Electric motor , also known as motor or motors, is the electrical energy into mechanical energy, and can re-use of machinery to produce kinetic energy, used to drive other devices of electrical equipment. Motor types are very numerous, but can be broadly divided into the AC motors and DC motors for use in different occasions.

DC Motor the benefits of speed in the control of relatively simple terms, only the control voltage can control the total size has speed, but not such a motor at high temperature, flammable and other operating environments, and because of the need for carbon brush motor As a current converter (Commutator) components (brush motor), so they need regular cleaning of carbon brushes dirt generated by friction. The brushless motor brushless motor as compared with brush, brushless motor, carbon brush and shaft for less friction and therefore less power is relatively quiet. Production more difficult, the price is high. AC Motor  can at high temperature, flammable and other environment to operate, and do not regularly clean up the brush dirt, but speed control is rather difficult, because the need to control AC motor speed control of AC frequency (or using proximity motor, the internal resistance by increasing the way, in the same lower frequency AC motor speed), control the voltage will only affect the motor torque. General civil motor voltage 110V and 220V so two, in industrial applications such as patterns are 380V or 440V.