San Diego, Calif.—ROHM Electronics has introduced an H-bridge driver IC line, offering designers a simple upgrade path to pulse-width modulation (PWM) speed control using either analog or digital ...

Most variable-speed motors get their power from pulse-width-modulated (PWM) signals. These motors often replace ones that rely on varying-amplitude DC or AC signals to control their speed. PWM ...

In designing a simple spectroscopy setup, we needed to synchronize the speed of a small, inexpensive dc motor precisely to 6000 rpm (100 Hz). Our first idea was to take a phase ...

Pulse-width modulated motor drives are becoming the dominant method of variable speed motor control, and are being used not only in industry, but in applications as diverse as electric vehicles ...

It’s an excellent way to learn about both PWM motor control and the use of 555 timers, all with a very low parts cost and readily available components. We’ve seen such setups before, used as ...

Fan speed control Due to the high tolerances, when using thedirect PWM method the speed of fans has to be controlled. Maintainingthe nominal speed of the fan can be done through open loop and ...

Electronic speed controllers for drones are essential to provide motor speed control in low and medium size commercial drones. One of the most widely used solution is based on a sensorless FOC ...

In use, the pot is adjusted until little speed variation occurs when the motor is loaded. Motor speed will start to oscillate (or run away) if over-compensation is applied, so back the control off a ...