15 Dc Motor Speed Control Circuit Diagram Using 555 Timer. When power is supplied, 555 timer generates pwm signal with a duty ratio based on the pot resistance ratio. This circuit uses similar pwm technique to control motor speed and uses ic 555 to generate pwm signals.
Using this circuit you can control speed of a 6 volts dc motor, by simply rotate left or right the 50 k potentiometer. To vary the speed of the dc motor, timer 555 was used as a pwm (pulse width modulator). Many dc motor speed control circuits have been published here but this is the first one using circuit diagram of dc motor controller.
Using the humble 555 timer chip you can control three different types of motors:
15 Dc Motor Speed Control Circuit Diagram Using 555 Timer. The 555 timer ic is a handful of active components all baked into one beautifully useful 8 pin package. It consists of only two 555 timers, a potentiometer, and some hookup wire on. If you are using microcontroller means you can bias this timer ic through micro. The en555 is usually used to generate continuous series of pulses.