| 摘要 |
PURPOSE:To decrease the quantity of the magnetic fluxes passing the gap part of a magnetic core and to greatly improve electromagnetic conversion efficiency by setting the direction of the axis of easy magnetization in the gap part at the normal direction of the gap plane and the direction of the axis of easy magnetization of the other parts in parallel with the track width. CONSTITUTION:The direction of the axis of easy magnetization of the cores in the head gap part of the upper magnetic core 1 and the lower magnetic core 1' is aligned to the normal direction of the plane of the gap 2. The direction of the axis of easy magnetization in the other parts is paralleled with the track width direction. The direction of the axis of difficult magnetization in the gap part is, therefore, paralleled with the gap plane and is deviated largely from the flow direction of the magnetic fluxes. The magnetic permeability is thus extremely decreased. The direction of the axis of difficult magnetization in the parts except the gap part aligns to the flow direction of the magnetic fluxes and the magnetic permeability is extremely increased. As a result, the ratio of the quantity of the magnetic fluxes passing the gap part is considerably lowered and the electromagnetic conversion efficiency is greatly improved. |
