集成運放前級加分立元件后級的10w音頻功率放大器設(shè)計畢業(yè)設(shè)計

1、濟南大學(xué)泉城學(xué)院畢業(yè)設(shè)計題目集成運放前級加分立元件后級的10W音頻功率放大器設(shè)計學(xué)院工學(xué)院專業(yè)電氣工程及其自動化班級1102學(xué)生學(xué)號2011010042指導(dǎo)教師指導(dǎo)教師二〇一六年五月二十五日宋體三宋體三號，居中號，居中宋體三號，居中，宋體三號，居中，字間不留空格字間不留空格要求使用WD軟件編輯文檔班級編號即可班級編號即可不使用“電氣不使用“電氣13011301”，“”，“13011301班”班”等濟南大學(xué)泉城學(xué)院畢業(yè)設(shè)計IIABSTRA

2、CTThemainpurposeistodesignanaudioamplifierwhichiscomposedofintegratedoperationalamplifierwithdiscretecomponentsimplementationoftheweakinputelectricalsignalamplificationwhichtheoutputpowerof10Wofaudiosignalstoachievedrive

3、theloudspeaker(load)tosound.InthedesignofpreamplifiercircuitusedisdoublepowersupplylownoiseofNE5532integratedoperationalamplifierwhichcanbecompletethesmallsignalvoltageamplificationthevoltagerangebetween3V~22Vsothe12Vpow

4、ersupplyisused.ThediscretecomponentsofthedualpowersupplyOCLcomplementarypushpullpoweramplifiercircuitisappliedtothepoweramplifierstageduetobetterperfmanceofthecircuitsoit’swidelyusedinHiFiaudioequipmentitismainlycomposed

5、ofthreepartsofinputstageintermediatestageoutputstagewhichmainlytocompletethecurrentamplification.Theinputstageisabiascircuitthemainlytoprovideabiasvoltageofthecircuittoeliminatethecircuitofcrossoverdisttionintermediatest

6、ageisaDarlingtonconnectioncircuitmainlytoincreasethemagnificationofthecurrenttheoutputstageisapushpullOCLcomplementarycircuitscancontroltheoutputofalargecurrentsuchthattheoutputresistanceissmallwithaloadcapacityenhanceme

7、nt.BecausethefrontrearstagesaredualpowersupplysothedesignofDCregulatcircuitrequiresoutputbothpositivenegativevoltages.ThewholepowercircuitconsistsoffourpartsofstepdowntransfmerrectifierfilterregulatNE5532n12Vvoltagesocho

8、osetheLM7812LM7912ofthreeTerminalvoltageregulat.Withtheinputpowerafterrectifyingfilteringcircuittheoutputvoltageof17Vtothepoweramplifiercircuittousethenafterbytheregulatcircuittheoutputvoltageof12Vfuseinpreamplifier.This

9、designmestrictlydealwithallaspectsofcohesiondesigntoachievebettereffectofaudiotransmissionusingdiscretecomponentsintegratedcomponentcircuitdesignhasitsusevalueresearchvalue[1].Keywd：IntegratedoperationalamplifierPreampli

10、fierPoweramplifier居中，小三，居中，小三，TimesTimesNewNewRomanRoman，加粗，段前：，加粗，段前：1.51.5行，段后：行，段后：1414磅，磅，1.51.5倍行倍行距TimesTimesNewNewRomanRoman小四，小四，1.251.25倍行距倍行距TimesTimesNewNewRomanRoman五號，加粗號，加粗TimesTimesNewNewRomanRoman五號五號外文摘要