Abstract Application of single-chip microcomputer system for monitoring the field of modern industry has brought a new technological revolution. Automation, intelligent single-chip micro computer are inseparable from the development and use. With the development of times, digital electronic technology has spread to our lives, work, research in various fields. Such as heating, lighting and other applications, need to adjust the AC voltage. This is adjusted being able to care for loads power condition only but is disregards the alternating voltage extent size, could be considered a way to adjust the duty cycle to achieve the purpose of adjustment of power. In this paper, thyristor power regulator sharing the development of the status quo, the development problems faced by. Of hardware systems and software systems to achieve, analysis and design of a thyristor-based exchange AT89C2051 MCU Power Regulator. For the control of a single-chip core, generated trigger signals, thyristor drive isolation, In order to achieve the purpose of regulating the load power. This Power Regulator thyristor in conduction is zero and the zero-crossing turn-off. Therefore, the waveform of the power does not produce distortion, interference small.
Key words:Single-chip; Thyristor; AC Power Regulator