Device for controlling light sources having a ballast
AssigneePatent-Treuhand-Gesellschaft fuer elektrische Gluehlampen mbH
InventorsAxel Pilz, Andreas Huber
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Abstract
The invention relates to a device for controlling light sources (30-35) having a ballast (20-23) includes a set point generator for prescribing a brightness set point for the light sources (30-35), and having means for generating a control signal, dependent on the set point of the set point generator, for the purpose of brightness control of the light sources (30-35). According to the invention, the device has means for adapting the control signal to different types of light sources. The device according to the invention renders possible uniform dimming of different types of light sources which are installed in a lighting system.
Claims9
A device for controlling light sources having a ballast comprising:
- means for generating a control signal, dependent on a set point of a set point generator, for brightness control of the light sources,
- means for adapting the control signal to different types of light sources,
- means for generating first control signal values whose dependence on the set point is described by a first control signal set point characteristic curve having a substantially linear course,
- means for generating second control signal values whose dependence on the set point is described by a second control signal set point characteristic curve having a substantially nonlinear course,
- means for selecting the first control signal values or the second control signal values such that the first or the second control signal values are used for brightness control of the light sources.
Dependencies are inferred from the claim text.