Current sensor application of asymmetric giant magnetoimpedance in amorphous materials

摘要

The performance of the current sensor based on giant magnetoimpedance (GMI) effect in amorphous ribbon has been tested. The toroidal-type ribbon after field annealing shows a maximum GMI ratio of 16% at 100 kHz measuring frequency with corresponding field sensitivity of 35% Oe(-1). The sensor output voltage increases with applied current up to 1 A with a good linearity. The sensor performance for DC current is better than that for AC current. (C) 2003 Elsevier Science B.V. All rights reserved. [References: 7]