Computer Science – Performance
Scientific paper
Jan 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985stin...8529167a&link_type=abstract
Final Report California Univ., Berkeley. Lawrence Berkeley Lab. Lighting Systems Research Group.
Computer Science
Performance
Arc Lamps, Illuminating, Light Sources, Mercury Lamps, Efficiency, Electric Fields, Luminaires, Performance Tests, Solenoids, Spectra
Scientific paper
High intensity discharge lamps excited by solenoidal electric fields (SEF/HID) were examined for their ability to give high brightness, high efficacy and good color. Frequency of operation was 13.56 MHz (ISM Band) and power to the lamp plasma ranged from about 400 to 1000 W. Radio frequency transformers with air cores and with air core complemented by ferrite material in the magnetic path were used to provide the voltage for excitation. Electrical properties of the matching network and the lamp plasma were measured or calculated and total light from the lamp was measured by an integrating sphere. Efficacies calculated from measurement were found to agree well with the positive column efficacies of conventional HID lamps containing only mercury, and with additives of sodium, thallium, and scandium iodide.
Anderson Jeffrey M.
Johnson Paul D.
Jones Carol E.
Rautenberg T. H.
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