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Magnetic core

About: Magnetic core is a research topic. Over the lifetime, 30011 publications have been published within this topic receiving 155247 citations.


Papers
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Journal ArticleDOI
TL;DR: In this article, a dual-mode non-linear energy harvesting device operating in hardening and bi-stable modes under harmonic excitation is presented. But, the maximum power transfer theory is not applicable for the hardening mode due to occurrence of the...
Abstract: The research trend for harvesting energy from the ambient vibration sources has moved from using a linear resonant generator to a non-linear generator in order to improve on the performance of a linear generator; for example, the relatively small bandwidth, intolerance to mistune and the suitability of the device for low-frequency applications. This article presents experimental results to illustrate the dynamic behaviour of a dual-mode non-linear energy-harvesting device operating in hardening and bi-stable modes under harmonic excitation. The device is able to change from one mode to another by altering the negative magnetic stiffness by adjusting the separation gap between the magnets and the iron core. Results for the device operating in both modes are presented. They show that there is a larger bandwidth for the device operating in the hardening mode compared to the equivalent linear device. However, the maximum power transfer theory is less applicable for the hardening mode due to occurrence of the ...

33 citations

Journal ArticleDOI
TL;DR: In this article, the effect of a closed magnetic core structure on an integrated inductor was investigated by winding two series connected inductors around a stretched hexagonal ring of CoTaZr.
Abstract: The effect of a closed magnetic core structure on an integrated inductor was investigated by winding two series connected inductors around a stretched hexagonal ring of CoTaZr. The 8.5 and 17.5 turn inductors were fabricated using standard silicon process, and simulations were performed using Ansoft HFSS software. The resulting inductance of the device showed no improvement over two inductors without the closed magnetic cores, indicating that the closed core structure was insufficient to enhance the mutual inductance between the two devices. This was attributed to the uniaxial anisotropy of the magnetic film, which prevented the film from routing the generated flux circularly around the core. Therefore, while the physical shape of the magnetic film was closed, the effective magnetic shape maintained an air gap.

33 citations

Journal ArticleDOI
TL;DR: In this paper, a mechanically flexible wireless power transmission module for implantable systems with enhanced transmission efficiency using a closed magnetic circuit (CMC) was presented, which consists of a primary inductor for power transmission and a secondary inductor to power reception.
Abstract: A mechanically flexible wireless power transmission module for implantable systems with enhanced transmission efficiency using a closed magnetic circuit (CMC) is presented. The CMC-based power transmission module consists of a primary inductor for power transmission and a secondary inductor for power reception. The CMC is fabricated by electroplating the Permalloy, composed of 81% nickel and 19% iron, on the inductors. For an open magnetic circuit (OMC), the measured power transmission efficiency was 13% when the distance between the two inductors was 5%mm. However, the efficiency was enhanced to 27% and 34% for the proposed two types of CMCs.

33 citations

Patent
25 Aug 2011
TL;DR: In this article, an embodiment integrated common mode choke comprises a magnetic core, a magnetic plate, a first winding coil and a second winding coil, and the magnetic plate is inserted within an inner circumference of the magnetic core.
Abstract: An embodiment integrated common mode choke comprises a magnetic core, a magnetic plate, a first winding coil and a second winding coil. The magnetic plate is inserted within an inner circumference of the magnetic core. The first winding coil and the second winding coil are wound are wound in the same direction through the magnetic core. The integrated common mode choke is equivalent to a common mode choke and a differential mode choke connected in series. The inductance value of the differential mode choke can be changed by adjusting either the gap between the magnetic plate and the magnetic core or the thickness of the magnetic plate.

33 citations

Patent
Donald S. Gardner1, Gerhard Schrom1, Peter Hazucha1, Fabrice Paillet1, Tanay Karnik1 
30 Jun 2006
TL;DR: An embodiment is a magnetic via that increases the inductance of an integrated inductor or transformer while mitigating eddy currents therein that may limit the operation of the inductor and transformer at high frequency as mentioned in this paper.
Abstract: An embodiment is a magnetic via. More specifically, an embodiment is a magnetic via that increases the inductance of, for example, an integrated inductor or transformer while mitigating eddy currents therein that may limit the operation of the inductor or transformer at high frequency.

33 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202365
2022163
2021309
2020900
20191,254
20181,426