Operating circuit for a direct current discharge lamp
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United States of America Patent
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-
Jun 7, 1988
Grant Date -
N/A
app pub date -
Apr 17, 1987
filing date -
Apr 17, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A power supply for a metal halide discharge lamp includes a circuit for applying a high voltage starting pulse to the arc tube of the lamp to initiate the discharge, a glow transition current to provide power transitioning the arc tube from its glow to its run mode, and a run power supply circuit to provide continuous controlled d-c current to the arc tube.
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