{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,23]],"date-time":"2026-04-23T02:03:13Z","timestamp":1776909793106,"version":"3.51.2"},"reference-count":15,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2019,4,20]],"date-time":"2019-04-20T00:00:00Z","timestamp":1555718400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>A non-contact current measurement device comprised of a GMR sensor and a ferrite ring core was investigated. The sensor chip employed a high-sensitivity spin-valve full-bridge GMR sensor of which the direct output has non-negligible hysteresis and a limited linear range. By applying an AC modulation current to modulate the output of the GMR sensor, the hysteresis was reduced, and the linear range was over \u00b10.5 A. The resolution for DC and quasi-static current measurement was 0.1 mA at a 10 Hz bandwidth. The output in proportion to the measured current was obtained either by demodulating the current-sensitive AC signal or by employing the filtered output of the intrinsically nonlinear spin-valve response. The proposed current sensing scheme is suitable for quasi-static current measurement from DC to over 100 Hz.<\/jats:p>","DOI":"10.3390\/s19081882","type":"journal-article","created":{"date-parts":[[2019,4,22]],"date-time":"2019-04-22T11:02:53Z","timestamp":1555930973000},"page":"1882","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Quasi-Static Current Measurement with Field-Modulated Spin-Valve GMR Sensors"],"prefix":"10.3390","volume":"19","author":[{"given":"Jen-Tzong","family":"Jeng","sequence":"first","affiliation":[{"name":"Department of Mechanical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 80778, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2738-0678","authenticated-orcid":false,"given":"Xuan-Thang","family":"Trinh","sequence":"additional","affiliation":[{"name":"Faculty of Mechanical Engineering, Hung Yen University of Technology and Education, Hung Yen 160000, Vietnam"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chih-Hsien","family":"Hung","sequence":"additional","affiliation":[{"name":"Graduate Institute of Manufacturing Technology, National Taipei University of Technology, Taipei 10608, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chih-Cheng","family":"Lu","sequence":"additional","affiliation":[{"name":"Graduate Institute of Manufacturing Technology, National Taipei University of Technology, Taipei 10608, Taiwan"},{"name":"Department of Intelligent Automation Engineering, National Taipei University of Technology, Taipei 10608, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2019,4,20]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"125","DOI":"10.1016\/j.sna.2018.07.022","article-title":"Highly sensitive giant magnetoresistance (GMR) based ultralow differential pressure sensor","volume":"280","author":"Borole","year":"2018","journal-title":"Sens. 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