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AssigneeLutron Technology Company LLC
InventorDonald F. Hausman, JR.
Estimating the term…
A dimmable ballast circuit for a compact fluorescent lamp controls the intensity of a lamp tube in response to a phase-control voltage received from a dimmer switch. The ballast circuit comprises a phase-control-to-DC converter circuit that receives the phase-control voltage, which is characterized by a duty cycle defining a target intensity of the lamp tube, and generates a DC voltage representative of the duty cycle of the phase-control voltage. Changes in the duty cycle of the phase-control voltage that are below a threshold amount are filtered out by the converter circuit, while intentional changes in the duty cycle of the phase-control voltage are reflected in changes in the target intensity level and thereby the intensity level of the lamp tube.
A lamp controller comprising:
A lamp control method comprising:
A non-transitory, machine-readable, storage device that includes instructions that, when executed by a lamp control circuit, causes the lamp control circuit to:
Dependencies are inferred from the claim text.