Detail publikace

Design of measuring amplifiers for magnetic measurement

HEJTMÁNEK, T.

Originální název

Design of measuring amplifiers for magnetic measurement

Anglický název

Design of measuring amplifiers for magnetic measurement

Jazyk

en

Originální abstrakt

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.

Anglický abstrakt

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.

Dokumenty

BibTex


@inproceedings{BUT165310,
  author="Tomáš {Hejtmánek}",
  title="Design of measuring amplifiers for magnetic measurement",
  annote="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.",
  address="Vysoké učení technické v Brně, Fakulta elektrotechniky a komunikačních technologií",
  booktitle="Proceedings of the 26th Conference STUDENT EEICT 2020",
  chapter="165310",
  howpublished="online",
  institution="Vysoké učení technické v Brně, Fakulta elektrotechniky a komunikačních technologií",
  year="2020",
  month="april",
  pages="456--460",
  publisher="Vysoké učení technické v Brně, Fakulta elektrotechniky a komunikačních technologií"
}