Title :
Small-Signal Characterization of Acoustic Resonances in Low-Wattage Metal Halide Lamps
Author :
Costa, M. A Dalla ; Alonso, J.M. ; Ribas, J. ; Cardesín, J. ; García, J.
Author_Institution :
DIEECS, Oviedo Univ., Gijon
Abstract :
In this paper a detailed study about acoustic resonance in low-wattage metal halide lamps is presented. In order to analyze the acoustic resonance behavior, the lamps are supplied by DC current and a controlled variable-frequency small-signal is superposed. By using this method, theoretical and experimental resonances can be compared, verifying their amplitudes, and the threshold power value for their excitation. Besides, this analysis is done for same lamps with different operation hours, in order to verify its influence in the resonance behavior
Keywords :
acoustic resonance; metal vapour lamps; DC current; acoustic resonances; controlled variable-frequency small-signal; low-wattage metal halide lamps; Acoustic waves; Circuit topology; Current supplies; Electronic ballasts; Frequency modulation; High intensity discharge lamps; Plasma waves; Resonance; Resonant frequency; Voltage fluctuations;
Conference_Titel :
Power Electronics Specialists Conference, 2005. PESC '05. IEEE 36th
Conference_Location :
Recife
Print_ISBN :
0-7803-9033-4
DOI :
10.1109/PESC.2005.1581824
