Method for controlling striations in a lamp powered by an electronic ballast
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United States of America Patent
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Issued Date -
Aug 4, 2005
app pub date -
Dec 3, 2004
filing date -
Jan 29, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A method for controlling striations in a lamp powered by an electronic ballast includes the steps of generating an asymmetric lamp current using an unbalanced circuit component in the electronic ballast and supplying that current to the lamp. The unbalanced circuit component may be an unbalanced output transformer or an unbalanced DC choke. The output transformer is unbalanced by offsetting the number of turns on each side of the tap on the primary winding of the transformer. In a similar manner, the DC choke is unbalanced by offsetting the number of turns in each winding of the choke.
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