毕业设计论文数控直流稳压电源摘 要本设计为一种简易数控直流稳压电源。该电源由电源供电模块、加减数控调压模块、数模转换和模数转换模块、电压调整模块以与数字输出显示电路等组成 。该设计以 STC90C516RD+单片机为基本控制核心，通过单片机控制数模转换芯片DAC0832 输出稳压电源的基准电压，再通过两级放大输出到电压调整管，控制调节输出电源电压。该数控电源可以通过粗调和微调按键实现 0-10V 之间不同幅值的电压输出，同时还设置了+3.3V 和+5V 电压设定按键，以实现常用芯片电压的快速设定。设计中采纳 LCD1602 液晶显示设定电压和电源输出的实际电压，便于观察和调整。在设计中，对该电源系统进行了 Proteus 仿真，配合 Keil uVision4软件的应用，得到比较满意的仿真结果。另外，该数控电源具有较好的抗干扰能力，可靠性较高，易于调节，操作简单，输出电压值与真实显示电压值精度较高等优点。关键词：数控直流稳压电源，STC90C516，模数转换，Proteus 仿真，LCD1602 Numerical ControlDCRegulated Power SupplyABSTRACTThis graduation design is a kind of numerical control dc regulated power supply. The power is supplied by the regulated power supply power supply module, plusor minus numerical control regulating module, digital-to-analog conversion and analog-to-digital conversion module, voltage regulation modules, and digital output display circuit. The basic control core of this design is the 51 single-chip computer with a model of STC90C516, through the single-chip microcomputer control d/a conversion DAC0832 chip output reference voltage stabilized voltage supply, then through two stage amplifier output to adjust the tube voltage, controlling the output voltage. The numerical control power supply can be realized through the coarse and fine the voltage of the different amplitude between 0 -10 v output, also set up + 3 v and + 5 v voltage settingbutton, so as to realize the rapid commonly used voltage settings. The design adopts the LCD1602 LCD displayingthe setting vo...
