Pwm Motor Speed Control Circuit Diagram

This arduino based little digital tachometer was originally created for counting the speed of turntables and fidget simple stir plate t k.
Pwm motor speed control circuit diagram. The simplest method to provide a variable power supply is by providing a variable series resistance between the motor and the supply and this is common in ac motor since the series resistance can be replaced by a series inductance that doesn t. The moment pin 6 triggers pin 3 and pin 7 reverts to logic low. The speed of an electric motor is controlled by controlling the power source of the motor. The maximum output of the 555 ic is 200ma due to which we have used a bd135 transistor to drive higher current load of upto 1a.
This easy to make pwm dc motor controller is made using ic cd40106b. Adjusting the 50k potentiometer used in the circuit can control the speed of the motor. Write for us earn money.