| 摘要 |
A self-rotating enclosure ( 6 ) containing an electric motor ( 4 ) particularly suited for use in very low power and low speed applications, including a counter-torque producing magnet ( 34 ). The motor comprises magnets (M 3, M 4 ) which generate magnetic fields to interact with currents in coils of wire (C 2, C 3 ) to generate relative rotational motion between an armature assembly ( 2 ) and the motor case ( 4 ). A shutter ( 36 ) with a window (W 1 ) controls light incident on photoresistor (P 1 ) to energize a coil, (C 2 ), and similarly other photoresistors control other coils to cooperatively generate relative rotation. The preferred embodiment uses photovoltaic cells ( 30 ) to provide the electric current.
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