Settling Behavior of the Bridge Voltage in Resistance Ratio Measurements With Cryogenic Current Comparators

被引：6

作者：

Goetz, Martin ^{[1
]}

Drung, Dietmar ^{[2
]}

Pesel, Eckart ^{[1
]}

Ahlers, Franz-Josef ^{[1
]}

机构：

[1] Phys Tech Bundesanstalt, D-38116 Braunschweig, Germany

[2] Phys Tech Bundesanstalt, D-10587 Berlin, Germany

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2011年 / 60卷 / 07期

关键词：

Current comparators; noise; resistance measurements; transient analysis;

D O I：

10.1109/TIM.2010.2100690

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Along settling time of the bridge voltage in resistance comparison setups with cryogenic current comparators might become crucial with respect to the type-A uncertainty, because it effectively limits the frequency of current reversals. Using a new bridge voltage detector with considerably increased bandwidth, we were able to trace the transient distortions caused by current reversal. Significant influence of the cabling is observed. Comparing a 12.9-k Omega quantum Hall resistor and a 100-Omega standard resistor, we achieved an expanded type-A uncertainty of about three parts in 10(10) after 24 min of measurement for current reversal frequencies down to 100 mHz.

引用

页码：2660 / 2666

页数：7

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