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We have implemented a predictive experimental tool to determine fluorescent lamp lifetime according to its operating conditions. This tool, based on an electrical measurement, provides an indication of the physical state of fluorescent lamps electrodes (hot cathodes). It may be used to shorten lifetime test and therefore to get a faster evaluation of the reliability of a given design. This paper shows...
In this work the absolute intensity of barium lines during dimming operation in the vicinity of fluorescent lamp electrodes is investigated using the method of atomic emission spectroscopy. Investigations of fluorescent lamps (FL) are often focused on the electrodes, since the lifetime of the lamps is typically limited by the electrode lifetime and durability. In general, a commercial electrode system...
We have developed a 3D model, based on the resolution of the propagation of acoustic waves, in the real geometry of the lamp burner. This model provides the frequency spectrum of the different modes which can take place in the lamp. It helps in the understanding of the coupling between the acoustic modes and the arc geometry. Especially, it has shown that the acoustic modes have an influence on the...
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