Abstract:

This paper introduces a single-chip microcomputer-based intelligent power supply design,which uses the MCU to control digital-to-analog converters to change the voltage regulator module subsequent output.The system consists of rectifier filter preliminary regulator of the MCU control of the DAC and display components.The power supply has continuously adjustable stepping with real-time display,overcoming the shortcomings of traditional voltage regulator power supply.

Key words: AT89C51;regulated power supply;stepping and adjustable row;DAC