电子类_毕业论文

黑龙江科技学院机械电子工程系本科毕业设计（论文）题目数字显示连续可调直流稳压电源的设计专业班级学号学生姓名指导教师设计所在单位年月数字显示连续可调直流稳压电源的设计摘要：随着科技的发展，电气、电子设备已经广泛的应用于日常、科研、学习等各个方面。电源已经成为电气和电子设备中必不可少的能源供应部件，对电源的研究和开发已经成为新技术、新设备开发的重要环节，在推动科技发展中起着重要作用。本文介绍了一种数字显示连续可调直流稳压电源的设计方案，此方案应用7824及7924芯片组成稳压电源的电源模块，用ICL7107芯片组成了数显模块，最终通过两个模块的连接实现连续可调直流稳压功能。同时，本文还对电源模块和数显模块的基本原理，参数计算和性能指标等进行了分析讲解。这种电源价格便宜，电路简单，并且可通过旋钮在-24V~24V范围内调节电压，使用方便、安全、稳定性高。关键词：稳压电源A/D转换器电源模块稳压模块ThedesignofdigitaldemonstrationcontinuouslyadjustableDCpowersupplyAbstract:Withthedevelopmentofscienceandtechnology,electrical,electronicequipmenthasbeenwidelyusedinallaspectsofday-to-day,scientificresearch,allaspectsoflearningandsoon.Powerhasbecometheessentialcomponentsofenergysupplyinelectricalandelectronicequipmenttheresearchanddevelopmentforpowerhasbecomeimportantinnewtechnology,newequipment,itplaysanimportantroleinpromotingthedevelopmentofscienceandtechnology.ThisarticleintroducesonekindofdigitaldemonstrationcontinuouslyadjustableDCpowersupply’sdesignproposal.Thisplanapplies7824and7924chipcompositionDCpowersupply’spowersourcemoduleandhascomposedthenumberobviouslymodulewiththeICL7107chip,finallyrealizescontinuouslytheadjustableDCconstantvoltagefunctionthroughtwomodule’sconnections.Atthesametime,thisarticlealsotothepowersourcemoduleandthenumberobviouslymodule’sbasicprinciple,theparametercomputationandtheperformanceindexandsoonhascarriedontheanalysisexplanation.Thiskindofpowersourcepriceischeap,theelectriccircuitissimple,andmayadjustthevoltagethroughtheknobinthe24V~-24Vscope,anditiseasytooperate,security,thestabilityarehigh.Keywords:stabilizedvoltagesupplyA/Dconverterpowermoduledigitaldisplaymodule黑龙江科技学院机械电子工程专业（论文）第1页目录第一章绪论..........................................................11.1直流稳压电源的介绍.............................................11.2直流稳压电源的技术指标.........................................11.2.1描述输入交流电压变化对输出电压影响的技术指标..............11.2.2描述负载变化对输出电压影响的技术指标......................21.3稳压电源的分类.................................................3第二章电源总体方案确定..............................................52.1电源模块的选定.................................................52.1.1晶体管串联式直流稳压电路..................................52.1.2用单片机制作的可调直流稳压电源............................52.1.3采用三端集成稳压器电路....................................62.1.4方案的确定................................................72.2显示模块的选定.................................................72.2.1采用双积分A/D转换器MC14433的方案........................72.2.2采用ICL7107的方案........................................72.2.3方案确定..................................................7第三章电源模块的设计.................................................83.1三端稳压器的工作原理...........................................83.2稳压器的主要参数...............................................83.2.1输出电压V。..............................................83.2.2输出电压偏差..............................................83.2.3最大输出电压ICM...........................................83.2.4最小输入电压Vimin..........................................93.2.5最大输人电压Vimax..........................................93.2.6最小输入、输出电压差(Vi-Vo)................................93.2.7电压调整率SV..............................................93.2.8电流调整率Si..............................................93.2.9输出电压温漂ST............................................93.2.10输出阻抗Z。............................................103.2.11输出噪声电压VN..........................................103.37824芯片的技术指标...........................................10黑龙江科技学院机械电子工程专业（论文）第2页3.47924芯片的技术指标...........................................113.5电源模块的确定................................................123.6电路参数的计算................................................133.6.1输入电压Ui...............................................133.6.2变压器副边的输出电压U2...................................133.6.3整流二极管及滤波电容.....................................133.7电源电路原理图确定............................................14第四章数显模块的设计...............................................154.1A/D转换器原理................................................154.2ICL7107简介..................................................184.3ICL7107的管脚排列............................................184.4ICL7107功能说明..............................................214.4.1模拟部分.................................................214.4.2数字部分.................................................234.5元器件的选择..................................................254.5.1积分电阻.................................................254.5.2积分电容.................................................254.5.3自动教校零电容...........................................264.5.4参考电容.................................................264.5.5振荡器元件...............................................264.5.6参考电压.................................................264.5.7ICL7107的电源供电.......................................264.6数显模块电路原理图确定........................................27第五章电路功能模块的连接...........................................295.1数显模块和电源模块的连接......................................295.2总电路原理图图................................................29结束语....................................