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1、直流稳压电源摘要摘要：目前，我国生产和使用的本质安全型直流稳压电源大都是线性电源，其输出保护电路大多采用传统的模拟保护电路。因此，本质安全电源的容量普遍比较低。随着我国煤矿机械化、自动化程度的提高,本质安全型电气设备在井下的监控、通讯、信号、仪表和自动化系统中应用日益广泛。由于这些设备的不断投入使用，矿用直流稳压电源的需求量稳步上升，与此同时对其容量也提出了更高的要求。从一定意义上讲，隔爆兼本质安全电源输出容量的大小取决于输出保护电路的反应时间。本课题针对矿用本安电源输出保护电路进行设计，能够适应我国煤炭行业快速发展的需要，并且具有重要的实际意义。研究结果表明，输出保护电路的设计影响到整个电
2、源的性能，因此，应该熟悉本质安全电源的结构、检测标准、火花试验装置等相关文件和标准。在此基础上，设计保护电路的结构、选择反应速度较快的电子元器件用于保护电路主要元件。使得保护电路的反应速度满足国家标准规定的要求。关键词：保护电路、本质安全、本质安全电源、国家标准。10ABSTRACTABSTRACT:Atpresent,China'sproductionanduseofessentialsafety-DCpowersupplyarelargelinearpowersupply,outputtoprotectitsmosttraditionalcircuitsimulationprotecti
3、oncircuit.Therefore,intrinsicallysafepowersupplycapacitygenerallyquitelow.AsChina'scoalminemechanizationandincreasethedegreeofautomation,intrinsicallysafeelectricalequipmentinundergroundsurveillance,communications,signals,instrumentsandautomationsystembecomesmorewidely.Asaresultoftheseequipmentcons
4、tantlyinuse,miningDCPowerdemandhasbeenincreasingsteadily,andMeanwhilethecapacityofitssethigherrequirements.Inacertainsense,flameproofandintrinsicallysafepoweroutputcapacityoftheoutputdependsonthesizeoftheprotectioncircuitofreactiontime.Theissuesagainstminingoutputpowerofthesecurityprotectioncircuit
5、design,Chinatoadapttotherapiddevelopmentofthecoalindustryneeds,andhasimportantpracticalsignificance.Theresultsshowthattheoutputoftheprotectioncircuitdesignaffecttheperformanceoftheentirepowersupply,therefore,Safetyshouldbefamiliarwiththenatureofthepowerstructure,testingstandards,testingequipmentand
6、sparks,andotherrelateddocumentsandstandards.Onthisbasis,theprotectioncircuitdesignofthestructure,choicereactionfasterelectroniccircuitprotectioncomponentsformajorcomponents.Protectioncircuitmakestheresponsespeedtomeetthenationalstandardrequirements.Keywords:protectioncircuit,intrinsicallysafe,intri
7、nsicallysafepowersupply,thenationalstandard.10目录第1章前言························································4第2章电路设计·····················································52.1电路原理分析··························
