Ignition control apparatus used in electronic ballast and method thereof
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United States of America Patent
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Nov 26, 2013
Grant Date -
Jan 5, 2012
app pub date -
Apr 15, 2011
filing date -
Jun 30, 2010
priority date (Note) -
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Abstract
The present invention is generally related to an electronic ballast, an ignition control apparatus used therein and associated method of operation. In one embodiment, an electronic ballast comprising an inverter and an ignition control apparatus which comprises a stability monitoring circuit and a controlled ignition circuit. The inverter converts a DC input voltage into an AC voltage to drive a gas discharge lamp. The stability monitoring circuit monitors whether the DC input voltage is stable. The controlled ignition circuit is electrically coupled to the stability monitoring circuit and the lamp, ignites the lamp based on the monitoring result. The controlled ignition circuit does not ignite the gas discharge lamp until the DC input voltage becomes stable.
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