直流稳压电源的设计、安装、调试(参考资料)

Leaders:provincialagriculturalworkConferenceheldinXX,whichisourconcernandlove,willgreatlypromoteXXagriculturalandruraleconomicdevelopment.Firstofall,IamrepresentingXXmunicipalpartyCommitteeandGovernment,extendawarmwelcometotheattendingleaders!XXhasbeengivensupportandassistancetotheprovinceofagriculture,provincialagriculturalOffice,andexpressedheartfeltthankstoallthefriends!below,IXXwithabriefreport.AbasicXXofXXmunicipalitylocated(cities,omitted).Oneisthesuperiorecologicalenvironment.XXblue,clear,green,water,air,70%oflandintheterritoryiscoveredwithforests,grasslands,wetlandsandwaters,built7thousandsofsquarekilometersofthetotalareaofnaturereserves.Withinmajorindustrialpollutionsources,airqualityatthenationallevel,nationallevels,waterquality,soilpollution,purelandreputation,washeraldedbytheUnitedNationsenvironmentalofficialsthemostsuitableplaceforhumansurvival.Second,theenrichmentofnaturalresources.Atotalareaofmorethan5millionmuofarableland(whichowned1.53millionacres),theannualgrainoutputofmorethan2milliontonsandislocatedintheinternationallyrecognizedgoldcattle,thereshouldbemorethan400,000acresofgrazinggrassland,developinganimalhusbandryconditions;atotalareaof4.1millionacresofforestland,richinpreciouswoodsuchaspine,ash,yellowpineapple,standingtimbervolumeofmorethan26millioncubicmeters.ForestXiahashundredsofspeciespreciouswildlife,morethan200morespeciespreciousherbs,annualSuperthousandtonsofwildmushroomandreservesSuper100,000tonsofmountaindish;nectarplantthroughout,canbee100,000group,isChinabeeofXiang,andnationalNortheastblackbeereservesandimportantofbeeproductsproductionbase;canusingwater2.5billioncubicmetres,shouldbefishingwater460,000acres,richbigsalmon,andthreespentfiveLuo,Northcoldwaterspecialtyfish;foundandprovedreservesofmineralresourceshas36species.Third,geopoliticaladvantages.XXopenmidpointislocatedintheeasternpartoftheprovincealongtheborder,264kmlongborder,withnationalroadpassengerandfreighttransportport,builtontheborderbetweenChinaandRussiahasthelargestpermanentboundaryRiverBridge,runningatfullcapacitytheannualcargocapacityofupto2.6milliontons.Russiatwo(HABAandMarina),twocities(ImanandLesozavodsk)istheRussianFarEastindevelopedareas.Lesozavodskisonly8kmfromXXportcorrespondingtotheportofmarkovo,LuRinuostationisoneofthreerailwaymarshallingyardsinthefarEast,thefarEast-Siberianrailwayandaparallelroadrunsthroughthepass.Byrailandroad,totheNorthbyHABAcapitalKhabarovsk,theRussianhinterland,radiationintheCISandEasternEuropeancountries;totheSouththroughtheportofVladivostokandthenahuocardonthesea,toreachSouthKorea,JapanandotherPacificRimcountriesandregions.Fourisrichintourismresources.XXtouristresourcestypes,manyattractions,beautifulsceneryoftheSino-Russianborder-river-wusuliRiver,afamoustreasureisland,knownastheOrientalMaginotlineoftheJapaneseinvadingarmyTigerundergroundfortressruins,GeneralChi怒发冲冠凭栏处，潇潇两歇，抬眼望仰天长啸，壮怀激烈，三十功名尘与土，八千里路云和月，莫等闲白了少年头，空悲切，靖廉耻，犹末雪，臣子恨，何时灭!驾长车，塌破贺兰山缺。第一章直流稳压电源的设计、安装、调试直流稳压电源是各种电子产品中不可缺少的一部分，它的质量直接关系到仪器的质量，因此掌握稳压电源的设计与制作，对以后的实际工作是很有意义的。下面介绍小功率稳压电源的设计方法与制作过程。直流稳压电源，顾名思义，即电源的输出为稳定的直流电压。因此直流稳压电源是一种将交流电转换为平滑稳定的直流电的能量变换器。过去常采用分立元件来构成稳压单元，当性能指标要求较高时，电路结构往往比较复杂，给使用和维修带来许多不便。现在，随着集成电路的发展，集成稳压器的种类越来越多，应用也越来越广泛，在许多场合我们都偏爱于用集成稳压器为核心加上一些外围元件来构成稳压单元。用集成稳压器作稳压单元的电源叫做集成稳压电源，它具有一般集成电路体积小、重量轻、安装和调试方便、可靠性高等优点，因此具有良好的发展前景。由于集成稳压器的出现，稳压电源的设计大为简化。通过对本章内容的学习与实践，要求大家学会选择变压器、整流二极管（或整流桥）、滤波电容及集成稳压器等器件来设计直流稳压电源，掌握稳压电源的主要性能参数及测试方法，熟悉从理论设计到制作出成品的全过程。第一节直流稳压电源一直流稳压电源的结构与原理不论用分立元件构成稳压器，还是用集成稳压器，一个完整的直流稳压电源分为变压、整流、滤波和稳压四个部分。其框图及对应的特征波形如图1－1－1所示变压是利用电源变压器将电网220V的交流电压U1变换成整流滤波电路所需要的交流电压U2。当用11的变比来变压时，通常称为信号隔离。图1－１－１直流稳压电源结构图和稳压过程Leaders:provincialagriculturalworkConferenceheldinXX,whichisourconcernandlove,willgreatlypromoteXXagriculturalandruraleconomicdevelopment.Firstofall,IamrepresentingXXmunicipalpartyCommitteeandGovernment,extendawarmwelcometotheattendingleaders!XXhasbeengivensupportandassistancetotheprovinceofagriculture,provincialagriculturalOffice,andexpressedheartfeltthankstoallthefriends!below,IXXwithabriefreport.AbasicXXofXXmunicipalitylocated(cities,omitted).Oneisthesuperiorecologicalenvironment.XXblue,clear,green,water,air,70%oflandintheterritoryiscoveredwithforests,grasslands,wetlandsandwaters,built7thousandsofsquarekilometersofthetotalareaofnaturereserves.Withinmajorindustrialpollutionsources,airqualityatthenationallevel,nationallevels,waterquality,soilpollution,purelandreputation,washeraldedbytheUnitedNationsenvironmentalofficialsthemostsuitableplaceforhumansurvival.Second,theenrichmentofnaturalresources.Atotalareaofmorethan5millionmuofarableland(whichowned1.53millionacres),theannualgrainoutputofmorethan2milliontonsandislocatedintheinternationallyrecognizedgoldcattle,thereshouldbemorethan400,000acresofgrazinggrassland,developinganimalhusbandryconditions;atotalareaof4.1millionacresofforestland,richinpreciouswoodsuchaspine,ash,yellowpineapple,standingtimbervolumeofmorethan26millioncubicmeters.ForestXiahashundredsofspeciespreciouswildlife,morethan200morespeciespreciousherbs,annualSuperthousandtonsofwildmush