Special Motors

Faults in Single Phase Induction Motors and their Remedies

During the operation of single-phase ac motors, it experiences various faults at the time of starting or stopping or while running. The faults in single-phase motors are due to many reasons like over or under currents, ove…

Characteristics of a Stepper Motor - Detent & Holding Torque

In the last article, we have discussed different types of stepper motors with their constriction and working principles. Now, let us see the characteristics of a stepper motor. The stepper motors characteristics under stati…

Hybrid Stepper Motor - Construction, Working & Applications

A stepper motor is an electromechanical device that converts a train of input pulses into a train of step movements. In the recent two articles, we have seen about permanent magnet and variable reluctance stepper motors. …

Universal Motor – Construction, Working & Characteristics

Universal Motor is a single-phase commutator type motor. It is a special type of motor because either it can be run on a.c. or d.c. supply. The main advantage of this type of motor is that it can be developed in ratings of …

Permanent Magnet Stepper Motor - Construction & Working

A stepper motor is an electro-mechanical device that actuates a train of step movements of a shaft in response to a train of input pulses. The step movement may be angular or linear. The step movement of the motor is accor…

Ac Series Motor - Construction & Principle of Operation

Principle of Operation of A.C. Series Motor :      An ordinary d.c.series motor will run in the same direction regardless of the polarity of the supply. The direction of the torque depends upon the relative directions in space…

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