By definition, adjustable speed drives of any type provide a means of variably changing speed to better match operating requirements.…

When a current-carrying conductor is placed in a magnetic Field, it experiences a force. Experiment shows that the magnitude of…

Actuators are operated in the same way as solenoids. They are used to move mechanisms remotely. Some examples of actuators…

A solenoid is the term used for a heavy duty relay and like a relay acts as a switch saver.…

This is sometimes known as an ‘either/or’ relay because you can use either one circuit or the other. This type of…

Relays are used extensively in modern vehicles. They can be thought as electro/mechanical switches. They are often used to switch…

When the armature rotates a half a revolution ‘A’ is positioned at the south pole “S” and ‘B’ positioned at…

An electromagnetic force is a force that acts on a conductor when current flows in the conductor within a magnetic…

To understand this rule, open your hand, as shown below, with the thumb pointing perpendicular to the index finger, and…

TESTS WHEN ISOLATED 1) VISUAL TESTS: Check that motor frame is mechanically sound.  Remove terminal cover plate and check for…