The thyristor d.c. drive remains an important speed-controlled industrial drive, especially where the higher maintenance cost associated with the d.c. motor brushes (c.f. induction motor) is tolerable ...

Today’s high-efficiency furnaces rely on high-tech components to run efficiently. These high-tech components, in turn, rely on regular and routine maintenance to run in tip-top condition. Although ...

The precise meaning of the term ‘servo’ in the context of motors and drives is difficult to pin down. Broadly speaking, if a drive incorporates ‘servo’ in its description, the implication is that it ...

The wide range of electric motors can be a confusing topic even without considering intelligent motor control. This brief overview is for those who think motors are only divided into two categories: ...

Classic radial gap, stacked lamination stators. (Shown with and without windings.) As we look at catalogs of electric motors, we find them classified by power, speed, and torque. To a large extent, ...

The NEC defines a controller in a few different ways. In Art. 100, a controller is described as “a device or group of devices that serves to govern, in some predetermined manner, the electric power ...

To understand how a supercharger works, you have to think of the engine as a giant air pump. The motor’s four-stroke cycle first allows the pistons to draw air in through the carburetor, the intake ...

If the cylinder heads represent the aerobic side of an engine, and the rotating assembly is its muscle, then the camshaft must be the brain. The cam is the component that signals when the valves open ...