Back to results
US 6,486,613 B2Granted
Reducing the clamping voltage of operating devices for gas discharge lamps
AssigneePatent-Treuhand-Gesellschaft fuer Elecktrische Gluehlampen mbH
InventorsFelix Franck, Markus Heckmann
Life of this patent
Estimating the term…
Abstract
An electronic operating device for discharge lamps is disclosed in which an output terminal is connected via a coupling capacitor (CB) to a reference potential (E). An electric component (VC) which acts as a voltage source is inserted in series with the coupling capacitor (CB) in order to reduce the potential of an output terminal. The electric component (VC) consists in one embodiment of an inductor which is coupled to the lamp inductor.
Claims3
Electronic operating device for gas discharge lamps which has the following features:
- an AC voltage generator (G) which makes an AC voltage available between a generator output (1) and a reference potential (E),
- a reactance network (Z) which is connected to the generator output (1) and which provides a first output terminal (2) to which one or more series-connected discharge lamps (LP) are connected,
- a series circuit of a coupling capacitor (CB) and an electric component (VC) via which the lamp circuit is connected from a second output terminal (3) to the reference potential (E), and
- a reduction voltage (UVC) which is formed at the two poles of the electric component (VC), the voltage profile of the reduction voltage (UVC) being characterized in that it reduces the root-mean-square value of the voltage between at least one output terminal (2, 3) and the reference potential (E).
1 more element
Dependencies are inferred from the claim text.