Variant of determining the technical condition of an electrolytic capacitor by contactless method

Abstract

In the course of the full-scale war in Ukraine, the defense forces began to receive radio-electronic weapons from partner countries. The samples of weapons that are provided are mostly not new and have a certain service life and (or) shelf life. As a result, the issue of diagnosing the technical condition of such samples became more acute. The article provides a variant of determining the technical characteristics of one of the low-reliability radio electronic components (electrolytic capacitor) of modern pulsed power supply units of radio electronic equipment. Practical methods and measuring devices for diagnosis and typical problems that have to be faced during work on determining the technical condition of the control object are considered. The main physical properties are described, which are the basis of the proposed method of determining the technical condition and the presented equivalent circuit of the diagnostic signal sensor. Calculations of empirical studies and assumptions expressed in previous works of the authors have been mathematically confirmed. The presented method is based on the use of a non-contact induction method. The determination of the technical condition of the radio-electronic component is carried out on the basis of the analysis of the output signals of the functional nodes that contain this component. The use of the proposed method requires the availability of a reference signal (response to the test signal) with which the signal obtained during the test is compared. Based on the potential effectiveness, informativeness and safety of the proposed method, the expediency of a non-fundamental change in the design of the control object is substantiated, in order to effectively apply the proposed method both directly in the blocks of mounted boards and circuits and on test stands.