MAGNETIC CORE Russian patent published in 2021 - IPC H01F27/245 

FIELD: electrical engineering.

SUBSTANCE: invention relates to the field of electrical engineering, namely to a magnetic core, and can be used in the manufacture of a transformer. When the end surfaces of the plurality of plates of soft magnetic material are joined together, they bend in a portion constituting the corner portion of the core, causing the position of the end surfaces to be displaced from the desired position. To achieve the technical result in the area of the window part, which is the area in the first area (110) and the second area (120), there is a third area (130), the length of which in the longitudinal direction (in the direction along the X axis) is identical to the length of the window part in the X direction at the position, in which the third portion (130) is located so that it contacts the area of the inner peripheral surface between the first corner portion (101) and the third corner portion (103). Accordingly, such a structure prevents the locations from being displaced from the desired positions, thereby preventing deformation of the magnetic core (100) and preventing the core loss from increasing.

EFFECT: prevention of displacement of the positions of the end surfaces of the core relative to the end sections.

6 cl, 37 dwg, 5 tbl