Magnetic transducer and proximity detection device...

G - Physics – 08 – C

Patent

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340/124.3

G08C 21/00 (2006.01) G01R 33/02 (2006.01)

Patent

CA 1145009

ABSTRACT OF THE DISCLOSURE A magnetic transducer utilizes the magnetostrictive effect for creating an easy axis of magnetization in the longitudinal axis of a magnetic wire having a high cobalt content by bending said wire, which is then placed in a non-magnetic hollow tube within which the two ends of the wire engage with one another; this tube is placed in the axis of a detection coil and the application of a magnetic field, alternately in one direction and the other in the longitudinal axis of the assembly creates a flux variation due to the magnetization change in the easy axis; the pulses detected have a high amplitude and a low rise time; such a magnetic transducer can be used, more particularly for proximity transducers for elements in translation or in rotation, for example for motors.

351844

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