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Rotational sensor including axially adjacent targets one of which having invariant permeability the other having varying permeability as they rotate
Rotational sensor including axially adjacent targets one of which having invariant permeability the other having varying permeability as they rotate
A rotation sensor has a target wheel including first and second tracks and a dual-element magnetoresistive sensor. Each individual magnetoresistive element is aligned with a respective track of the target wheel to provide substantially inverse resistive changes with the passage of the wheel. One of the tracks is characterized by alternating high and low permeability, such as by a toothed section, and the other of the tracks is characterized by invariant permeability.
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