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1、科技英语课程论文（报告、案例分析）院系物理与电子工程学院专业12电子信息工程班级1211电工学生姓名张三学号2012128000任课教师罗倩倩2014年12月14日DesignAnalysisofTime-domainSamplingTheoremZhangSanSchoolofPhysicsandElectronicEngineering,HubeiUniversityofArtysAndSciences,P.R.China,441000gjtyxfxy2012@qq.comAbstract：Understandingoftime-domainsamplingtheoremisdesc
2、ribedandanalyzedbytime-domainsamplingtheorem,theoriginalcontinuoussignalcontinuoussignalusedsamplingpulsesequencefromtakingaseriesofdiscretevalues,whenthesamplingfrequencyissatisfiedtobeabletoeffectivelyrestorerestorestheoriginalsignal.UsingMATLABanalysisoffrequencyresponseofthesystemtocalculatet
3、hecriticalsampling,oversampling,undersamplingrecoveryunderthreedifferentconditionsoferror,andthensummarizetheeffectsofsamplingfrequencyonasignalreturnederror.Keywords：Samplingtheorem,Criticalsample,Sub-Nyquistsampling,Samplefrequency1IntroductionSincetheprogrammeusesthreeintegratedvoltageregulato
4、rchip,voltageoutputofrepeatingsections,integratedvoltageregulatorisnotmadefulluseof.ProgrammeIIusingtheprogrammestwointegratedvoltageregulatorchipsreducesavoltageregulatorchip,andachievepositiveandnegativeadjustable,whiletheoutputofpositiveandnegative5Vandifinthesecondplanbasedoncurrentextensioni
5、nterfaces,expansiveflowcanalsopickupanexternalcircuit,soweadoptedtheschemedesign・2CircuitdesignAtpresent,thelow-powerrectifierdiodebridgerectifiercircuitforfour,werelaterpackagedasarectifierBridgeRoad,calledthe"Siliconbridge*1or^bridge11,easytouse,overcomefull・wavebridgerectifiercircuitrequiresse
6、condaryCentertapofthetransformerandrectifiercircuitdiodeunderreversevoltagefaults,butusetwodiodes・Insemiconductordevicedevelopmentfaster,lower-costtoday,thisdrawbackdoesnotstandout,thusthebridgerectifieriswidelyusedinpractice・1Designandanalysis3.1DesignofDCpowersupplySincetheprogrammeusesthreeint
7、egratedvoltageregulatorchip,voltageoutputofrepeatingsections,integratedvoltageregulatorisnotmadefulluseof.ProgrammeIIusingtheprogrammestwointegratedvoltageregulatorchipsreducesavoltageregulatorchip・Oversamplingsampling
