Estudo sobre redes de estabilização de impedância de linha

Abstract

Given the importance of enhancing the understanding of tests and procedures involved in the design and manufacturing for the commercialization of electronic equipment worldwide, especially in Brazil, research is conducted on line impedance stabilization networks (LISNs) and the contexts in which these devices are used, in order to contribute to the visibility and better understanding of this subject in the national academic environment. To this end, it is necessary to understand the concepts of electromagnetic interference and compatibility, examine the main standards related to electromagnetic compatibility, analyze line impedance stabilization networks (LISNs) and their methods of measuring conducted electromagnetic interference. A theoretical and practical research is carried out with computational simulations using the LTspice software involving a switched-mode power supply project, which finds, with the anchored methodological and scientific basis, that the use of an EMI filter makes the switched-mode power supply compliant with the CISPR 22 standard, while without the filter, it does not meet the standards.