IRON CORE FOR HIGH FREQUENCY

摘要

PURPOSE:To obtain a high frequency iron core which has highly saturated magnetic flux density and less eddy current loss by forming a long and narrow flexible iron core bundling plural elementary wires made of a ferromagnetic material the surface of which is electrically insulating in a circular or square shape which has the same cross section area to the corresponding laminated thin plate iron core. CONSTITUTION:An iron core 10 for high frequency is made of two same shape iron cores 1 placed face to face and is made nearly a ring shape connecting both the end surfaces of the iron cores. That is, the two iron cores 1 are made of bundled plural elementary wires 2 of a ferromagnetic material covered with an electrically insulating material and bended to the direction of the axis in nearly a U-shape. The elementary wires 2 of the two iron cores 1 are also bundled to form a square in their cross section and one iron core 1 is wound with a winding 4 supported by a bobbin 3 at both the ends. By using the bundled plural ferformagnetic material elementary wires, an iron core for high frequency which has high relative permeability or highly saturated magnetic flux density can be made and the selective range of the material is also wide due to use of a wire material.