Increasing the accuracy of electrostatic field strength measurement by using an improved differential transimpedance amplifier circuit

Authors

DOI:

https://doi.org/10.15587/1729-4061.2023.292691

Keywords:

atmospheric electric field, electrostatic field strength, electrostatic field mill, transimpedance amplifier

Abstract

An electrostatic field mill (EFM) is widely used to measure the strength of electrostatic fields, the main drawback of which is the occurrence of large measurement errors (up to 15 % in the range from 0 to 1 kV/m).

This paper examines the aspects of using transimpedance amplifiers (TIAs) for the tasks of converting the current received from the EFM sensor into voltage, which will make it possible to reduce the instrumental error and ensure the linearity of the atmospheric electrostatic field strength measurement. In the general case, for the functional circuits of the electrostatic field mill, which include a differential transimpedance amplifier, there is the use of two TIA circuits, which are connected in parallel. Despite the simplicity of implementation, such a configuration contains a number of disadvantages and is not optimal. In the paper, a comparative analysis of a typical circuit of a differential TIA and a circuit of an ungrounded differential transimpedance amplifier with zero voltage drop proposed by the authors is carried out.

As a result of the analysis, it was established that the designed authentic circuit of the ungrounded differential transimpedance amplifier with zero voltage drop has better parameters of linearity and interference resistance, in contrast to the generally accepted one. The value of the signal-to-noise ratio for the proposed scheme improved by 42 % on average compared to the typical one. The main difference of the proposed scheme is that the stability of the amplification factor is ensured, the influence of the bias parameters of the operational amplifier is leveled, and the overall noise level is reduced. The use of the designed scheme of an ungrounded differential transimpedance amplifier with zero voltage drop could make it possible to increase the accuracy of the measurement of the electrostatic field strength

Author Biographies

Oleksandr Povshenko, National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"

Postgraduate Student

Department of Information and Measuring Technologies

Viktor Bazhenov, National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"

PhD, Associate Professor

Department of Automation and Non-Destructive Testing Systems

Olha Pazdrii, National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"

Assistant

Department of Computer-Integrated Optical and Navigation Systems

Halyna Bohdan, National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"

PhD, Associate Professor

Department of Automation and Non-Destructive Testing Systems

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Increasing the accuracy of electrostatic fields strength measurement by using an improved differential transimpedance amplifier circuit

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Published

2023-12-29

How to Cite

Povshenko, O., Bazhenov, V., Pazdrii, O., & Bohdan, H. (2023). Increasing the accuracy of electrostatic field strength measurement by using an improved differential transimpedance amplifier circuit. Eastern-European Journal of Enterprise Technologies, 6(5 (126), 6–14. https://doi.org/10.15587/1729-4061.2023.292691

Issue

Vol. 6 No. 5 (126) (2023): Applied physics

Section

Applied physics

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Copyright (c) 2023 Oleksandr Povshenko, Viktor Bazhenov, Olha Pazdrii, Halyna Bohdan

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