用于比较电阻和电容的数字四臂电桥

IF 2.1 3区工程技术 Q2 INSTRUMENTS & INSTRUMENTATION Metrologia Pub Date : 2024-09-10 DOI:10.1088/1681-7575/ad7590

Yicheng Wang and Stephan Schlamminger

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引用次数: 0

摘要

我们制作并演示了用于电阻与电容比较的数字四臂电桥。数字四臂电桥在数字域模仿了经典的四臂电桥，具有三个平衡：源平衡、检测器平衡和主平衡。由于相关性，对源电压精度的要求仅为最终电桥精度平方根的数量级。对于 100 kΩ 电阻器与 1 nF 电容器在 1592 Hz 附近的比较，综合标准不确定度为 .

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

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 is .

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来源期刊

Metrologia 工程技术-物理：应用

CiteScore

2.80

自引率

25.00%

发文量

137

审稿时长

12 months

期刊介绍： Published 6 times per year, Metrologia covers the fundamentals of measurements, particularly those dealing with the seven base units of the International System of Units (metre, kilogram, second, ampere, kelvin, candela, mole) or proposals to replace them. The journal also publishes papers that contribute to the solution of difficult measurement problems and improve the accuracy of derived units and constants that are of fundamental importance to physics. In addition to regular papers, the journal publishes review articles, issues devoted to single topics of timely interest and occasional conference proceedings. Letters to the Editor and Short Communications (generally three pages or less) are also considered.