983 resultados para Lamp-chimneys, globes, etc.
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Fil: Cragnulini, Franco Emmanuel. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.
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Fil: Cragnulini, Franco Emmanuel. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.
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Fil: Cragnulini, Franco Emmanuel. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.
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entworfen und gezeichnet von F. C. Klimsch
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In recent years, interest in light-emitting diode (LED) lighting has been growing because of its high efficacy, lifetime and ruggedness. This paper proposes a better adaptation of LED lamps to the technical requirements of photovoltaic lighting domestic systems, whose main quality criteria are reliability and that behave as voltage power supplies. As the key element of reliability in LED lamps is temperature, a solution is proposed for driving LED lamps using voltage sources, such as photovoltaic system batteries, with a control architecture based on pulse width modulation signal that regulates the current applied according to the LED lamp temperature. A prototype of the LED lamp has been implemented and tested to show its good performance at different temperatures and at different battery voltages.
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Ejemp. sin port
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Pie de imp. consta en col
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Texto con orla tip.
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Existe un ejemplar encuadernado dentro del volumen facticio XVIII/1829
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Decreto promulgado por Fernando VII
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Número 316 en el catálogo de Vicente Galbis e Hilari García, bajo el título "Andante con variaciones"