A new generation of digital multimeters was used to compare the ratios of the resistances of wire-wound reference resistors and quantized Hall resistances (QHRs). Specifically, a digital multimeter was used to compare the DC voltage ratio of a QHR sample with that of a reference resistor connected in series with the sample. The accuracies are better than 0.1 ppm for ratios as large as 4:1 if the multimeters are calibrated with a Josephson array.
|Number of pages||2|
|Journal||CPEM Digest (Conference on Precision Electromagnetic Measurements)|
|State||Published - Jun 1990|
|Event||1990 Conference on Precision Electromagnetic Measurements - Ottawa, Ont, Can|
Duration: Jun 11 1990 → Jun 14 1990