A FAIL-SAFE THIN-FILM CURRENT SENSOR USING A FLUX SATURABLE RING CORE

Authors
FUJIYAMA Y YAMADA Y KIKUCHI H YAMAGUCHI M ARAI KI
Citation
Y. Fujiyama et al., A FAIL-SAFE THIN-FILM CURRENT SENSOR USING A FLUX SATURABLE RING CORE, IEEE transactions on magnetics, 33(5), 1997, pp. 3406-3408
Citations number
4
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied
Journal title
IEEE transactions on magnetics → ACNP
ISSN journal
00189464
Volume
33
Issue
5
Year of publication
1997
Part
1
Pages
3406 - 3408
Database
ISI
SICI code
0018-9464(1997)33:5<3406:AFTCSU>2.0.ZU;2-G
Abstract
We have developed a fail-safe thin-film current sensor using a flux sa turable ring core. The sensor consists of a transformer unit composed of a saturable core, primary and secondary coils, and a load coil whic h surrounds the transformer unit. The sensor is suitable for the purpo se of a fail-safe system. The chip size is 4mm x 4mm. A transmission e fficiency of 60% was obtained when the carrier signal was 3Vpp-1MHz si ne wave. The secondary voltage of the sensor successfully dropped by 9 0% when a 100mA load current was applied to 20-turn load coil.