欢迎来到天天文库
浏览记录
ID:55783932
大小:498.50 KB
页数:12页
时间:2020-06-01
《电子专业英语教学课件作者高明辉第12章.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、Warming-upI.HaveyoueverseentheinstrumentintheelectronicLaboratory?Unit12Oscilloscope下一页返回II.Doyouknowthemeaningofthefollomingphrases?1.troubleshouting2.cathode一rayoscilloscope3.deflectionplatesIII.TalkaboutCurrentinEnglash.Andthefollowingpatternsyoucanuse.Doyouk
2、nowwhatthefunctionofanoscilloscopeisCouldyoutellmethedifferenttypesofoscilloscopesCouldyoudescribethesize,weightandshapeofanoscilloscopeWhatarethemainpartsoftheoscilloscopeCouldyouexplaintheworkingprincipleofanoscilloscopeUnit12Oscilloscope上一页下一页返回TextComprehens
3、ionOscilloscopeThecathode-rayoscilloscopeisoneofthetnoslitnporlanlelectronicmeasuringinslrutnenls.Itiswidelyusedforresearchanddeveloptnenlintheelectronicindustry,suchasdesignwork,troubleshooting,signaltnoniloringandproduction-linetesting,andmanyotherapplications
4、wheretheob-servalionofanelectricalwavefortnisdesired.Theheartoftheoscilloscopeisthecathode-raytubewhichconsistsofthebase,neck(inwhichanelectrongunisincluded),bulbandtheface一plate(screen).Theelectrongunconsistsofacalh-ode,whichetnilselectronswhenitishealed,acontr
5、olgrid,ananode,whichattractstheelectronbeamthroughit,andtwosetsofdelleclionplates.Onesetofdelleclionplatesisusedformovingtheelectronbeaminhorizontaldirection.Theothersetisusedtomovetheelectronbeaminverticaldi-reckon.Thebeam,starlingfromthecathode,passesThroughth
6、econtrolgridandtheanode,betweenthetwosetsofdeflectionplates,andstrikesthefaceofthecathode-raytube.Unit12Oscilloscope上一页下一页返回Unit12Oscilloscope上一页下一页返回MostoscilloscopesareACoperated,weigh40poundsormore,andusea5-inchscreen.Forapplicationswheresmallsize,lightweight
7、andportabilityarehighlydesirable,transistorizedoscilloscopearepreferredovervacuumtubetypes.Atransistorizedoscilloscopeweighsabouttenpoundsormore,operatesfromAClineorthebatteries,andusesa3-inchscreen.Oscilloscopesrangefromthegeneralpurposetypestothespecial-purpos
8、etypes.Theformerissuitableforpracticallyanyusualapplicationsinservicing,cotntnunicalions,scientificorindus-trialworkwheretheliequencyofthesignalobserveddoesnotexceed5
此文档下载收益归作者所有