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Resistors C5-60 in metrological practice: experience of use
https://doi.org/10.32446/0368-1025it.2023-5-47-51
Abstract
The search for new types of resistors that could potentially be used for long-term storage of electrical resistance values with the highest attainable accuracy has always been an urgent task of metrology. In this paper, we have studied the problem of choosing a resistor for transmitting and storing a unit of electrical resistance when creating an ohm standard based on the quantum Hall effect in the time interval between reproductions of a unit. The choice of resistors of the C5-60 type, which were not originally intended for use as standards of higher levels of the electrical resistance verifi cation circuit, is justifi ed. In 1990–2022 detailed experimental studies, including studies of long-term stability, of C5-60 type resistors have been carried out. Some of the investigated resistors are included in the State secondary standard of electrical resistance unit in the range of values from 0.1 Ohm to 13 kOhm based on the quantum Hall effect. Comparisons of the investigated resistors with resistance measures traditionally used to create standards for the unit of electrical resistance are carried out. It has been established that C5-60 resistors have a low temperature coeffi cient of resistance, they are easy to thermostat without a temperature-controlled oil bath. The long-term stability of the C5-60 resistors turned out to be uniquely high and allows these resistors to be used as standards for storing a unit of electrical resistance.
About the Author
S. G. Semenchinskiy
Russian Research Institute for Metrological Service
Russian Federation
Russian Federation
Sergey G. Semenchinskiy
Moscow
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Review
For citations:
Semenchinskiy S.G. Resistors C5-60 in metrological practice: experience of use. Izmeritel`naya Tekhnika. 2023;(5):47-51. (In Russ.) https://doi.org/10.32446/0368-1025it.2023-5-47-51
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