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公开(公告)号:US20170140869A1
公开(公告)日:2017-05-18
申请号:US15310308
申请日:2015-05-22
IPC分类号: H01F38/14 , H01F27/32 , H02J50/05 , H01F27/28 , H01F27/36 , H02J50/10 , H01F27/24 , H01F27/00
CPC分类号: H01F38/14 , H01F27/004 , H01F27/24 , H01F27/2895 , H01F27/323 , H01F27/36 , H01F38/18 , H02J50/05 , H02J50/10
摘要: Described is a working unit (1) comprising a stationary part (2) and a movable part (3) and a movable working device (4) defining an electrical user device, powered by a stationary electricity supply (5A) through a first contactless electricity supply line (L1), defined by a rotary transformer; the working unit (1) also comprises a control element (12), movable as one with the working device (4) and designed to vary a relative electrical property as a function of a parameter relative to the working device (4); the control element (12) is powered, at least temporarily, independently from the electricity supply of the working device (4).