公开(公告)号：US20210020351A1

公开(公告)日：2021-01-21

申请号：US16924687

申请日：2020-07-09

Applicant: SUMIDA CORPORATION

Inventor： Akira TAKEUCHI

IPC: H01F27/26 ,  H01F27/28 ,  H01F41/02 ,  H01F41/064

Abstract: A pair of iron-based E-shaped cores 101A and 101B is disposed so that middle leg core parts 101A3 and 101B3 abut against each other, and coils 103A and 103B are respectively attached to the middle leg core parts 101A3 and 101B3 in a winding state. Furthermore, when a cross-sectional area of the middle leg core part 101A3 or 101B3 orthogonal to an extending direction thereof is Si, and a cross-sectional area of an outer leg core part 101A1, 101B1, 101A2, or 101B2 orthogonal to an extending direction thereof is So, a conditional expression (1) below holds. 1.0≤Si/So≤5.0  (1)