This project and circuit finds a huge application in the area of robotics to control motor direction. This circuit uses the basic concept of transistors as a switch. H-bridge using transistorTransistor with proper biasing can be used as switch, i.e. it can be used to toggle between the two states of a switch on or off. This configuration of transistor has been used in H-bridge to drive a motor in both clockwise and anticlockwise direction. This circuit derives its name from the English alphabet “H”, which closely resembles the circuit pictorially. The circuit based project can be divided into two parts. The first part explains the concepts behind the working transistor as switch and the second part the function and operation of H Bridge. Keep on reading to find out how the circuit is constructed and what makes it work.