| 摘要 |
<p>PURPOSE:To enable crosstalk to be reduce even in the case of a small size by constituting the part excepting the neighborhood of the winding grooves of the rotary transformer cores of the normal temperature superconductor. CONSTITUTION:In a rotary transformer transferring a signal between the solid part side and the rotary part side, the part excepting the neighborhood 14 of the winding grooves of the rotary transformer cores 11a and 11b are constituted of the normal temperature superconductor. For example, three pieces of circular winding grooves 12a-12c and 12d-12f are concentrically formed respectively on a pair of rotary transformer cores 11a and 11b opposing while being fixed to a rotary cylinder and a lower part cylinder respectively of a VTR rotary transformer. The neighborhood 14a-14f of these winding grooves 12a-12f is constituted of a material having high magnetic permeability such as ferrite respectively, while the rotary transformer cores 11a and 11b of the other parts are constituted with the normal temperature superconductor. The windings 13a-13c and 13d-13f are wound about the winding grooves 12a-12c and 12d-12f respectively.</p> |
