Electric lamp and discharge devices: systems – Current and/or voltage regulation
Reexamination Certificate
2008-05-27
2008-05-27
Owens, Douglas W. (Department: 2821)
Electric lamp and discharge devices: systems
Current and/or voltage regulation
C315S307000
Reexamination Certificate
active
07378806
ABSTRACT:
A continuous mode electronic ballast operates a lamp. A buck converter is configured to generate a direct current (DC) bus voltage at buck converter output. An inverter circuit is operationally coupled to the buck converter output, and configured to receive the DC voltage and convert the DC voltage into an AC voltage to drive the lamp. A short circuit protection circuit is operationally coupled to the buck converter output to sense the DC bus voltage, compare the sensed DC voltage to a predetermined threshold and, based on the comparison, shut down the inverter circuit.
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Fay Sharpe LLP
General Electric Company
Owens Douglas W.
Vu Jimmy T
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