0.25%(2)示波器觀測結(jié)果(有RE1與無RE1則則bc-(60*3.3)/1.886=104.98有RE1時：電路等效于右圖這種情況+E1有RE1時：電路等效于右圖這種情況+E1O.lk

4、Q心22.4RQlooknUG+HH+rOc15VG2二-卩&二(空勘尸+H+RR則-60*3.3/(1.886+61*0.2)=14.057誤差分析Au：有RE1:(13.845-14.057)*100%/14.057=-1.51%無RE1:(94.273-104.98)*100%/104.98=-10.2%有RE1fH/HzfJHz帶寬/HzAu18.12M17.68918.11598M13.8447無RE1fH/HzfJHz帶寬/HzAu18.95M105.34618.94889M94.833（4）“交流i分析”觀測纟fH/HzfL/Hz帶寬/HzAu17.9553M17.852017.

5、95528M13.8446（5）失真分析結(jié)果在失真分析的過程中發(fā)現(xiàn)，信號源幅度很?。?mV）時，失真度便不為零，逐漸加大信號源幅度，明顯開始出現(xiàn)失真是在150mV時，失真度為4.010%。（6）測Ro,Ri有RE1Uo0/mVUoL/mVRL/QRo/QUi/yVIi/nARi/Q13.8423.2841.0k3.215k999.999140.1537135.1無RE1Ui/yVIi/nARi/Q999.999533.4491874.6（7）RE1的存在對電壓放大倍數(shù)、上下限截止頻率及輸入電阻的影響AufH/HzfL/Hz帶寬/HzRi/Q有RE113.84518.12M17.68918.11

6、6M7135.1無RE194.27318.95M105.34618.949M1874.6增加RE1后減小減小減小減小增加根據(jù)上表，可以得出結(jié)論：增加RE1后，輸入電阻增加，電壓放大倍數(shù)減小，上下限截止頻率減小，帶寬減小?！緦?shí)驗(yàn)19-2有源濾波器仿真】一、實(shí)驗(yàn)操作過程及相關(guān)圖像二、實(shí)驗(yàn)數(shù)據(jù)整理及分析實(shí)驗(yàn)數(shù)據(jù)整理及分析1）低通濾波器波特圖法Au(10A-3)999.924截止頻率/Hz102.3交流分析法Au(10A-3)999.9002截止頻率/Hz101.994理論計(jì)算：由節(jié)點(diǎn)電位法：V2(1/R+l/R+jwc)=Ui/R+Uo/R+jwcUo(1)Uo=(l/jwc)*V2/(R+l/jw

7、c)(2)由此得：Uo/Ui=1/(1+jwcR)人2即：Uo/Ui=1/Vl-(wcR廠2廠2+(2wcR廠2令Uo/Ui=l/V2得：w=643.59rad/s，故f0=w/(2*n)=102.4HzCC通帶電壓放大倍數(shù)：Au=1誤差分析：波特圖法：Au：(0.999924-1)*100%/1=-0.0076%,fO：(102.3-102.4)/102.4=-0.098%交流分析法：Au：(0.9999-1)*100%/1=-0.01%,f0：(101.994-102.4)/102.4=-0.396%2)高通濾波器對比高通濾波器與低通濾波器的電路圖可以發(fā)現(xiàn)，區(qū)別就是R與C位置互換，因而將低

8、通濾波器Uo/Ui中的jwc換為1/R,將R換為1/(jwc)，從而Uo/Ui=(jwcR)A2/(1+jwcR)A2,即：Uo/Ui=(wcR)人2/Vl-(wcR廠2廠2+(2wcR廠2,令Uo/Ui=1/V-2得：wC=1553.774rad/s，故f0=wC/(2*n)=247.291Hz波特圖法Au(10A-3)999.563截止頻率/Hz247.16交流分析法Au(10A-3)999.4402截止頻率/Hz247.66誤差分析：波特圖法：Au：(0.999563-1)*100%/1=-0.0044%，f0:(247.16-247.29)/247.29=-0.053%交流分析法：Au

9、：(0.9994402-1)*100%/1=-0.056%,f0：(247.66-247.29)/247.29=-0.15%3)雙T帶阻濾波器參數(shù)：R/kQC/pFUi1Vpk運(yùn)放型號7418003000100HzVCC12VVEE-12V中心頻率f0=1/(2nRC)，令R=800kQ，則C=1/(2nf(R),范圍為(1989pF,4974pF),因而可取C=3000pF,f0=1/(2nRC)=66.315Hz波特圖法f0/Hzf1/Hzf2/Hz帶寬/Hzf0處幅度(10A-3)66.06915.669280.149264.481.851交流分f0/Hzf1/Hzf2/Hz帶寬/Hzf

