| 摘要 |
A switching apparatus is proposed having at least one Wiegand wire (12) mounted on a stator (10) and at least two permanent-magnet pole pairs (16), which are mounted on a rotor (15) and are moved past the Wiegand wire (12) when the rotor (15) rotates, and in each case produce an electrical pulse, which is used as a control pulse, in a receiving coil (13) which encloses the Wiegand wire (12). The axis of the Wiegand wire (12) is in this case arranged in a plane running at right angles to the rotor shaft, and the axes of the permanent-magnet pole pairs (16) are arranged in a plane running parallel to this plane, these two planes being closely adjacent. The axes of the Wiegand wire (12) and of the permanent-magnet pole pairs (16) project radially from the rotor axis. <IMAGE>
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