Home Question Answer What is Pulse Width Modulation (PWM)? What is Pulse Width Modulation (PWM)? Pulse Width Modulation (PWM) is an electrical pulse of variable width that is used to control servo motors. The length of the pulse determines how far the motor turns and the motor will stay in position as long as the position pulse is repeated. Related Questions What is a Pan & Tilt Mechanism? How does a pan and tilt system move? What is a Servo Motor? How is the pan and tilt system connected to the servo motor? What is a wizGear servo? How do Servo Motors work? What is the maximum amount of force a servo can exert? What is the maximum rotation a servo motor can achieve? Load More