关键字: AT89S52;数控电源;V/I转换
ABSTRACT
Along with the social sciences and technological development, the power of an increasingly high demand, Power equipment and power technology will become the new century leading technology and mainstream products. NC current source power technology development is a concrete achievement. NC current source can be used not only to calculate the needs but also to enable current source module to reliable, high accuracy, applicability instead of the actual procedures parts.
This design based on the AT89S52 carried out high accuracy through the A/D conversion, the D/A conversion, the V/I conversion and special calculate way of performance. The electric current outputs ranged from 200mA to 1000 mA for digital controlling technology. The current source could be preset for 20mA step, also displayed both setting value and actual value.
This paper carried on the electric circuit design of the system with Protel99 SE software, debugged system software program with Keil C51 .