| 摘要 |
<p>PURPOSE:To eliminate concentrically circular grooves and to enhance mechanical strength and utility efficiency of a material by forming at least one of a laminated layer rotor and a laminated layer stator of an alternate laminate of concentrically circular nonmagnetic layers and concentrically circular linear conductor layers. CONSTITUTION:A rotary transformer 20 is formed of a rotor 21 rotating around a central axis 23 together with three rotary magnetic heads and a stator 22 opposed to the rotor. The rotor 21 has a magnetic core 24 having a cylindrical step 36, a plurality of concentrically circular nonmagnetic units 25 formed on the opposed surface of the core to the stator at the axis 23 as a center, a concentrically circular conductor coil 26, and a conductor short-circuiting ring 28. Both ends of the coil 26 are connected to terminal electrodes 29 through a pair of lead conductors 38, 39. The coil 26, the ring 28 and the units 25 are formed as alternate laminate of a plurality of conductor layers and nonmagnetic layers, and the core 24 is formed as the laminate of the magnetic layers. A conductor coil 32, a short-circuiting ring 34 and a nonmagnetic unit 31 are formed as alternate laminate of a plurality of conductor layers and nonmagnetic layers.</p> |
