ELECTRODELESS PLASMA LAMP WITH VARIABLE VOLTAGE POWER SUPPLY
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United States of America Patent
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Issued Date -
Oct 4, 2012
app pub date -
Feb 8, 2012
filing date -
Feb 8, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present disclosure relates to apparatuses and methods to control an electrodeless plasma light source. In various embodiments, an apparatus is provided that includes an electrodeless plasma lamp with a lamp driver circuit. The lamp driver circuit may include a voltage-controlled oscillator to provide radio frequency power to the electrodeless plasma lamp. A radio frequency power detector is coupled to an output of the voltage-controlled oscillator to detect a level of reflected power from the electrodeless plasma lamp. A microprocessor is configured to receive signals from the radio frequency power detector and control a frequency of the voltage-controlled oscillator to minimize the reflected power from the electrodeless plasma lamp.
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