High Voltage Source
Mostrando 1-12 de 37 artigos, teses e dissertações.
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1. Construction and measurement of an electromagnetic noise generator based on an automotive coil
This article covers the design of an electromagnetic noise generator which uses an automotive coil as the main component. A short theoretical analysis covers the generation of high voltage pulsed current from the available DC source originated from the battery. An electronic dimmer, a circuit used to control the brightness of a light, by controlling the effe
Rev. Bras. Ensino Fís.. Publicado em: 22/06/2017
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2. Swine manure digestate treatment using electrocoagulation
ABSTRACT Anaerobic biodigestion is an appropriate alternative for the treatment of swine wastewater due to its biogas generation properties and the possibility of its application as a source of energy for heating or electricity. However, digestate can still contain high levels of turbidity, organic carbon and nutrients and must be correctly managed as a biof
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-10
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3. Desenvolvimento de uma centrífuga de alta rotação eletronicamente monitorada para pesquisa em biologia espacial
This work presents the development of an centrifuge prototype for experiments with vegetables. Its main features are the high mechanical performance and instruments. In more details are presented the specification, implementation, validation and performance assessment through a case study. Its high speed and stability generates a vector component of centrifu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/03/2012
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4. ANALISE E PROJETO DO CONVERSOR BUCK INTERCALADO PARA ALIMENTAÇÃO DE LÂMPADAS DE DESCARGA EM ALTA PRESSÃO DE ALTA POTÊNCIA / INTERLEAVED BUCK CONVERTER ANALYSIS FOR HIGH POWER HIGH INTENSITY DISCHARGE LAMPS SUPPLYING
This work presents a detailed analysis about the interleaved buck converter applied to electronic ballasts to supply high power HID lamps, assuming the input voltage as a PFC stage output. As the output capacitor has a maximum value to be applied in parallel with the lamp, parallel operated converters are a suitable choice because the output current ripple c
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2012
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5. Study of ion beam sputtering using a glow discharge ion source
In this work, sputtering yield in a glow discharge ion source system has been determined using the operating parameters of the ion source. The sputtering yield is found to be varied between 0.4 to 1 atoms removed per incident ion for nitrogen while for argon between 0.2 to 1.3 atoms removed per incident ion. The feature of this ion source is high output ion
Brazilian Journal of Physics. Publicado em: 2010-03
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6. Levantamento de mapas operacionais de transferência metálica para soldagem MIG/MAG de aço ao carbono na posição plana / Operational Mapping of Metal Transfers for Carbon Steel Gas Metal Arc Welding in Flat Position
The MIG/MAG process is nowadays the most important welding process. This is due to its high production capacity, characteristic searched by industries to improve their manufacturing processes. Thus, due to this process relevance, development of tools that helps to understanding how it works comes out as necessary, especially in relation to proper welding set
Publicado em: 2010
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7. Aqueous Congo Red degradation induced by plasma with glow discharge electrolysis / Degradação do corante Vermelho Congo em solução aquosa através de plasma obtido por eletrólise de alta tensão
Due to the concern with environmental impact and the need for the use of dyes for the textile industries, during the last years several studies has been undertaken to develop new technologies for energetic treatments that allow the degradation of compounds present in industrial waste. In this present work, the construction of a system for degradation of orga
Publicado em: 2009
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8. SYNTHESIS METHODOLOGY FOR SIMPLIFIED ZVT TOPOLOGIES APPLIED TO BIDIRECTIONAL PWM POLES / METODOLOGIA DE SÍNTESE DE TOPOLOGIAS ZVT SIMPLIFICADAS APLICADAS A PÓLOS PWM BIDIRECIONAIS
Among the soft-switching techniques, the zero-voltage-transition (ZVT) technique has been accepted well by the industry due its attractive characteristics, such as simplicity, low losses in the auxiliary commutation circuit (ACC), operation with soft-switching for a wide load range, and closest operation to the PWM converter counterpart. In three-phase volta
Publicado em: 2009
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9. IEC-61850: interoperability and interchangeability between supervision, control and protection equipment using data communication networks / IEC-61850: interoperabilidade e intercambialidade entre equipamentos de supervisão, controle e proteção através das redes de comunicação de dados
Data communication has always been considered as a critical factor in real time operation of electric power systems. This is due to the need for fast and accurate decisions at different locations, from power generation to the user interfaces. With the digital technology, measurement, signals and commands are encrypted into data packets that travels on the su
Publicado em: 2009
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10. Blindagem balÃstica de compÃsito polimÃrico contra o vandalismo e proteÃÃo UV para cadeias de isoladores de vidro em linhas de transmissÃo
The aim of this study was to induce the UV absorption of soda-lime silica glasses by gamma irradiation, as well as to select and evaluate the mechanical and electrical properties and also the microstructure of the polycarbonate (PC), with and without heat treatment, and the glass fiber reinforced epoxy composite, to make a prototype for transmission lines co
Publicado em: 2008
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11. Development of an electronic device for attraction drops of the electrostatic spraying in citric plants / Desenvolvimento de sistema eletrônico para pulverização e atração de gotas em plantas cítricas
The technology of application of agricultural defensives in tree like plants and orchard plants in general way, still little is researched in Brazil. Ahead of requirements of the international market, the application technology must take care of some parameters that will give the credibility of the Brazilian products in the exterior market, as for the certif
Publicado em: 2008
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12. Project of circuits for generation of voltage reference in receiving/transmitting RF systems. / Projeto de circuitos para geração de tensão de referência em sistemas receptores/transmissores RF.
This work consists in the design of a CMOS Voltage Reference Source with a temperature coefficient inferior to 50 ppm/ºC. This voltage source should be applied in radio frequency receptor/transmitter but can be also applied in any analog system. The technology employed in the design is the CMOS 0.35 µm from the AMS (Austria Micro Systems) with four metal l
Publicado em: 2007