Patent ID: 9741483
Date: 2017-08-22
CPC Classifications: H01F,H03H

Claim:
1. A noise filter configured to suppress noise generated in a power line or a ground line of a power circuit provided in an electronic device, the noise filter comprising: at least one coil connected to the power line and the ground line; and a core around which the coil is wound, and in which a common core portion for suppressing common mode noise generated at the ground line and a normal core portion for suppressing normal mode noise generated at the power line are formed as a single body with a shared side between the common core portion and the normal core portion; wherein the common core portion is configured as a loop where magnetic flux circulates and includes a first side extending in a first direction and around which a first coil is wound, and a second side which extends in the first direction, is opposite to the first side and faces the first side in a second direction different from the first direction and around which a second coil is wound, wherein the first coil is spaced apart from second coil in the second direction; and the normal core portion is configured as a loop where magnetic flux circulates, and includes an opening opposite to the shared side and where the loop is opened at one side, a third side around which a third coil is wound, and a fourth side which is opposite to the third side and around which a fourth coil is wound.