2024
DOI: 10.1088/1361-6501/ad457a
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Dual-range TMR current sensor based on magnetic shunt/aggregation effects utilizing single magnetic ring structure

Ru Bai,
Boyan Li,
Jiakun Tu
et al.

Abstract: In this paper, we propose and design a novel dual-range Tunnel Magnetoresistance (TMR) current sensor with a single magnetic ring structure. This design incorporates two distinct magnetic guiding effects, namely magnetic shunt and magnetic aggregation, within the same magnetic ring. By integrating a high-sensitivity TMR sensor chip with a closed-loop feedback circuit, we achieve a TMR current sensor with excellent linearity, high resolution, as well as high frequency response. The magnetic ring structure is fi… Show more

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