This project is on Design and Construction of digital AC power controller. The desire for power to be controlled by means of phase angle variation of the conduction period brought about a digital AC power controller. Controlling the phase angle can be made simple and easy if we set different firing times corresponding to different firing angles. The circuit can be used as power controller in lighting equipment, hot air equipment, universal single phase AC motor, heater, etc. This project is aimed at constructing the circuit with necessary modification to serve this purpose.