High-Accuracy Current Amplifier for Small Electric Currents

被引：0
|
作者：
Krause, Christian [1 ]
Drung, Dietmar [1 ]
机构：
[1] Phys Tech Bundesanstalt PTB, Abbestr 2-12, D-10587 Berlin, Germany
来源：
2024 CONFERENCE ON PRECISION ELECTROMAGNETIC MEASUREMENTS, CPEM 2024 | 2024年
关键词：
Current measurement; low-noise amplifiers; measurement standards; measurement uncertainty; noise measurement;
D O I：
10.1109/CPEM61406.2024.10646011
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：
A new instrument for the measurement and generation of small direct currents, the Advanced Laboratory Current Amplifier (ALCA), is presented. It is based on the concepts of the Ultrastable Low-noise Current Amplifier (ULCA) and aims for improved user-friendliness and cost-efficient fabrication while still achieving very low measurement uncertainties. Different ALCA variants are designed to cover current ranges between microamperes and sub-femtoamperes. The predicted parameters of two basic ALCA variants are evaluated and discussed. In addition, we show an initial long-term study of the uninterruptible power supply used.
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页数：2
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