2) where the AC motor can be divided into: single-phase motors and three-phase motors. 2. According to the structure and working principle can be divided into: can be divided DC motors, asynchronous and synchronous motors. 1) synchronous motor can be divided into: permanent magnet synchronous motor, synchronous reluctance motors and hysteresis synchronous motors. 2) induction motor can be divided into: AC induction motor and the motor commutator. There are magnetic position sensors, photoelectric and electromagnetic three types. Using magnetic position sensor of the brushless DC motor motor speed, the magnetic sensors (such as Hall elements, magnetic diodes, magnetic Gu diodes, magnetic resistance, or ASIC, etc.) mounted on the stator assembly , for detecting the permanent magnet, the magnetic field change generated when the rotor rotates. Motor Power | l Swiss mechanical and electrical quality (certified) | motor supplied by the Swiss liter HVAC Electrical Equipment Factory. L Rui HVAC Electrical Equipment Factory (www.dzsrxfkt.com) is an industry leader in Shandong Dezhou, fans, ventilation equipment, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In liters Swiss electromechanical leadership with the staff warmly welcome all inquiries negotiations to create liter Swiss electromechanical better future.