The control circuit of a control apparatus or system is the circuit which carries the electric signals directing the performance of the controller, but does not carry the main circuit power.

The current that flows in the armature winding of a D.C. motor tends to produce magnetic flux in addition to that produced by the field current. This effect, which reduces the torque capacity, is call [..]

Abbreviation for counter electromotive force, which is the product of a motor armature rotating in a magnetic field. This generating action takes place whenever a motor is rotating. Under stable motor [..]

The measured distance from the center of a pinion to the center of its mating gear.

An electromechanical transducer that produces a serial or parallel digital indication of mechanical angle or displacement. Essentially, an encoder provides high resolution feedback data related to sha [..]

Also called end shields, cover plates, etc., used to support bearings or to cover the windings. On small motors the end bell is a complete cover, with a few openings for cooling. On large motors, when [..]

That part of the motor housing which supports the bearing and acts as a protective guard to the electrical and rotating parts inside the motor. This part is frequently called the "end bracket&quo [..]

It is a fundamental principle of winding that adjacent poles must be wound to give opposite magnetic polarity. This does not mean that the coils actually have to be wound in this direction before bein [..]

Automotive Duty Quality Specification

The time required for a motor to reach full speed from standstill (zero speed) position.