| 摘要 |
A tubular motor including a driving systen and a winch mechanism enclosed within a common tubular housing, the driving system including a DC motor and a unitary power supply, the unitary power supply being electrically connectable to an AC electricity source external to the housing and to the DC motor within the housing, and being adapted to convert AC electricity supplied by the AC electricity source into low voltage direct current electricity suitable for the DC motor, by transformation and rectification. The winch mechanism is coupled to and driven by the DC motor.
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