10、0處幅度(10A-3)析法66.48415.619283.000267.38133.3335理論計(jì)算：此雙T濾波器的轉(zhuǎn)移函數(shù)為：N(jw)=Uo/Ui=1/2*(R+l/jwC)/2*R(l+jwC)/(l/(wRC)人2)+j4wRC=1-(wRCF2/1-(wRC)人2+j4wRC幅頻特性函數(shù)：|N(jw)|=1-(wRC)A2/1-(wRC)A2A2+(4wRC)A2A(1/2)令|N(jw)|=1/“2得，wl=1765.028rad/s,fl=280.913Hz；w2=98.362rad/s,f2=15.655Hz誤差分析：波特圖法：f1：(280.149-280.913)*100%

11、/280.913=-0.272%,f2：(15.669-15.655)/15.655=0.089%,f0：(66.069-66.315)*100%/66.315=-0.371%交流分析法：f1：(283-280.913)*100%/280.913=0.743%,f2：(15.619-15.655)/15.655=-0.23%,f0：(66.484-66.315)*100%/66.315=0.255%【實(shí)驗(yàn)19-3正眩波振蕩器仿真】一、實(shí)驗(yàn)操作過程及相關(guān)圖像二、實(shí)驗(yàn)數(shù)據(jù)整理及分析實(shí)驗(yàn)數(shù)據(jù)整理及分析(1)由波特圖得：f0=1kHz,Uo/Ui=0.333331251；由示波器得：在f0處相位差為0

12、.(2)調(diào)節(jié)R3,當(dāng)R3去99.73%時，文氏橋正弦波發(fā)生器起振；可以看出，由起振到穩(wěn)定，輸出波形的幅度先逐漸增大后趨于穩(wěn)定，且起振時較慢，起振之后幅度增加的速度加快(波形圖)：則R3=9.973kQ時的最大幅度：U=1.406V,T/2=500.000卩s,f=1/T=1kHzR3=5.56kQ時：開始出現(xiàn)飽和失真實(shí)驗(yàn)19-1實(shí)驗(yàn)操作過程及相關(guān)圖像實(shí)驗(yàn)電路圖(其中信號源為1mV(有效值)，1000Hz)(1)調(diào)節(jié)R6(RW)，使Ve=1.2V：設(shè)置Ve(2)靜態(tài)工作點(diǎn)分析用“直流工作點(diǎn)分析”功能進(jìn)行直流工作點(diǎn)分析，測量靜態(tài)工作點(diǎn)，并與估算值比較:1：-1：-55.36%-2rCH”2H222

13、2A*3R4：設(shè)IDCOpereDCOperatingPoint1V(3)1.200002qqlDe-1.00002m3qqifc986.11492u斗qqlDb13.90138u5qq：lDs0.000002W8.745877V(2)1.818123X奄唱|曲目過畫少.*人|DCOperatingPoint|DCOperatingPointDCOperatingPoint|DCCVc/VVb/VVe/VUce/VIE/mArbe/Q8.74591.81811.20007.54591.00001886(3)動態(tài)分析用示波器觀測輸入、輸出電壓波形的幅度和相位關(guān)系，并測量電壓放大倍數(shù)，與估算值比較

14、RlUi/mVUo/mVAu相位關(guān)系OO1.41419.57713.845反相相位(藍(lán)線輸入Ui,紅線輸出Uo)XSC1XSC1.XBP1（4）幅頻特性和相頻特性分析（波特圖儀法）幅頻特性曲線fH/HzfL/Hz帶寬/HzAu18.116M17.68918.11598M13.8447相頻特性曲線BodePlotter-XBPlI1ModeM&gnitudePhaseHorizontalLog|Lin|Vertical|LogLinF200ControlsReversekHzF200|jHz-240SaveSet.Deg-179.986Deg-2-1012.057THZQ.015DegBodeP

15、lotter-XBPlITOI13.866kHzVerticalLogLin200DegModeMagnitudePhaseHorizontalLog|Lin|F20THzControls44PhaseDegControls35.193kH2179.898DegBodeIPlotter-XBPIModeMagnitudeHorizontalLog|LiriVerticalF20THz200kHz-20Deg（5）幅頻特性和相頻特性分析（交流分析法）15.00uioO7.500.0010.00m1.00100.0010.00k1.00M100.00M10.00G15.00uioO7.500.00

16、10.00m1.00100.0010.00k1.00M100.00M10.00G1.00T1000.00T1.00H621.00110.004-401.001.001W.OOm1000010.00k1.00M100.00M10.00G1.00T1000.00T任o515.-2.orrl28.0m280.0m2.810.046.0280.02.8k100.0k1.0M6.4M46.0M460.0M4.6G100.0GFrequency(Hz)v(5)任o515.-2.orrl28.0m280.0m2.810.046.0280.02.8k100.0k1.0M6.4M46.0M460.0M4.6G1

