Arrangement in connection with discharge lamp
AssigneeTeknoware Oy
InventorJouko Kuisma
Life of this patent
Estimating the term…
Abstract
An arrangement in connection with a discharge lamp, the arrangement comprising an electronic ballast for igniting and burning the discharge lamp, and a voltage control device arranged to modify supply voltage of the ballast. The voltage control device is further arranged to include a power control signal in the supply voltage. The arrangement further comprises a power filter and a control filter for separating the power control signal from the supply voltage, the ballast being responsive to the power control signal in order to control the level of light of a fluorescent tube.
Claims16
An arrangement for use with a discharge lamp for emitting a level of light, the arrangement comprising:
- an electronic ballast for igniting and burning the discharge lamp,
- a voltage control device adapted to modify a supply voltage comprising a base-frequency with a pulse shape and to include a power control signal in the supply voltage, wherein the voltage control device is adapted to modify the base-frequency pulse shape of the supply voltage to include power control information, and
- a power filter and a control filter for separating the power control signal from the supply voltage, the ballast being responsive to the power control signal in order to control the level of light of the discharge lamp.
Dependencies are inferred from the claim text.