| 摘要 |
PURPOSE:To obtain a coil suitable for driving a magnetic bubble memory of which inter-layer floating capacity and high frequency loss are reduced by inserting an insulating sheet between the layers of a multi-layer winding coil. CONSTITUTION:The insulating sheet 11 is inserted between the layers of the multi-layer winding coil 10. It is preferable to use low di-electric material for the insulating sheet 11. It is also applicable to use an insulating sheet having penetration holes or a mesh-like insulating sheet to increase the area of an air gap between layers. For example, the insulating sheet 11 consisting of ''Mylar '' or the like which has the external appearance shown in the figure is inserted between the coil part 12 of the 1st layer and the coil part 13 of the 2nd layer of the 2-layer winding coil 10. |
