A digital four-arm bridge for the comparison of resistance with capacitance
Year: 2024
Type: article
Abstract: We have built and demonstrated a digital four-arm bridge for the comparison of resistance with capacitance. The digital four-arm 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 .
Source: Metrologia
Authors: Yicheng Wang, Stephan Schlamminger
Institution: National Institute of Standards and Technology
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,165
OpenAlex ID: W4402029835