Ballast for high pressure sodium lamps having constant line and lamp wattage
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United States of America Patent
Stats
-
Mar 12, 1991
Grant Date -
N/A
app pub date -
Sep 25, 1986
filing date -
Sep 25, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A high efficiency, electronic ballast is taught for high pressure sodium (HPS) lamps. The ballast is powered by AC line current which is rectified so that 160 volts of direct current lights the lamp. The ballast maintains constant wattage to the lamp and constant line wattage. A striker circuit develops a high voltage, short duration pulse to strike the lamp.
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Cited Art Landscape
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