What is a DC Fan operating principle ?

According to Ampere's right-hand rule, the current through the conductor around a magnetic field, if this conductor is placed in another fixed magnetic field, the attraction or repulsion will be generated, resulting in moving objects. In "DC Fan" internal blades, attached to a pre-filled with the magnetic rubber magnets. Surrounded by silicon, axial part winding two coils and a Hall sensor component as a synchronous detection device, a control group of circuit which makes two sets of coils wound around the axis of rotation job. Silicon have different magnetic poles, the poles and the rubber suction magnet repulsion. When the suction fan lice repulsion greater than the static friction, the natural rotation of the blades. Since the Hall sensor component provides a synchronization signal, the fan was able to continue to operate, as its running direction, decided to follow the right hand rule Fleming.