Speed, torque, and horsepower are three inter-related parameters in motor control. The speed of a motor, measured in revolutions per minute (rpm), defines a motor's ability to spin at a rate per unit ...

For those who think of trolling motors as those inexpensive accessories that push lightweight boats, canoes and kayaks around small lakes, it may have been difficult to understand the fuss when the ...

For the PDF version of this article, click here. More than 80% of the motors bought each year continue to be low-cost single-phase ac motors. Because these motors are not very efficient when ...