Vacuumschmelze Gmbh & Company Kg

Wulf Guenther

Joerg Petzold

Detlef Otte

Harald Hundt

Herbert Hein

Achim Kipper

Matthias Reidel

A current transformer core has a ratio of the core outside diameter Dto the core inside diameter Dof &#x3c;1.5, a saturation magnetostriction &#x3bb;of =|4| ppm, a circular hysteresis loop with 0.50=Br/Bs=0.85 and an H=20 mA/cm. The current transformer core is made of a soft magnetic iron alloy in which at least 50% of the alloy structure is occupied by fine-crystalline particles with an average particle size of 100 nm or less, and the iron-based alloy comprises, in essence, one combination.

Current transformer cores formed from magnetic iron-based alloy including final crystalline particles and method for producing same

A magnetic core () for a magnetic component has a longitudinal axis parallel to which a magnetic current is to be substantially guided inside the magnetic core. The magnetic core consists of a plurality of magnetic elements () shaped like bars or strips arranged parallel to one another, at least one of the magnetic elements () is different from the other magnetic elements in one or several of the following characteristics: permeability of material, curvature, length, shape and/or size of surface area, presence, type and location of notches in the magnetic elements.

Magnetic core

An antenna arrangement for the inductive transmission of energy has magnetic cores made of a composite material with amorphous or nanocrystalline flakes and a moulded plastic material, so that the magnetic properties suitable for effective energy transmission can be adjusted at the same time as high security against fracture and a small overall height are achieved.

Antenna arrangement for inductive power transmission and use of the antenna arrangement

A highly bendable antenna core () which is highly bendable for high-frequency identification systems substantially retains its soft-magnetic properties when bending occurs. The antenna core is produced by using specific amorphous or nanocrystalline alloys having a very low magnetostriction value. The antenna core () is embodied in the form of a laminate with/or without insulating layers placed therebetween. An antenna can be provided with one such antenna core.

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Maintal, Germany

Wulf Guenther