"220V AC Cooling Fan" in the construction of the rotor: the magnet, the blade and the shaft composition; stators: There silicon steel sheet, coil and bearing components; control circuit: "220V AC Cooling Fan" by the IC sensor magnet NS. Pole circuit control via its coil is turned on and generates an internal excitation of the rotor to rotate. Type: axial fans, DC fans. The main component is a fan of: AC motor. "220V AC Cooling Fan" Its working principle is: the coil is energized to rotate in a magnetic field force. Form of energy is transformed: the main electrical energy into mechanical energy, and because the coil has a resistance, so that there is an inevitable part of the electrical energy to be converted into heat.