Title :
Current pulse fed high-pressure-sodium lamps
Author :
Kaiser, Walter ; Marques, Ricardo Paulino ; Correa, Alexander Fernandez
Author_Institution :
Escola Politecnica, Sao Paulo Univ., Brazil
Abstract :
Spectral and photometric time-averaged measurements at nominal lamp power rating are presented for pulse operated HPS lamps of several manufacturers and different sodium concentrations. The choice of pulse and cycle parameters, which determine the optimal ratio between pulse and simmer powers are discussed. Spectra at various operating conditions as well as curves relating CCT, luminous flux and color rendering index with pulse cycle parameters are presented. Acoustic emissions were measured and are briefly discussed.
Keywords :
colorimetry; fibre optic sensors; metal vapour lamps; photometry; spectrometers; 70 W; acoustic emissions measurement; color rendering index; current pulse fed high-pressure-sodium lamps; cycle parameters; luminous flux; nominal lamp power rating; operating conditions; photometric time-averaged measurements; pulse cycle parameters; pulse parameters; pulse powers; simmer powers; spectral time-averaged measurements; Acoustic emission; Acoustic measurements; Acoustic pulses; Electron tubes; Fluorescent lamps; Light sources; Photometry; Pulse measurements; Pulsed power supplies; Resonance;
Conference_Titel :
Industry Applications Conference, 2002. 37th IAS Annual Meeting. Conference Record of the
Conference_Location :
Pittsburgh, PA, USA
Print_ISBN :
0-7803-7420-7
DOI :
10.1109/IAS.2002.1042754
