| 摘要 |
PURPOSE:To apply large magnetic flux to the core of a magnetic head, by connecting both end parts of one, pair of spiral coils which are not connected to each other to the bonding pads respectively on the rear of a magnetic substrate through the substrate. CONSTITUTION:In the surface of a magnetic substrate 21, one pair of spairal coils 22 are formed in the groove and so connected at respective one ends each other as to cause the respective currents to flow in reverse rotation each other. And, in respective the other ends 23 of the one pair of coils 22 which are not connected each other, throughholes 24 are respectively bored through the substrate 21. Moreover, two bonding pads 25 are so formed respectively on the rear of the substrate 21 as to correspond to the holes 24. Now, the one pair of coils 22 and pads 25 are connected each other through the holes 24. Accordingly, both the pads 25 are energized and current is caused to flow each of the coils 22 to cause a large magnetic flux. |
