ABSTRACT

This project involves a design of sun tracker for PV system. The circuit of the sun tracker is designed in such a way that it follows the track of the sun as it travel in the sky. The LDR are connected to noninverter input of the operational amplifier whose reference voltage resistor R1 and R2 is 10Ω each. At the output of the operational amplifier are NPN and PNP transistor. These transistors are used to drive the DC motor in forward and backward directions which corresponds to the direction of the sun in the sky. The motor is switch through a relay.