
A common mode inductor has a very small size and high reliability, and is constructed such that it can be inexpensively manufactured, and, when inserted to an electronic circuit, the dc resistance of the coils of the in-phase inductor has little or no effect on the electronic circuit. The common mode inductor has a laminated structure including at least four coils each having coil conductors and insulating sheets. The first and second coils are electrically connected in series so as to define a ...











