Drive method and drive circuit for light-emitting device using gas discharge, and ultraviolet irradiation device
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United States of America Patent
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Nov 13, 2018
Grant Date -
May 24, 2018
app pub date -
Nov 14, 2016
filing date -
Nov 30, 2015
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Abstract
During a normal operation, alternating drive voltage to be applied between a pair of electrodes provided to face an outer surface of a bottom part of a gas discharge light emitting tube is switched to a voltage value V2 lower than a voltage value V1 at the time of starting lighting. Further, the alternating drive voltage to be applied during the normal discharge operation is intermittently applied in a predetermined cycle and duty ratio to enable adjustment of light emission intensity.
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