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1、論文題目:基于單片機(jī)雙路直流穩(wěn)壓可調(diào)電源專業(yè):微電子學(xué)本科生:簽名指導(dǎo)老師:簽名摘要數(shù)控直流穩(wěn)壓電源以其優(yōu)良的輸出特性,廣泛應(yīng)用于各種電子線路中。質(zhì)量?jī)?yōu)良的數(shù)控電源,能滿足電子線路各種要求。因此,數(shù)控電源的設(shè)計(jì)頗為重要。本文主要介紹了基于51單片機(jī)數(shù)控直流穩(wěn)壓電源的設(shè)計(jì)過(guò)程,分為以下4部分:(1)詳細(xì)介紹數(shù)控直流穩(wěn)壓電源中包含的整流電路、濾波電路、穩(wěn)壓電路、運(yùn)放電路及保護(hù)電路等。(2)設(shè)計(jì)出了各部分電路、鍵盤和顯示電路的電路圖,并完全硬件焊接。(3)給出了系統(tǒng)的軟件設(shè)計(jì)思路及軟件流程圖。(4)通過(guò)硬件制作,
2、實(shí)驗(yàn)和分析,設(shè)計(jì)出的電源能完全滿足設(shè)計(jì)要求,可以對(duì)輸出電壓進(jìn)行0V~12V的任意調(diào)制,并且有過(guò)流保護(hù)功能。此外,本設(shè)計(jì)的直流穩(wěn)壓電源能夠適應(yīng)所帶負(fù)載的啟動(dòng)性能,電路穩(wěn)定可靠,且能夠輸出較大的電流。關(guān)鍵詞:直流穩(wěn)壓電源,單片機(jī),過(guò)流保護(hù)5Subject:BasedonSCMdualvoltagedcadjustablepowerSpecialty:MicroelectronicsName:WenXiaogangSignatureInstructor:GaoYuSignatureABSTRACTwithitse
3、xcellentoutputcharacteristics,Numericalcontroldcvoltagestabilizerisusedinallkindsofelectroniccircuitswidely.Qualitycontrolofpowerelectroniccircuits,andcansatisfytherequirements.Therefore,thedesignofthecontrolpowerisimportant.Thispapermainlyintroducesthe51-
4、seriesmicrocomputerbasedonnumericalcontroldcvoltagesourceofdesignprocess,dividedintothefollowingfourparts:(1)thedetailedintroductionofncdcvoltagestabilizercontainsrectifiercircuit,filtercircuits,circuit,amplifierandprotectcircuit,etc.(2)designedcircuit,the
5、keyboardandeachpartofthecircuitdiagramshows,andcompletehardwarewelding.(3)presentedsystemsoftwaredesignideasandsoftwareflowchart.(4)throughthehardwareproduction,experimentandanalysis,designofpowersupplycancompletelysatisfythedesignrequirementsofoutputvolta
6、ge,canmakethe12V0V~andover-currentprotectionfunction.Inaddition,thedesignofthedcvoltagestabilizerwhichcanadapttobringloadstart-upperformance,stableandreliable,andcanbecircuitofcurrentoutput.Keywords:regulatedpowersupplyofdirectcurrent,SingleChipMicyoco,ove
7、rcurrentprotection目錄摘要1ABSTRACT55目錄6前言7第1章選題意義101.1設(shè)計(jì)要求101.2電源簡(jiǎn)介101.3方案比較11第2章基于單片機(jī)雙路直流穩(wěn)壓可調(diào)電源的基本原理142.1直流穩(wěn)壓電源總體結(jié)構(gòu)142.2電源變壓器152.3整流電路152.4濾波電路172.5穩(wěn)壓電路182.6運(yùn)放電路192.6.1電壓運(yùn)放192.6.2功率運(yùn)放192.7保護(hù)電路:20第3章直流穩(wěn)壓可調(diào)電源硬件設(shè)計(jì)213.1硬件設(shè)計(jì)原理和思路213.1.1系統(tǒng)硬件的基本組成部分213.1.2電源部分設(shè)計(jì)213
8、.1.3穩(wěn)壓電路的設(shè)計(jì)223.1.4運(yùn)放電路的設(shè)計(jì)223.1.5過(guò)流保護(hù)電路的設(shè)計(jì)233.2硬件設(shè)計(jì)243.2.1單片機(jī)部分243.2.2D/A轉(zhuǎn)換部分253.2.3按鍵部分293.2.4數(shù)顯部分303.2.5功率放大部分:303.2.6總硬件圖:31第4章直流穩(wěn)壓可調(diào)電源軟件設(shè)計(jì)324.1主程序流程圖324.2按鍵響應(yīng)流程圖:334.3程序運(yùn)行原理33第5章結(jié)論與展望3455.1電源測(cè)試345.1.1電壓數(shù)值測(cè)