INVESTIGATION OF AN AMPLITUDE DETECTOR FOR RESONANT ELECTRICAL CIRCUIT PARAMETER METERS 

Anatoliy V. Svetlov, Doctor of technical sciences, professor, professor of the sub-department of radio engineering and radio electronic system, Penza State University (40 Krasnaya street, Penza, Russia), E-mail: rtech@pnzgu.ru
Aleksandr S. Koldov, Engineer of the sub-department of radio engineering and radio electronic system, Penza State University (40 Krasnaya street, Penza, Russia), E-mail: rtech@pnzgu.ru

Background. The purpose of the study is to develop and investigate a minor-error amplitude detector for converting the amplitude of a sine wave voltage into the direct current voltage. Materials and methods. The implicit method for calculating the root mean square (rms) values of alternating voltage has been implemented to investigate the amplitude detector. Results. A block diagram for the amplitude detector along with the research methodology and outcomes are presented. Provided the sinusoidal voltage waveform is with 5 V to 10 V amplitude and 100 Hz to 1 MHz frequency, the relative error in converting the rms voltage value falls short of ± 2 %, and the relative error in converting the voltage amplitude being ± 1.5 %. Conclusions. The feasibility of using an amplitude detector that implements the implicit method for calculating the rms values of alternating voltage to develop means for measuring resonant electrical circuit parameters has been substantiated.

 investigation, amplitude detector, sinusoidal voltage

Svetlov A.V., Koldov A.S. Investigation of an amplitude detector for resonant electrical circuit parameter meters. Izmerenie. Monitoring. Upravlenie. Kontrol' = Measuring. Monitoring. Management. Control. 2024;(4):84–91. (In Russ.). doi: 10.21685/2307-5538-2024-4-10