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.

引用

页数：2