The Introduction of Electric Motors

Electric motors are usually either based on an alternating current (AC) or a direct current (DC), though some motors can run either way. Electric motors use electricity to power a mechanical function. Although most electric motors still have brushes, there are now brushless motors and stepping motors that run through outside electronic sources. You can find small electric motors in your daily life, in pool pumps, fans, washing machines and vacuums. The shop has its fair share of electric motors as well, in drills and saws. Even your car has some electric motors, allowing you to use power windows, power locks and windshield wipers. Electric motors are based on a very simple principle: magnets either attract or repel each other based on position. The motor will have two magnets; movement results when the magnets are either swinging away from each other or being attracted to each other (in other words, rotation). This turns the motor to cause the desired movement. The average small electric motor is made from two magnets inside a casing, an electromagnet (wire twisted around a piece of metal to form a shaft) and a pair of brushes. If you require superior power, use rare earth magnets. You can also choose brushes made from different ingredients to give you a customized motor that fills your specific needs. Source: industrial101.com