基于ADuC812精密数控电流源的设计与实现

Design and Implement of Exact Digital Control Current Source Based on ADuC812

文中设计采用电流反馈的压控电流源电路,以集成功率放大器OPA541作为功率输出器件,以ADuC812单片机作为数控核心达到了精密电流源的设计要求。采用MAX472精密电流传感器测量实际输出电流值,由液晶显示器显示电流的精密反馈调整,达到了较高的性能指标。

The design of this paper adopt voltage-control current source circuit with current feedback, integrate power amplifier OPA541 regard as power output instrument, ADuC812 microprocessor as digital control core, realize the design require of exact current source. Further more, MAX472 as exact current sensor measure the practical output current value, LCD display the exact feedback adjustment of current, the design can achieve upper target.