DC motors or Direct Current Motor helps converting electrical energy to mechanical energy. It’s mostly used in electronic devices and household applications. Truth is, it is used widely in CD players, remote control airplanes, computers, electric razors and so on. The stator, armature, rotor and commutators with brushes are some of the important aspects of direct current motors. It’s deemed to be the most basic type of motor used in various electrical appliances. When compared to AC motors, it is more powerful and controllable.
There is field of magnetism produced in the device as it is equipped with electromagnetic windings and magnets. The armature is placed between north and south poles of magnet inside the motor. And when the power is passed on the armature, the magnetic field interacts with field that’s generated by the armature. Opposite polarity makes the motor to turn.
The truth is, there are 3 kinds of DC motors that you can find today and these are stepper motor, brushed and brushless motors.
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Stepper motors – this is one of the common variants of direct current motors. These said electrical brushless motors basically work on basis of electromagnets that rotates around the internal shaft. There are also computer controlled stepper motors that you can find in the market both online and offline. It’s used widely in floppy drives, satellites, toys, scanners and CD drives. Due to the way it functions, it can be controlled easily but, the stepper motors are requiring external controller as it needs low power.
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Brushed motor – brushed motors are deemed to be standard DC motors that could be powered by any kind of DC battery. It has split run commulator but, these said devices have their drawbacks too. The brushes and the commutator ring gets contact with each and this creates friction and considerable damage to the brushes and ring. Because of this, the brushes and the ring needs constant replacements. Modern brushes are made out of carbon that is a lot more durable than copper wires and creates less friction.
Brushless motors – since these motors don’t include brushes, it’s deemed to be the best device to use. The beauty of this is that, it needs less maintenance and more durable. What’s more, it is efficient and powerful compared to other types of DC motors. It has external commutator and rotor that reverses the direction of the current. And due to the reason that this motor does not include brushes, there is hardly a possibility for equipment damage or friction. Thus, it could be used on electrical equipment and heavy machineries. Also, it is deemed to be cost effective approach and cooler than AC motors thus, it last longer.