Motors are available in multi-speed configurations that can provide constant torque variable horsepower, constant horsepower variable torque, and variable torque variable horsepower. Traditionally, DC ...

Motor basics. Electric motors originated in the 19th century, and they’ve been helping out around the house for close to 100 years. A common way to classify motors rests on their internal ...

Then you will learn a detailed methodology for researching design requirements for AC motors, and how to use these requirements to pick the right motor for your needs. Afterwards, you will have ...

The circuit in the figure provides three levels of speed control for a dc motor, using a PC’s parallel port (LPT1). A C++ program performs the control functions by allowing the signals from the ...

Single-phase and 3-phase AC squirrel cage induction motors need some type of control circuit to initiate a start or stop function. The two types of ladder control circuits commonly used are the 2-wire ...

Variable speed drives are the usual way of approaching this goal. The typical way of controlling ac motor speed is with an inverter. The ac from the grid is first rectified to dc.

The slip of an electrical induction motor could be defined as the difference between its synchronous speed and asynchronous speed; the synchronous speed of the motor is the rated speed at a nominal ...

Fresno, CA - March 12, 2007. Tempest Technology, Inc. announces the introduction of a new blower line: the VSX Series of Variable Speed Electric Blowers. A high powered electric option, the VSX ...

A second method of reducing the energy electric motors expend is to use variable-speed drive systems, which can account for energy saving approaching 50%. In addition to energy savings, ...

Electric-motor control requires electronic circuits, which until a few years ago were made with discrete components because of the voltages and currents involved. Engine control today is at the ...