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An Alternative Optical Method for Acoustic Resonance Detection in HID Lamps
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2011)
Acoustic resonances are observed in high-pressure discharge lamps operated with ac input modulated power frequencies in the kilohertz range. This paper describes an optical resonance detection method for high-intensity ...
Projeto e implementação de um sistema eletrônico auto-oscilante com controle de luminosidade para acionamento de lâmpada fluorescente
(Universidade Tecnológica Federal do ParanáPato BrancoBrasilDepartamento Acadêmico de ElétricaEngenharia ElétricaUTFPR, 2018-06-13)
This monograph deals with the design and implementation of a fluorescent lamp reactor, with luminous intensity control. The activation of the fluorescent lamp is carried out through a half-bridge inverter with resonant LCC ...
Otimização no consumo de energia elétrica em alguns setores da UTFPR - Campus Pato Branco
(Universidade Tecnológica Federal do ParanáPato BrancoBrasilDepartamento Acadêmico de ElétricaEngenharia ElétricaUTFPR, 2018-11-06)
This work aimed to carry out a study of energy conservation within UTFPR – campus Pato Branco, approaching some cases of energy waste and possible solutions to minimize these wastes. These cases were chosen because they’re ...
Análise dos harmônicos em lâmpadas LED disponíveis no Brasil
(Universidade Tecnológica Federal do ParanáCuritibaBrasilGraduação em Engenharia ElétricaUTFPR, 2017-06-13)
This project presents a quantitative analysis of harmonic current distortion injected in the electrical grid by LED lamps predominant in Brazilian households, comparing them to the IEC 61000-3-2 standard. From the definition ...
Dimmable electronic ballast with high power-factor SEPIC preregulator, for multiple tubular fluorescent lamps
(2004-11-29)
An electronic ballast for multiple tubular fluorescent lamps is presented in this paper. The proposed structure features high power-factor, dimming capability, and soft-switching to the semiconductor devices operated in ...
Lámpara de prueba. Unidad 16
(Servicio Nacional de Aprendizaje (SENA), 2014)
Avaliação do uso de luminárias tipo LED em garagens de edifícios comerciais e residenciais quando comparadas com luminárias convencionais
(Universidade Tecnológica Federal do ParanáCuritibaBrasilGraduação em Engenharia CivilUTFPR, 2016-06-21)
Despite of being on the market for some time, the LED (Light Emission Diod) lamp illumination system has not being used in currently enterprises, whether commercial or residential. The promise of a cutback on the monthly ...
Análise da vida útil de lâmpadas fluorescentes utilizando diferentes tipos de circuitos de pré-aquecimento
(Universidade Tecnológica Federal do ParanáCuritibaDepartamento Acadêmico de Eletrotécnica, 2012-07-30)
In the present days, the fluorescent lamps are being widely used. When compared to the incandescent normal lamps, due to its greater luminous efficiency, the use of fluorescent lamps results in considerable energy saving. ...
High power factor dimmable electronic ballast for multiple tubular fluorescent lamps
(Institute of Electrical and Electronics Engineers (IEEE), 2004-01-01)
This paper presents a dimmable electronic ballast designed for multiple fluorescent lamps applications. A ZCS-PWM Boost rectifier and a classical resonant Full-Bridge inverter compose this new electronic ballast, providing ...