基于at89c51单片机数控电源

《基于at89c51单片机数控电源》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、摘要本文主要论述了一种基于AT89C51单片机为核心控制器的数控直流稳压电源的设计原理和实现方法，其主要由辅助电源、显示电路、控制电路、数模转换电路、稳压电路等部分组成。该系统原理是以AT89C51单片机为控制单元，，以数模转换芯片DAC0809进行转换为模拟信号。辅助电源提供各个芯片、数码管和放大器所需工作电压，显示电路用于显示电源输出电压的大小，输出电压值可通过按键对其进行步进控制（±0.1V），并且在按键长时间按下的时候能连续增加或减小。与传统的稳压电源相比具有操作方便，电源稳定性高以及其输出电压大小采用数码显示的特点。该系统具有

2、抗干扰性能好，可靠性高，及最终输出电压值与真实显示值精确度较高等优点。关键词:数控直流稳压电源AT89C51DAC0809IDesignofDigitalPowersourceAbstractThemethodofthispaperbasedontheAT89C51microcontrollercoreofthenumericalcontrollerDCpowersupplydesigntheoryandrealization.ThedigitalDCpowersupplyfromtheanalogpower,displaycircui

3、t,controlcircuit,digital-to-analogconversioncircuit,regulatorcircuitandanalog-to-digitalconvertercircuitcomposedofsixparts.Thissystemisbasedontheprincipleofsingle-chipmicrocomputertocontroltheunitAT89C51toDAC0809digital-to-analogconverterchipreferencevoltagetocontroltheo

4、utputvoltage,whiletheanalog-to-digitalconverterdac0809chipconvertthesamplingofvoltagetodigitalsignals.Analogpowersupplytoprovidethevariouschips,digitalamplifiercontrolandtherequiredoperatingvoltage,displaycircuitfordisplayingthesizeofpowersupplyoutputvoltage,outputvoltag

5、evaluemaybesteppingthroughthecontrolbutton(±0.1V),andalongbuttonpresswhenunderthecontinuousincreaseordecrease.Andcomparedtothetraditionalregulatedpowersupplywitheasytooperate,highpowerstability,aswellasthesizeoftheoutputvoltagecharacteristicsoftheuseofdigitaldisplay.This

6、systemhastheresistancetointerferencewell,thereliabilityishigh,andfinallyoutputvoltagevalueandrealdemonstrationvalueprecisionhighermerit.Keywords:DigitalDCVoltage-stabilizedPowerSourceAT89C51DAC0809II目录摘要....................................................................

7、.........................................................................................................IDESIGNOFDIGITALPOWERSOURCE..............................................................................................................IIABSTRACT...................

8、.......................................................................................................