摘要 |
A Wiegand wire forms part of a stator coil facing a rotor on which permanent magnets are located. The stator coil has two coil portions or coil sections which are wound or connected to provide opposing inductive outputs upon passage of the magnets in front of the coils to cancel each other, the Wiegand wire change of magnetization providing the additional read-out output, the amplitude of which will be independent of speed, but the recurrence rate will depend upon speed of the magnets passing the stator of transducer. |