Increased Accuracy for Resistance Measurements
- 1 January 1966
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Instrumentation and Measurement
- Vol. 15 (4) , 220-226
- https://doi.org/10.1109/TIM.1966.4313543
Abstract
The effect of power dissipation on the performance of four-terminal standard resistors has been investigated, using the direct-current-comparator ratio bridge. A theoretical analysis of a typical standard resistor has also been made, which indicates that the average temperature increase of the resistance wire in an oil-filled resistor is approximated by T - T = RI2[6(1-e0.001t)+1] and that the Peltier effect at the copper-manganin junctions may contribute errors of 1 to 10 parts per million of resistance for the lower-valued resistors. Recommendations are made for design and construction changes in standard resistors, which will improve the accuracy with which they may be used.Keywords
This publication has 3 references indexed in Scilit:
- Accurate determination of resistor load correctionsProceedings of the Institution of Electrical Engineers, 1966
- A Direct-Current-Comparator Ratio Bridge for Four-Terminal Resistance MeasurementsIEEE Transactions on Instrumentation and Measurement, 1966
- Precision resistance measurement using very low-frequency alternating currentProceedings of the Institution of Electrical Engineers, 1965