Browsing by CNPq Subject "ENGENHARIAS::ENGENHARIA ELETRICA::CIRCUITOS ELETRICOS, MAGNETICOS E ELETRONICOS"
Now showing items 1-20 of 29
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Projeto, montagem e teste de um subwoofer ativo
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 14/04/2023)The present work describes in detail the development and construction of an active bass reproduction system "subwoofer". For this, it uses a TPA3255 integrated circuit. This class D amplifier has two outputs that are applied ... -
Desenvolvimento de um amplificador de áudio de alto desempenho utilizando realimentação negativa global
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 14/04/2023)This paper proposes the development of a high-performance audio amplifier with global feedback. The proposed topology is based on "A design methodology for audio amplifiers with no global negative feedback: proposal and ... -
Análise de um amplificador de áudio padrão
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 14/04/2023)This work analyzes and assembles the 50W "Blameless" audio amplifier designed by Douglas Self in his book. The three stages of the amplifier, the feedback loop, and the mechanisms used to minimize distortion were studied. ... -
Classificação de imagens de satélite com redes neurais convolucionais
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 06/04/2023)Satellite images are used in several areas, such as agribusiness, urban planning, environmental monitoring, among others. These images have a large and complex amount of data and the application of Machine Learning techniques ... -
Desenvolvimento de um sistema para economia de combustível com rede neural artificial
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 06/04/2023)This article aims to develop a data acquisition board to identify the uphill and downhill stretches of a vehicle through an LSTM (Long Short Term Memory) artificial neural network, and to estimate the reduction in fuel ... -
Algoritimo de detecção de retinopatia diabética baseado em aprendizado de máquina
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 06/04/2023)In this study, the application of neural network and machine learning techniques was explored in order to identify the presence of lesions related to diabetic retinopathy (DR) in fundus images. DR is a frequent complication ... -
Desenvolvimento de uma ferramenta semi-automática para diagnóstico de plasmas frios aplicados à indústria de semicondutores
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Engenharia Elétrica - PPGEE, Câmpus São Carlos, 23/06/2023)Technological applications involving plasma processing steps are quite common. With no doubt, the semiconductor industry has a relevant impact on the daily life of contemporary society. The manufacture of integrated circuits ... -
Projeto, implementação e testes de um amplificador de áudio de alta fidelidade para fones de ouvido
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 01/09/2023)In this monograph, a high fidelity audio amplifier with tone control for headphones was developed. Circuits are built on printed circuit boards using discrete components. Topologies were initially determined to be simulated ... -
Identificação de atividades cotidianas com membros superiores através de sensores inerciais
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Engenharia Elétrica - PPGEE, Câmpus São Carlos, 21/07/2023)In this work, the development of data processing strategies and methodologies for identifying 7 everyday activities performed with the upper limbs was proposed, with the support of inertial sensors and machine learning ... -
Desenvolvimento de um videocurso sobre o software de simulação LTspice
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 28/08/2023)This article describes the creation of an introductory video course on the LTspice circuit simulation software, with a focus on meeting the learning needs of students and electronics enthusiasts. The course comprises eleven ... -
Projeto e avaliação de desempenho de um amplificador de áudio sem realimentação negativa global utilizando transistores bipolares de junção
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 01/09/2023)This work proposes the development of an audio amplifier without global feedback using bipolar transistors of junction. It will be used as the basis of the article “A design methodology for audio amplifiers without global ... -
Análise de um conversor fonte de tensão a quatro fios com corrente de neutro gerada por cargas desequilibradas
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Engenharia Elétrica - PPGEE, Câmpus São Carlos, 24/02/2022)Several studies have examined the reduction of carbon dioxide emissions into the atmosphere. The use of sustainable energy sources, such as solar and wind power, is focused by some of these studies. The Voltage Source ... -
IoT para monitoramento em tempo real da ocupação em locais essenciais para facilitar a tomada de decisões
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 07/02/2024)The Internet of Things (IoT) can play an essential role in helping to face the challenges of capacity and high demand in essential service locations (bank branches, postal logistics spaces, lottery shops, public offices, ... -
Revisão bibliográfica: erros causados por raios cósmicos em dispositivos eletrônicos
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 27/10/2023)Cosmic rays, coming from outer space, can penetrate eletronic devices in order to change several characteristics such as functioning, performance and useful life. These particles are composed of an atomic nuclei, made up ... -
High integrated battery monitoring system with active balancing up to ±10A
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Engenharia Elétrica - PPGEE, Câmpus São Carlos, 22/02/2022)This master's thesis describes the development, construction, and setup of a flexible and modular, highly integrated battery monitoring system. The electronic unit uses an active balancing process with currents up to ±10A ... -
Análise, modelagem e controle de um conversor CC-CC, não isolado, elevador entrelaçado - abaixador, para conexão de sistemas fotovoltaicos na rede monofásica
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Engenharia Elétrica - PPGEE, Câmpus São Carlos, 31/05/2021)The increasing incorporation of alternative energy sources into the electrical system, despite its advantages, raises a wide range of new challenges, and it is in this context that power electronics devices start to play ... -
Desenvolvimento e construção de um sistema de controle de uma fechadura elétrica para residências comandado por um celular
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 26/10/2021)The present work consists in the development and construction of a prototype of an electric lock for homes, remotely controlled by cell phone using the ESP8266 NodeMcu module, a card with a Wi-Fi connection. One of the ... -
Análise dos efeitos de diferentes atmosferas sobre a fotocondutividade do Co3O4
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 22/09/2022)In this monograph, the effects of different atmospheres on the photoconductivity of Co3O4 were analyzed. For this purpose, with a Co3O4 sample set inside a cryostat filled with the selected atmosphere, its photoresponse ... -
Classificação de placas de trânsito com redes neurais para automação de veículos
(Universidade Federal de São Carlos, UFSCar, , Câmpus São Carlos, 09/03/2022)This article aims to develop a study on the functioning of Convolutional Neural Networks in the classification of traffic signs for use in autonomous cars, thus being able to be used as a tool to aid the vehicle in the ... -
Proposta da utilização de uma fibra de núcleo oco anti-ressonante para detecção simultânea de metano, monóxido de carbono e monóxido de nitrogênio
(Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Engenharia Elétrica - PPGEE, Câmpus São Carlos, 11/03/2022)Hollow-Core Anti-Resonant Optical Fibers (AR-HCF) is a novel hollow-core fiber with a low refractive index in the core and a high refractive index in the cladding. Unlike conventional solid-core optical fibers, where light ...