The DC MOTOR SPEED CONTROL circuit is primarily a 555 IC based PWM (Pulse Width Modulation) circuit developed to get variable voltage over constant voltage. The method of PWM is explained here.

To design a motor control circuit, select the motor type (DC or AC), choose a suitable power supply, pick an appropriate motor driver, decide on the control method (e.g., PWM for DC or VFD for AC ...

This pwm motor controller is using the fact that the small dc motor has the revolution speed depending on the power supply voltage. In this circuit the discharge time can be adjusted between 0.2ms and ...

If the switch is ‘on’ for a long duration, the average value of the PWM pulse increases, driving the motor to high speed, and vice versa. The advantage of using PWM is that there is minimal power loss ...

For example, to control a servo motor, we need to produce PWM signals with 50Hz frequency, so the frequency of a PWM signal is also controllable by program for all microcontrollers. For more ...

Which PWM motor-control IC is best for your application July 1, 2005 Pulse width modulation is a form of signal communication that transposes a signal from analog to digital form.

The back EMF, along with the RL circuit in a brushed DC motor, brings non-linearity to the PWM control and the PWM frequency and PWM duty cycle become significant for getting the best output power.

This circuit is intended for motion control applications, a common occurrence in robotics! This affordable PWM DC Motor controller can control any PMDC motor specified at 12 V to 30 V and 3 Amps max.

Many PWM-based AC control circuits such as inverters use MOFETs and ZCD circuits. MOSFET devices such as CS1501, AOZ5311NQI, AOZ5237QI and CS1601H have dedicated pins for ZCD and related functions.