| 摘要 |
PURPOSE:To form the thin film coil of a small conductor resistance and the core of a satisfactory magnetic characteristic and to improve a C/N and picture quality by improving the shape and structure of the core and coil. CONSTITUTION:A coil 4 is arranged under two spiral coils to be serially connected so that a magnetic flux can be excited in a same direction in magnetic cores 2-1, 2-2, 3-1 and 3-2. Joining parts 7-1 and 7-2 of the cores are respectively arranged in the center of the two spiral shapes of the coil 4 so that the positiones of these joining parts 7-1 and 7-2 can be magnetically symmetric on the magnetic core when they are observed from a magnetic gap 6. Accordingly, a distance between the cores is increased and a leaking magnetic flux is decreased. Then, the conductor resistance and impedance noise can be reduced. Thus, the picture quality and a head output are prevented from being lowered and the C/N and picture quality can be improved. |
