Publication result detail

Low-Level Measurements

ZDRAŽIL, L.; ROUBAL, Z.

Original Title

Low-Level Measurements

English Title

Low-Level Measurements

Type

Paper in proceedings (conference paper)

Original Abstract

This paper deals with the measurement of low values of electrical voltages and currents from sources with high internal resistance. The measured values are close to the theoretical limits of achievable sensitivity, which are determined by the magnitude of the Johnson´s thermal noise. Non-thermal noises are also generated in the circuit. The most significant noise after Johnson´s thermal noise is flicker noise with a frequency dependence of 1/f. Choosing an accurate operational amplifier with low input bias and noise is just as important as choosing precise passive components with low noise.

English abstract

This paper deals with the measurement of low values of electrical voltages and currents from sources with high internal resistance. The measured values are close to the theoretical limits of achievable sensitivity, which are determined by the magnitude of the Johnson´s thermal noise. Non-thermal noises are also generated in the circuit. The most significant noise after Johnson´s thermal noise is flicker noise with a frequency dependence of 1/f. Choosing an accurate operational amplifier with low input bias and noise is just as important as choosing precise passive components with low noise.

Keywords

Low-level measurements, operational amplifiers, voltage noise, current noise

Key words in English

Low-level measurements, operational amplifiers, voltage noise, current noise

Authors

ZDRAŽIL, L.; ROUBAL, Z.

RIV year

2022

Released

26.04.2022

Publisher

Vysoké učení technické v Brně, Fakulta elektrotechniky a komunikačních technologií

Location

Brno

ISBN

978-80-214-6030-0

Book

Proceedings II of the 28th Conference STUDENT EEICT 2022 Selected Papers

Edition

1

Pages from

259

Pages to

263

Pages count

5

URL

https://www.eeict.cz/eeict_download/archiv/sborniky/EEICT_2022_sbornik_2_v2.pdf

BibTex

@inproceedings{BUT178092,
  author="Lukáš {Zdražil} and Zdeněk {Roubal}",
  title="Low-Level Measurements",
  booktitle="Proceedings II of the 28th Conference STUDENT EEICT 2022 Selected Papers",
  year="2022",
  series="1",
  pages="259--263",
  publisher="Vysoké učení technické v Brně, Fakulta elektrotechniky a komunikačních technologií",
  address="Brno",
  isbn="978-80-214-6030-0",
  url="https://www.eeict.cz/eeict_download/archiv/sborniky/EEICT_2022_sbornik_2_v2.pdf"
}