Electrodeless lamp starting/operation with sources at different frequencies
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United States of America Patent
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Jun 16, 1998
Grant Date -
N/A
app pub date -
Dec 6, 1995
filing date -
Dec 6, 1995
priority date (Note) -
Expired
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Abstract
An electrodeless lamp is started by coupling microwave power of a first frequency to a lamp cavity, while the discharge is maintained by coupling microwave power of a second frequency, wherein the first frequency is lower than the second frequency. A cooling fluid is impinged on the lamp bulb immediately before the application of the microwave power of the first frequency.
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