Core laminations, particularly for transformers

Core laminations forming an iron core, particularly for transformers, comprising a plurality of said core laminations stacked alternatingly reversed, said core laminations provided with legs having a maximum of three parallel spaced legs of equal length and of substantially equal width and two yokes connecting the ends of said legs, joints being provided, one each between one end of each leg and the adjacent yoke for insertion of the windings into winding spaces, and the width of the jointlessly connecting yoke being greater than the parted yoke, wherein the width (c.sub.1) of the jointlessly connecting yoke (5) is at least 1.2 times, and at most 1.7 times, the width (f) of each leg (1,2 or 3) and wherein the width (c.sub.2) of the parted yoke (4) is at least 1.1 times, and at most 1.3 times, the width (f) of each leg (1,2 or 3), such that the width (c.sub.1) of the jointlessly connecting yoke (5) minus the width (c.sub.2) of the parted yoke (4) is at least 0.1 times, and at the most 0.4 times, the width (f) of each leg (1,2 or 3) (1.2f.ltoreq.c.sub.1 .ltoreq.1.7f and 1.1f.ltoreq.c.sub.2 .ltoreq.1.3f and 0.1.ltoreq.c.sub.1 -c.sub.2 .ltoreq.0.4f, and wherein in said plurality of said laminations alternatingly reversed the inside edges of said parted yoke are spaced away from said winding spaces in contrast to the inside edges of said jointlessly connecting yoke, with the inside edges of said parted yoke spaced from the inside edges of said jointlessly connecting yoke and the jointlessly connecting yoke inner edges nearer the winding spaces than the inside edges of said parted yoke, and said joints are located inside the yokes of said core.