Controlling the Direction of a DC Motor Using an H-Bridge Driver PCB Reference

Working of Bridge Driver: H-bridge driver circuit consists of four transistors which act as switches to rotate or spin the motor by turning it off or on in forward or reverse direction. It is a standard motor driver which can control the speed and direction of the motor. We can control the amount of current flowing to the DC motor which controls the speed of the motor using potentiometer. There is also a direction switch which controls the current path and thus the direction of motor rotation. IC NE555 is used to generate PWM. We want the motor to move continuously in forward and reverse direction which can be achieved by increasing the speed of the DC motor. The speed of the motor can be increased only by increasing the voltage. Pulse Width Modulation is used to provide a variable DC voltage to the motor. In PWM, as the name suggests, we increase the width of the pulse. It tells how long the pulse will remain on and off.