Abstract: A multi-phase outer-rotor-type variable frequency induction motor for a ceiling fan includes: an outer rotor disposed in a housing that includes a plurality of blade-mounting parts, and including a stator-mounting part that is surrounded by an outer rotor body which is combined with the housing, the outer rotor body being formed with a plurality of slots in which conductive elements are respectively disposed; a stator disposed in the stator-mounting part, and including a central shaft pivotally connected to the housing, a stator core extending in radial directions from the central shaft, and a winding set that is disposed to wind in winding slots formed in the stator core, and that is configured into a multi-phase winding arrangement; and a control unit operable to control frequency of a power signal fed by the control unit to the winding set.

Abstract: A learning method of a remote controller applicable in an electric appliance is disclosed including the following steps: providing a plurality of built-in key codes in a controlled end of an electric appliance; providing users with an operation interface through which users send a specific key code from a new infrared remote controller, and the controlled end displaying the operation interface on a display screen when the specific key code can be identified by the controlled end; users transmitting key codes of the new controller to the controlled end one by one; the controlled end saving the key codes received in its memory device; and the controlled end receiving and saving all the key codes of the new remote controller such that the appliance can be controlled by the new remote controller.