Motor current during the PWM off period decays rapidly through two anti-parallel diodes of Sa ' and Sb, and reverse application of bus voltage (for regeneration) ensues.

Part 2 considers the design of the circuit and coding for the project's stepper motor controller.] 3.5 Speed-Controlled DC Motor with Tach Feedback and Thermal Cutoff E-2's main propulsion system ...

The circuit switches the MOSFETs, which in turn send current through the legs of the ac motor. A typical high-speed PWM motor-control system uses fast-switching, high-power bipolar transistors, IGBTs ...

Key players in PWM motor control – a disruptive innovation in the automotive industry ‘Application diversity’ measures the number of applications identified for each patent.

To manage and regulate power with both efficiency and finesse, electronics designers turn to Pulse Width Modulation (PWM).

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 ...

The claim is that it can reject PWM slew rates of >500V/µs and settles within 500ns to provide a 0.3% accurate (of full-scale) measurement of winding current “allowing motor control designers to ...

Design firm Escatec has developed a control algorithm for a sensorless brushless DC motor to be used as a surgical drill with the control precision for medical procedures. The precision motor control ...

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 ...

Designed for pulse-width modulation (PWM) motor control, the A3948 integrates on-chip DMOS output transistors in an H-bridge configuration. Consequently, the motor driver chip ...

The device's PWM functionality allows smooth motor control: With an enhanced PWM frequency of up to 25 kHz, which is outside the human acoustic range, the DC motor control is carried out without ...