Patent ID: 6690257
Filing Date: 2004-02-10
Classification: H01F,H03H

Abstract:
A common mode choke coil, in which one coil is wound around one half of a toroidal core housed in a bobbin mounted on a base and another coil is wound around the other half thereof such that the both coils are wound equally so that respective magnetic fluxes cancel out each other relative to a normal mode current, and in whichone end part of each of the coils is wound around respective halves of the core leading out toward a portion of the bobbin where the other end part thereof is wound, the base including a plurality of terminals, a plate formed of an insulating material being vertically integrated with the base between the bobbin and the terminals, each coil starting from an outer face of the bobbin, being wound around one half of the bobbin, finishing at an outer face of the bobbin and connecting to one of the terminals through an outer face of the plate, and the one end part being disposed so as to not stay close to the portion of the bobbin where the other end part is wound.