High Pressure Sodium Lamp
Mostrando 1-3 de 3 artigos, teses e dissertações.
-
1. DESIGN OF A COMMERCIAL APPROACH OF ELECTRONIC BALLASTS TO SUPPLY HIGH-PRESSURE SODIUM LAMPS IN PUBLIC LIGHTING / SISTEMATIZAÇÃO DO PROJETO DE REATORES ELETRÔNICOS PARA ALIMENTAÇÃO DE LÂMPADAS DE VAPOR DE SÓDIO EM ALTA PRESSÃO PARA ILUMINAÇÃO PÚBLICA
This thesis presents an electronic ballast prototype to supply high-pressure sodium lamps used in public lighting. The goal is to develop a commercial approach able to replace the still commonly used electromagnetic ballasts, performing improvements in the public lighting system. Along this thesis, the state of art in lighting area is presented, especially i
Publicado em: 2009
-
2. Impact of artificial lighting on the ecosystem / Influência da iluminação artificial sobre a vida silvestre: técnicas para minimizar os impactos, com especial enfoque sobre os insetos
The impact of light pollution on man and on the ecosystem is a rising concern among ecologists however, in the same time the human population is demanding more lighting for safety and comfort. In order to satisfy human lighting needs with a minimum impact on the ecosystem, manly on insects, we tested commercial equipments using different types of lights and
Publicado em: 2008
-
3. AnÃlise, projeto e implementaÃÃo de reatores eletrÃnicos para acionamento de lÃmpadas de alta intensidade em descarga "AID", controlados por circuitos de lÃgica reconfigurÃvel "FPGA"
Programmable logic devices were introduced about fifteen years ago and nowadays they are used in areas like Telecommunications, Instrumentation and more recently Power Electronics. This work presents the application of an FPGA device in the control of a ballast circuit for driving high intensity discharge lamps. The electronic ballast presents improvements r
Publicado em: 2007