Now showing items 1-10 of 13
A Fluxgate Current Sensor With an Amphitheater Busbar
Large dc and ac electric currents are often measured by open-loop sensors without a magnetic yoke. A widely used configuration uses a differential magnetic sensor inserted into a hole in a flat busbar. The use of a ...
Effect of Stress Induced Anisotropy on the Noise of Ring-core Fluxgate
In this paper we show how an anisotropy perpendicular to the direction of excitation is favourable to obtain low noise in fluxgate sensors. We produced ring cores by electroplating NiFe thin film (6 μm) over a bended copper ...
Fluxgate Offset Study
Offset and its long-term stability is a weak point of fluxgate sensors. Even the ultrastable sensors kept at no vibrations and stable temperature at magnetic observatories show offset drift. Such drift of the fluxgate ...
Influence of Magnetostriction of NiFe Electroplated Film on the Noise of Fluxgate
We electroplated NiFe thin-film over a copper layer using different current density. Magnetostriction is changed from negative to positive values, with minimum magnetostriction found at around Fe19Ni81 composition. When ...
Multiwire Core Fluxgate
(Elsevier Science, 2009)
Multiwire core fluxgate has higher sensitivity due to the higher cross=sectional area of the core
Magnetostriction Offset of Fluxgate Sensors
Magnetostriction Offset of Fluxgate Sensors: we examined the origoins of offset both theoretically an experimentally
A 3-Phase Current Transducer based on microfluxgate sensors
Novel 3-phase DC/AC current transducer for 3-phase current lines is based on 8 integrated fluxgate sensors. Using full information from each sensor rather than gradiometric pairs, we suppress crosstalk between individual ...
Field Annealed Closed-path Fluxgate Sensors Made of Metallic-glass Ribbons
(Elsevier Science, 2012)
One-step field annealing of Co-based metallic glass was chosen to acquire low-magnetostrictive material with anisotropy required to reduce noise by favoring magnetization rotation. Despite the risk of bending stress ...
Contribution to the Ring-Core Fluxgate Theory
(The Royal Swedisch Academy of Sciences, 1989)
Existing theories for open-core fluxgate are not fitting experimental results in the case of ring-core sensors. Simple description based on transfer functions which takes into account the interaction between two half-cores ...
Three-Phase Busbar Current Transducer
A true three-phase 1000 A busbar current transducer is based on six micro-fluxgate sensors. Instead of using three independent single-phase current transducers, we use the full information from each sensor. Two TI DRV425 ...