基于STC12C5A60S2的电子负载的设计

Design of Electronic Load Based on STC12C5A60S2

由于电阻在做测试负载时具有连续调节困难,受温度影响等缺点,以STC12C5A60S2作为核心控制单元,设计了具有恒压、恒流、恒阻工作模式的直流电子负载,同时电路具有过电压、过电流、MOS管过热保护功能。通过样品的实测数据表明,达到了设计指标模式可调、参数连续可调、控制精度、响应时间等的要求。

This paper designs the DC eIectronic Ioad based on core controI unit STC12C5A60S2,which contained operating mod-eIs of constant voItage （CV）,constant current （CC）,constant resistance （CR）,and the eIectrocircuit had three protection effects against overvoItage, overcurrent and overheating.Test data shows that the designed product achieved requirements,for ex-ampIe,the adjustabIe mode,the continuousIy adjustabIe parameters,controI accuracy,response time.