Electrotechnical device for an aircraft, comprising low-frequency coil components

An electrotechnical device for an aircraft comprising:

• an annular housing having a radially internal surface,
• a magnetic circuit formed by a stack of laminated sheets and composed of an annular yoke, said yoke being arranged on the radially internal surface of said housing, at least one portion of a radially external surface of said annular yoke being in contact with the radially internal surface of the housing and said yoke having a radially internal surface,
• at least one low-frequency coil component, said coil component being integrated on at least one portion of the radially internal surface of said yoke,
• wherein the yoke comprises at least one protrusion extending radially from the radially internal surface of said yoke, said protrusion comprises at least one first tooth, said at least one first tooth being a part of the protrusion situated inside said protrusion, at least one coil being integrated on said protrusion around said first tooth, and another part of the protrusion surrounding partially or totally said at least one coil.