Publication detail

Design of measuring amplifiers for magnetic measurement

HEJTMÁNEK, T.

Original Title

Design of measuring amplifiers for magnetic measurement

Type

article in a collection out of WoS and Scopus

Language

English

Original Abstract

The purpose of this paper is a design of a measuring preamplifier for a fluxmeter which was designed in Department of Theoretical and Experimental Electrical Engineering which is used for hysteresis loops on ferromagnetic materials measurements. Having respect to measure coils characteristics and processed voltage levels with ranges in nV and μV, there was necessary to in-vestigate measure principles of such low voltage. And then choose an appropriate operational am-plifier. Mainly with minimum input residual voltage and offset temperature dependency. Also was necessary to propose effective zero compensation and eliminate thermoelectric influence in the whole designed device. There was applied noise optimization of selected operational amplifier in PSpice software. And in the last part of the paper will be show results of noise measurement on the amplifier. The given results will be evaluated together with possibilities of application for a meas-urement purposes in labs.

Keywords

Fluxmeter, operational amplifier, modulation amplifier, automatic zero operational amplifier, input noise measurement

Authors

HEJTMÁNEK, T.

Released

23. 4. 2020

Publisher

Vysoké učení technické v Brně, Fakulta elektrotechniky a komunikačních technologií

Location

Brno

ISBN

978-80-214-5867-3

Book

Proceedings of the 26th Conference STUDENT EEICT 2020

Pages from

456

Pages to

460

Pages count

5

URL

https://www.fekt.vut.cz/conf/EEICT/archiv/sborniky/EEICT_2020_sbornik_1.pdf

BibTex

@inproceedings{BUT165310,
  author="Tomáš {Hejtmánek}",
  title="Design of measuring amplifiers for magnetic measurement",
  booktitle="Proceedings of the 26th Conference STUDENT EEICT 2020",
  year="2020",
  pages="456--460",
  publisher="Vysoké učení technické v Brně, Fakulta elektrotechniky a komunikačních technologií",
  address="Brno",
  isbn="978-80-214-5867-3",
  url="https://www.fekt.vut.cz/conf/EEICT/archiv/sborniky/EEICT_2020_sbornik_1.pdf"
}