CRITICAL CURRENT MEASURING DEVICE FOR SUPERCONDUCTOR

摘要

The apparatus for measuring the critical current of 6 specimens simultaneously under 4.2 K degree and super magnetic field with 4 terminal method includes a DC power supplier(1), a current switch(4) switching the current to desired specimen, a voltage detector(16) detecting the voltage with a shunt resister(2), a D/A converter(17) controlling the current of the DC power supplier, a specimen holder(6), a computer(15) controlling the current and voltage with received digital signal, a cryogenic vessel(7) storing liquid helium, and a super conductive magnet(8).