Patent ID: 8441247
Filing Date: 2013-05-14
Classification: G01R

Abstract:
1. A continuous critical current measurement apparatus for measuring a critical current of a superconducting tape while feeding the superconducting tape in a liquid nitrogen container, comprising: first and second wheel-type current terminals for transmitting a current to the superconducting tape; and first and second wheel-type voltage terminals for measuring voltages at the superconducting tape, wherein the superconducting tape is continuously supplied and fed by a reel-to-reel device, and the critical current of the superconducting tape is measured in real time using the first and second wheel-type current terminals and the first and second wheel-type voltage terminals while the superconducting tape is fed at constant linear velocity in contact with the first and second wheel-type current terminals and the first and second wheel-type voltage terminals, wherein each of the first and second voltage terminals comprises an inside voltage terminal disposed inside a corresponding current terminal with respect to a feeding path of the superconducting tape and an outside voltage terminal disposed outside the corresponding current terminal with respect to the feeding path, such that said measuring the voltages is enabled to an entire length of the superconducting tape between the two outside voltage terminals.