EDP Sciences Journals List
Issue J. Phys. IV France
Volume 07, Number C1, Mars 1997
7th INTERNATIONAL CONFERENCE ON FERRITES
Page(s) C1-163 - C1-164
DOI http://dx.doi.org/10.1051/jp4:1997159

7th INTERNATIONAL CONFERENCE ON FERRITES

J. Phys. IV France 07 (1997) C1-163-C1-164

DOI: 10.1051/jp4:1997159

Compound Magnetic Wire Sensor Assembling Cylindrical Ba Ferrite Magnet

A. Matsushita, T. Ikenaga and S. Abe

Department of Electrical Engineering, Kanagawa University, 3-27 Rokkakubashi, Yokohama 221, Japan


Abstract
A new type of the compound magnetic wire sensor is developed. A search coil is wound around the wire which has a uniaxial magnetic anisotropy along the axis direction of the wire. In order to apply a negative magnetic field to the wire, two pieces of cylindrical Ba ferrite magnets are appended at the both ends of the wire. The sensor induces a constant pulse voltage of about 0.7 mV/turn which is independent of the changing rate of the positive external exciting field. The sensor consisted of the compound magnetic wire and 3000 turns search coil induces a stable output voltage of about 2V. It is also advantageous that this simple-structure sensor can be fabricated at a low cost.



© EDP Sciences 1997