| 摘要 |
PURPOSE:To obtain the current supply lead of compact type and simple constitution at low cost by a method wherein a pair of two poles of positive and negative poles of the current supply lead are arranged concentrically, thereby enabling to neglect the effect of the electromagnetic force generated by a self-conductive current even when a large current is applied. CONSTITUTION:When the positive pole of the power source povided in a normal temperature atmosphere is connected to the electrode plate 13 of an electrode supply lead single pole 1, a current runs to the current supply lead single pole 1, the connected part 7 located on the side of a cryogenic temperature device, the electrode 2 of the current supply lead, and an electrode plate 14 successively through the intermediary of an electrode plate 13, and a closed circuit through which the current is fed back to the power source is constituted. At this time, the magnetic field induced by the current application to the side of the current supply lead single pole 1 is formed into a concentric magnetic field in anticlockwise direction following the law of right-hand thread when the cryogenic temperature device is viewed from about the diagram. Accordingly, the induced magnetic field is formed into the concentric one in reverse direction with each other by arranging the current supply lead electrodes 1 and 2 concentrically as shown in the diagram, and they are eliminated with each other. |
