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0.1 PPM FOUR-TERMINAL RESISTANCE BRIDGE FOR USE WITH A DILUTION REFRIGERATOR.

Author(s) : EDMUNDS D. L., PRATT W. P. Jr

Type of article: Article

Summary

THE AA. PRESENT A TESTED DESIGN FOR A BRIDGE WHICH IN SEVERAL SIGNIFICANT RESPECTS IS SUPERIOR TO PREVIOUS ONES. AT ULTRALOW TEMPERATURES IT PERMITS THE MEASUREMENT OF RESISTANCE TO 0.1 PPM IN RESISTORS FROM ABOUT 1 MILLIOHM TO 0.1 MICROOHM, OR LOWER. INDEED, RELATIVELY -HIGH PRECISION MEASUREMENTS CAN BE MADE OVER THE WHOLE TEMPERATURE RANGE FROM ABOUT 20 MK TO NEAR 7 K. FINALLY, A NEW TECHNIQUE IS DEVELOPED WHICH ELIMINATES MOST OF THE PROBLEMS OF MAKING A COMPARISON (OR STANDARD) RESISTOR AND AT THE SAME TIME ELIMINATES THE NECESSITY OF AN EXTRAPOLATION TO ZERO TEMPERATURE IN ORDER TO OBTAIN AS IS CONVENTIONALLY DONE.

Details

  • Original title: 0.1 PPM FOUR-TERMINAL RESISTANCE BRIDGE FOR USE WITH A DILUTION REFRIGERATOR.
  • Record ID : 1981-1073
  • Languages: English
  • Source: Rev. sci. Instrum. - vol. 51 - n. 11
  • Publication date: 1980/11
  • Document available for consultation in the library of the IIR headquarters only.

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