| 摘要 |
A multilayered electromagnetic assembly. The assembly has a plurality of substantially planar substrate layers, each substrate layer having a cutaway portion. An insulated electrically conductive material is provided, arranged in a spiral configuration on at least two of the substrate layers. The spiral configuration is formed from adjacent the cutaway portion to the edges of the substrate layer. The electrically conductive material is formed substantially on and/or partially recessed or beneath the surface of the substrate layer. The spiral configurations has first and second electrical contacts that are operable to pass electric current to electrical contacts of spiral configurations on other substrate layers. A ferromagnetic core is located through the cutaway portions of the substrate layers. The substrate layers are stacked and an electrical current is passed sequentially through the two or more spiral configurations, thereby generating a magnetic field in the core. |
