Patent application number | Description | Published |
20100072918 | Circuit Arrangement and Method for Operating at Least One First and a Second Lamp - A circuit arrangement for operating at least one first and second lamp each provided with a first and second coil electrode includes a first and second terminal for the first coil electrode of the first lamp, a first and second terminal for the second coil electrode of the first lamp, a first and second terminal for the first coil electrode of the second lamp, a first and second terminal for the second coil electrode of the second lamp, at least one supply connection for supplying voltage to the respective first coil electrode of the at least one first and second lamp, and at least one preheating device for the respective first coil electrode of the at least one first and second lamp. The second terminal of the first coil electrode of the first lamp is coupled to the second terminal of the first coil electrode of the second lamp while the preheating device encompasses a first preheating inductor and a second preheating inductor. | 03-25-2010 |
20100084982 | OPERATING DEVICE AND METHOD FOR THE COMBINED OPERATION OF GAS DISCHARGE LAMPS AND SEMICONDUCTOR LIGHT SOURCES - In various embodiments, a dimmable operating device for the combined operation of a gas discharge lamp and a semiconductor light source is provided. The dimmable operating device may be configured such that only the semiconductor light source is operated in the lower dimming range and only the gas discharge lamp is operated in the upper dimming range, and at the changeover points at which one sort of light source out of the semiconductor light source and the gas discharge lamp is switched off or on, at the same time a jump in power is applied to the other light source out of the semiconductor light source and the gas discharge lamp, with the result that the human eye cannot perceive, or can only perceive with difficulty, the changeover point. | 04-08-2010 |
20100084986 | CIRCUIT ARRANGEMENT AND METHOD FOR PROGRESSIVELY DIMMING ONE OR MORE LIGHTING MEANS - Various embodiments provide a circuit arrangement with two or more switching inputs for progressively dimming one or more lighting means, the switching inputs being capable of being current-conducting or non-current-conducting, wherein the circuit arrangement is configured such that it, owing to the switching combination of the switching inputs, provides a dimming signal at the output, which dimming signal can be processed by the operating devices connected thereto and dims the lighting means to corresponding light levels. | 04-08-2010 |
20100134012 | CIRCUIT ARRANGEMENT, AND METHOD FOR THE OPERATION OF A FLUORESCENT LAMP - A circuit arrangement is provided for operating a fluorescent lamp with a first and a second filament, the circuit arrangement including a heater for the first and the second filament, wherein the circuit arrangement furthermore includes: an apparatus for storing at least one threshold value for at least one operational parameter of the fluorescent lamp; an apparatus for determining the value of the at least one operational parameter; and a control apparatus, which is configured to activate the heater for the first and the second filament for a predeterminable period of time in the event of the at least one threshold value for the at least one operational parameter being exceeded by the determined value of the at least one operational parameter. | 06-03-2010 |