Profile: Sinotech is a manufacturer of motors & mechanical parts. We focus solely on custom engineered components & assemblies, supervising all tooling & production to ensure quality control. Asynchronous & synchronous motors are the two main categories of AC motors. The AC induction motor is a common form of asynchronous motor, and is basically an AC transformer with a rotating secondary. The primary winding (stator) is connected to the power source, and the shorted secondary (rotor) carries the induced secondary current. Torque is produced by the action of the rotor (secondary) currents on the air-gap flux. The synchronous motor differs greatly in design & operational characteristics, and is considered a separate class of AC motor. AC induction motors are the simplest & most rugged electric motors. Our motor consists of two basic electrical assemblies such as the wound stator & the rotor assembly. The AC induction motor derives its name from currents flowing in the secondary member (rotor), that are induced by alternating currents flowing in the primary member (stator). The combined electro-magnetic effects of the stator & rotor currents produce the force to create rotation. Squirrel-cage AC motors are relatively inflexible with regard to speed & torque characteristics, but a special wound-rotor AC motor has controllable speed & torque.