In this paper, a study was made of the test device for voltage stabilizers Teplocom ST-222/500, ST-555, ST-888. The DUT provides the verification algorithm outlined in the setup, verification, and process run instructions. This test involves changing the phasing of the conductors at the input of the device under test; control of voltage sources supplied to the tested stabilizer; measurement of voltage values ​​at the input and output of the stabilizer; their registration. The aim of the work is to design a device for testing voltage stabilizers, with an error of the measuring unit of not more than 2.5% and a test speed of at least 1.3 s. To confirm the achievement of the specified parameters, simulation was carried out in the MicroCap 11 software package.

Keywords: voltage stabilizer, MicroCap, Teplocom, transient simulation

This article discusses the development of a control and measuring system for reading barcodes from printed circuit boards in the production process. A functional diagram of the device was designed. A full-scale experiment was carried out to determine the working distance and angles for reading barcodes. It was revealed that the developed system has competitive advantages over analogues in a higher barcode reading speed and work with different barcode inclination angles.

Keywords: control and measuring system, bar code, printed circuit boards, laser range finder

When creating a model of a nonlinear electrical system based on differential equations, it is important to keep in mind that ordinary differentiation does not give an adequate mathematical idea of ​​the nonlinear physical processes taking place. Even in the simplest case of a conductor with a current, the construction of an adequate model is only possible if the tensor approach is applied. From this point of view, any electrical system is an object of tensor methodology. A typical example of a non-linear electrical system is an AC electromagnetic drive. The nonlinear nature of the processes in such devices is due to a number of reasons. The main reasons are: current displacement in the winding of the AC electromagnetic drive and saturation of the steel of the magnetic circuit in the process of magnetization. Both phenomena admit tensor description, which is confirmed by the research presented in the article.

Keywords: dynamic characteristic of magnetization, electromagnet, mathematical model, tensor methodology

This article discusses one of the parts of the development of a device for testing samples of magnetostrictive materials. A study of various designs and an analysis of the sensitivity of the measuring system are presented. The substantiation of the use of a magnetic shunt to increase the sensitivity is given, which is confirmed in field experiments.

Keywords: magnetostrictive materials, basic magnetization curve, magnetic shunt, magnetic flux