| 发明名称 | Device and manufacturing method for a direct current filter inductor | ||
| 摘要 | The device and manufacturing method for a Direct Current (DC) filter inductor are disclosed. The device comprises a magnetic core, at least one first winding and at least one second winding. The magnetic core has at least one air gap. The first winding and the second winding are connected to each other in parallel that having a mutual inductance, and are wrapped around the magnetic core respectively. A difference between a first inductance of the first winding and the mutual inductance is smaller than a difference between a second inductance of the second winding and the mutual inductance. A Direct Current (DC) resistance of the first winding is larger than a DC resistance of the second winding. The first winding is closer to the air gap compared to the second winding. | ||
| 申请公布号 | US8922316(B2) | 申请公布日期 | 2014.12.30 |
| 申请号 | US201213592579 | 申请日期 | 2012.08.23 |
| 申请人 | Delta Electronics (Shanghai) Co., Ltd. | 发明人 | Lu Zengyi |
| 分类号 | H01F17/06;H01F27/24;H01F17/04;H01F17/00;H01F3/14 | 主分类号 | H01F17/06 |
| 代理机构 | Morris, Manning & Martin, LLP | 代理人 | Xia, Esq. Tim Tingkang;Morris, Manning & Martin, LLP |
| 主权项 | 1. A device for a direct current filter inductor, comprising: a magnetic core having at least one air gap; and at least one first winding and at least one second winding, which are connected to each other in parallel that having a mutual inductance, and are wrapped around the magnetic core respectively, wherein a difference between a first inductance of the first winding and the mutual inductance is smaller than ⅓ of a difference between a second inductance of the second winding and the mutual inductance; a Direct Current (DC) resistance of the first winding is larger than a DC resistance of the second winding; and the first winding is closer to the air gap compared to the second winding. | ||
| 地址 | Shanghai CN | ||