摘 要:本文设计了直流稳压可调电源的一个方案,该方案主要由整流滤波、单片机数控、稳压输出三部分电路组成,其工作原理主要是通过对ST89C52数控调节以输出实际工作所需的直流电压值,其中数控调节设置的步进等级为0.1V,可调节输出显示0-12V的直流电压,500mA的电流,此外设计方案除了可以数控调节输出,还可以固定输出±15v,+5V的直流电压,供实验室和工厂检测或调试使用。本文设计的直流稳压电源与传统工厂生产和实验室中的直流电源相比,线路较为简单、响应敏捷、具有较高的稳定性。另外方案还设计了简易的数码管显示电路,方便读取输出的电压值。38196 毕业论文关键词:ST89C52;直流稳压;步进可调;DAC
Circuit Design of DC Regulator with Adjustable Output
Abstract:This essay introduces the DC stabilized power supply,which mainly consists of rectifier regulator , MCU NC and regulated output three-part circuit,This system works by the adjustment of numerical ST89C52 to obtain the actual work required DC voltage. Stepping grade can be exactly 0.1V, output voltage range of 0-12V, output current of 500mA, and the value of the output voltage can be displayed by the digital tube. Comparing with DC power supply in traditional factories and laboratories, it has simple lines, quick response, good stability, high efficiency characteristics. In addition, the system also designed a digital display circuit, which makes reading the voltage value of output easily.
Keywords: ST89C52; DC; Step adjustment; DAC
目 录