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US 6,204,614 B1Granted
Bi-level output electronic high intensity discharge (HID) ballast system
AssigneePhilips Electronics North America Corporation
InventorRobert Erhardt
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AssigneePhilips Electronics North America Corporation
InventorRobert Erhardt
Estimating the term…
A bi-level output electronic high intensity discharge (HID) ballast system includes a circuit for selectively generating a bi-level output for powering a lamp and an electronic HID ballast with a feedback loop. The system also includes an error amplifier receiving a first signal indicative of one of current and power applied to the lamp and a reference voltage and generating a control signal applied to the feedback loop to thereby control power the applied to the lamp, and a switch which controls the level of the reference voltage. Alternatively, the system includes an error amplifier receiving a feedback signal indicative of one of current and power generated by the electronic HID ballast and a reference voltage and generating a control signal applied to the feedback loop to thereby control the power applied to the lamp, and a switch which controls the level of the feedback signal.
A circuit for selectively generating a bi-level output in a system powering a lamp, the system having an electronic ballast with a feedback loop, comprising:
A circuit for selectively generating a bi-level output in a system powering a lamp, the system having an electronic ballast with a feedback loop, comprising:
A circuit for selectively generating a bi-level output in a system powering a lamp, the system having an electronic ballast with a feedback loop, comprising:
Dependencies are inferred from the claim text.