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This paper aims to study the electrical and harmonic characterization of 250W HPS lamp connected to both magnetic and electronic ballasts. It presents, harmonic measurements under full power for HPS lamp. In the case of electronic ballast which can dim the power of the lamp.
The supply of high intensity discharge (HID) lamp at high frequency provides important benefits in ballast optimization. However, in certain frequency range, the lamp is disturbed by the acoustic resonance (AR) which can lead to lamp arc fluctuation, extinction and lamp destruction in the worst case. This paper presents a novel approach of lamp control based on the injection of signals of approaching...
In the last decades, the high pressure sodium (HPS) lamp has been developed to be supplied in high frequency in order to increase the lighting efficiency of the system lamp/ballast. However, at some given frequencies, standing acoustic waves, namely acoustic resonance (AR), might develop in the burner and cause lamp luminous fluctuation, extinction and destruction in the most serious case. Two main...
Summary form only given. Moving striations in fluorescent lamp is a well-known phenomenon. AC operation and mixed filling-ins pose difficulties in understanding the physical reason and relative processes of moving striations. In this paper, an experiment is carried out in order to find out factors correlated to moving striations in fluorescent lamps. The basic experimental circuit consists of a 36...
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