Abstract: A core element for a magnetic component includes a plurality of ferromagnetic sections for conducting a magnetic flux. Adjacent ones of the ferromagnetic sections are connected to each other with ferromagnetic isthmuses keeping the adjacent ones of the ferromagnetic sections a distance apart from each other, and/or the gaps between the ferromagnetic sections are filled with electrically insulating solid material and adjacent ones of the gaps are connected to each other via openings through the ferromagnetic sections and filled with electrically insulating solid material. The ferromagnetic sections can constitute for example a stack of ferromagnetic sheets or a bundle of ferromagnetic filaments. The core element can be manufactured by three-dimensional printing and thus it is possible to make core elements which are not possible or at least not cost effective to be made by shaping ferromagnetic sheets which are originally planar.

Abstract: Method for connecting the conductive surfaces of circuit boards, especially a circuit board equipped with at least two conductive surfaces separated by an insulator layer and with holes, or for creating conductors on a board in a manner that conducts electricity. In the method, a metal or metal alloy, in a powder form, is fed into and the powder is sintered using a laser in order to create a unified conductive structure.

Abstract: The invention relates to a method for machining a material with high-power density electromagnetic radiation. The radiation has its wavelength selected material-specifically, such that the radiation penetrates inside the material without substantial surface absorption. The radiation is focused on a spot inside the material and/or in the proximity of a penetration surface and this spot is moved along a desired machining path. The electromagnetic radiation can be provided by laser light and the focusing can be effected by means of optics. The method is particularly useful in cutting glass and the method offers benefits, including only slight heating of the machined workpiece, smoothness of the fracture plane and no vaporization of harmful alloying elements.