Patent ID: 8354910
Filing Date: 2013-01-15
Classification: H01F,H03H

Abstract:
1. A coil block comprising: a first coil; a second coil; a core having an intermediate layer for separating the first coil and the second coil from each other; and a shield for shielding the first coil, the second coil, and the intermediate layer; wherein the first coil and the second coil have the same winding direction, wherein the shield is attached to an upper plate provided on the core, wherein an area of the upper plate is larger than an area of a lower plate provided on the core, and wherein if directions of current being applied to the first coil and the second coil are different from each other, a direction of a magnetic force induced by the first coil is equal to a direction of a magnetic force induced by the second coil, and if a direction of current being applied to the first coil and the second coil are the same, a part of the magnetic force generated by the first coil is interrupted by the intermediate layer and a part of the magnetic force generated by the second coil is interrupted, another part of magnetic forces generated by the first coil and the second coil are applied in a space between the shield and the intermediate layer so that the part of the magnetic force from the first coil and the part of the magnetic force from the second coil are offset in the space.