高精度直流电流稳流源数控系统设计及实现

Numerical controlled high precision constant-current source

以AT89S52为核心,通过A/D、D/A转换和V/I转换及独特的算法实现高精度的电流控制,电流输出范围为20～2000mA的数控直流电流源.该电流源具有电流可预置,lmA步进,同时显示给定值和实测值等功能.

Expounds the design of the numerical controlled constant-current source. The system core is AT89S52. The A/D、D/ A、V/I converts and the specific arithmetic is used to carry out high precision and the current output range from 20 to 2000mA. The source realizes that the output current can be set,lmA adjusted step by step,the display of the present value and the practice measure value.