12v Dc Motor Circuit Diagram. The necessary rectification and filtering circuit should be constructed. DC Motor Learning Objectives.
I added 7812 for 12v for circuit section. DC Motor Learning Objectives. For convenience and safety enclose it in a small metallic cabinet.
BY using This Circuit You can control the speed of DC Fan by tuning the Potentiometer volume control variable resistance.
By using the above 12V DC motor speed control circuit diagram you will have a speed control between 5 and 95. These circuits are based on 555 Timer. Use a good-quality DIP socket for IC1. Finally do not forget to add a suitable heat-sink for transistor T2.