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A digital four-arm bridge for the comparison of resistance with capacitance

Published

Author(s)

Yicheng Wang, Stephan Schlamminger

Abstract

A digital four-arm bridge for the comparison of resistance with capacitance has been designed and demonstrated. The digital bridge mimics the classical quad bridge in the digital domain with three balances: the source balance, the detector balance, as well as the main balance. Due to correlation, the required precision of the source voltages is only of the order of the square root of the ultimate bridge precision. For the comparison of a 100 kΩ resistor with a 1 nF capacitor near 1592 Hz the combined standard uncertainty (k = 1) is 5 × 10^−9.
Citation
Metrologia
Volume
61

Keywords

digital bridge, four-arm bridge, quad bridge, impedance comparison, impedance standard

Citation

Wang, Y. and Schlamminger, S. (2024), A digital four-arm bridge for the comparison of resistance with capacitance, Metrologia, [online], https://doi.org/10.1088/1681-7575/ad7590, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=957949 (Accessed December 13, 2024)

Issues

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Created September 11, 2024, Updated November 18, 2024