Magnetic position sensor with Hall-element.

摘要

The sensor includes a yoke (2) of e.g. soft iron with a flange (4) for coupling to a rotary shaft (1). A tubular portion (3) in which a radially magnetised permanent magnet (5) is fixed is also provided. The yoke and magnet rotate together around a fixed stator (6) with a central hole (7) and a sec. air gap contg. a Hall probe (9). The magnet has a North-seeking pole on the outside of one half and another North-seeking pole on the inside of its other half.