17、00.0GFrequency(Hz)v(5)ut血0-002-2(bdp)(Dsplldom28.0m2800m2.810046.0280.02.8kA.1000k1.0M64M46.0M460.0M46G100.0GFrequency(Hz)BodePlotter-XBP1Oscilloscope-XSC11ACAnalysis|ACAnalysisACAnalysisACAnalysis|ACAnalysis|ACAnalysisACAnab*設(shè)計(jì)1ACAnalysisAAAFrequency(Hz)V(5)BodePlotter-XBPl|Oscilloscope-XSC11BodePl

18、otter-XBP1Oscilloscope-XSC11BodePlotter-XBP11Oscilloscope-XSC1BodePlotter-XBPl|Oscilloscope-XSC11BodePlotter-XBP1Oscilloscope-XSC11BodePlotter-XBP11Oscilloscope-XSC1ACDpnlub曇w251=i，105.0m820.0m4.610.0200o-2000色心壘d-A-設(shè)計(jì)1ACAnalysis&吐Ar4.O460.0W.OkFrequency(Hz)V(3)I廿1.04.628.082.0280.0LOk4.6kxlyix22dxd

19、yBodePlotter-XBPl50mV80mV90mV100mVDistortionanalyzer-XDAlSBSBTime28.248ms27.752msI-496.575us120mVChannel_AChannel_B0.000V1.964V0.000SBSBTime28.248ms27.752msI-496.575us120mVChannel_AChannel_B0.000V1.964V0.000V1.887V0.000V3.851VTotalharmonicdistortion(THD)2.648%Fundamentalfreq.1kHz|Start|Resolutionfre

20、q.11B0Hz,100HzHlOscilloscope-XSC1Ml4saT2ST2riTime113.748ms113.243ms-505.137usChannel_A0.00070.000V0.000VChannel_B2.227V-2.351V4.578V150mVS&S&Time153.750ms154.252ms502.247usChannel_A0.000V0.000V0.000VChannel_B2.683V-2.918V-5.602V180mV(7)測量輸入、輸出電阻測RiVCCUi/yVIi/nARi/Q999.999140.1537135.1測RoXBfLIQMultim

21、eter-XMMl1EBES3.284mVMultimeter-XMMlUoO/mVUoL/mVRL/QRo/Q13.8423.2841.0k3.215k測Ri(8)去掉R4,使R5=1.2kQ，重新測量上述內(nèi)容:測RiUi/yVIi/nARi/Q999.999533.4491874.6UiUo幅頻特性曲線fH/HzfL/Hz帶寬/HzAu18.949M105.34618.94889M94.833波特圖儀法測放大倍數(shù)和截止頻率（幅頻與相頻特性）波特測試儀-XBP1模式水平丨輻值丨相位I垂直rwirwikHzmHzF1.5Io上102.3Hz707.604691m百20mHz-0.014波特圖儀

22、法測放大倍數(shù)和截止頻率（幅頻與相頻特性）波特測試儀-XBP1模式水平丨輻值丨相位I垂直rwirwikHzmHzF1.5Io上102.3Hz707.604691m百20mHz-0.014Deg土苜h+ffl-1）低通濾波器實(shí)驗(yàn)電路圖Au999.924截止頻率/Hz102.3“交流分析法”Au999.9002截止頻率/Hz101.9942）高通濾波器實(shí)驗(yàn)電路圖波特圖儀法測放大倍數(shù)和截止頻率（幅頻與相頻特性）Au999.563f/Hz247.16“交流分析法”文件編輯視圖曲線圖光跡光標(biāo)符號說明IM耕助匿示儀視圖析分流交3幻X電|曲（g畫（固込人|題文件編輯視圖曲線圖光跡光標(biāo)符號說明IM耕助匿示儀視圖析分流交3幻X電|曲（g畫（固込人|題Q耳畫）包包電|Ay叫處烈e光標(biāo)-叵X1247.600yi70.7081mx29.0017ky2999.4402mdx8.7540k292.7321mdy/dx33.4398p1/dx114.233411200設(shè)計(jì)22交流分析士4一71040701004007001k頻率(Hz)4k10k1471040701004007001k4k10k頻率(Hz)Au999.4402f/Hz247.663）雙T帶阻濾波器實(shí)驗(yàn)電路圖800kD1VpkSOOQpF3QQ0pF;40呻800kD1VpkSOOQpF3QQ0pF;40呻600