how to vary speed of dc motor | Electronics › Electronics › how to vary speed of dc motor This topic has 2 replies, 3 voices, and was last updated 11 years, 5 months ago by AJISH ALFRED. Viewing 3 posts - 1 through 3 (of 3 total) Author Posts May 9, 2013 at 10:48 am #2387 sonuParticipant Hi, Can any body help how can i vary the speed of dc motor? May 9, 2013 at 2:41 pm #9691 SavioParticipant The PWM method of motor speed control is one method but it can cause the motor to move in jerks. You can use this if using a microcontroller to control the speed. Reducing the voltage using a potentiometer will give a smoother movement. May 9, 2013 at 4:45 pm #9692 AJISH ALFREDParticipant Hi Sonu, PWM is the best method. just google it Author Posts Viewing 3 posts - 1 through 3 (of 3 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In