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1、外文翻译SwitchingPowerSupplySwitchingpowersupplyworkinhighfrequency,highpulsestate,areanalogcircuitsinaratherspecialkind.Clothboardstofollowtheprincipleofhigh-frequencycircuitwiring.Pulsevoltageconnectionasshortaspossible,includinginputswitchconnectedtothe
2、transformer,outputtransformertotherectifiertubecable.Pulsecurrentloopassmallaspossiblesuchastheinputfiltercapacitorisreturnedtothetransformertotheswitchcapacitornegative.Someout-endedoutputtransformersaretheoutputrectifiertotheoutputcapacitorbacktotran
3、sformercircuitXcapacitorascloseaspossibletotheinputswitchingpowersupply,inputlinesshouldbeavoidedinparallelwithothercircuits,shouldbeavoided.YcapacitorshouldbeplacedinthechassisgroundterminalorFGconnectors.Atotaloftouchinductionandtransformertomaintain
4、acertaindistanceinordertoavoidmagneticcoupling.Suchaspoorhandlingoffeelinginbetweeninductorandtransformerplusashield,overanumberofEMCperformanceforpowersupplytothegreaterimpact.Generaltheoutputcapacitorcanbeusedtheothertwoacloserectifieroutputterminals
5、houldbecloseto,canaffectthepowersupplyoutputrippleindex,twosmallcapacitorinparallelresultsshouldbebetterthanusingalargecapacitor.Heatingdevicestomaintainacertaindistance,andelectrolyticcapacitorstoextendmachinelife,electrolyticcapacitorsistheswitchingp
6、owersupplybottlenecklife,suchastransformers,powercontrol,highpowerresistorsandelectrolytictomaintainthedistancerequiredbetweentheelectrolyteleavingspaceforheatdissipation,conditionspermitting,maybeplacedintheinlet.Controlparttopayattentionto:Weaksignal
7、highimpedancecircuitconnectedtosamplethefeedbackloopasshortasintheprocessingasfaraspossibleavoidinterference,thecurrentsamplingsignalcircuits,inparticularthe13外文翻译currentcontrolcircuit,easytodealwithsomeunexpectedbadTheaccident,whichhadsomeskill,nowto3
8、843thecircuitexampleshowninFigure(1)Figure1betterthanYuFigure2,Figure2ZaifulltimebyobservingthecurrentwaveformoscilloscopeMingxiansuperimposedspikes,YouyuganraolimitedflowratiodesignZhiDianlow,Figure1thereisnosuchphenomenon,thereareswit
