We describe a resistance comparator for resistors of equal nominal value, based on a long scale Keysight 3458A digital voltmeter. The resistors under comparison are connected in series and energized by a simple current source which includes a polarity inverter. The voltage drop ratio is measured by the 3458A set for the ratiometer function. The prototype implementation is optimized for measurements of resistors in the 10 kΩ range, including the quantum Hall effect.
A resistance comparator based on a long-scale digital voltmeter / Marzano, Martina; D'Elia, Vincenzo; Ortolano, Massimo; Callegaro, Luca. - (2022), pp. 1-2. (Intervento presentato al convegno 2022 Conference on Precision Electromagnetic Measurements (CPEM) tenutosi a Wellington, New Zealand nel 12-16 December 2022).
A resistance comparator based on a long-scale digital voltmeter
Martina Marzano
;Vincenzo D’Elia;Massimo Ortolano;Luca Callegaro
2022
Abstract
We describe a resistance comparator for resistors of equal nominal value, based on a long scale Keysight 3458A digital voltmeter. The resistors under comparison are connected in series and energized by a simple current source which includes a polarity inverter. The voltage drop ratio is measured by the 3458A set for the ratiometer function. The prototype implementation is optimized for measurements of resistors in the 10 kΩ range, including the quantum Hall effect.| File | Dimensione | Formato | |
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