Abstract: An apparatus for artificial weathering or lightfastness testing of samples or for simulating solar radiation, the apparatus comprising a weathering chamber, a UV light source provided in the weathering chamber, and a fluorescent material arranged to be radiated by a UV radiation emitted by the UV light source, the fluorescent material being configured to emit a fluorescent radiation comprising spectral emission characteristics similar to natural solar radiation.

Abstract: The illumination device comprises a plurality of illumination units (21), each illumination unit (21) comprising a light source (21.1) for emitting a radiation beam (21.1A) and at least one laser beam source (21.2) for emitting at least one laser beam (21.2A), and a plurality of actuator means (22), wherein each actuator means (22) is connected to an illumination unit (21) and is adapted to change an orientation of the illumination unit (21) based on a detected beam direction of the laser beam (21.2A).

Abstract: The sensor device (100; 200) for a device (10) for weathering or lightfastness testing of samples comprises a sensor housing (110) which is adapted to be arranged in a weathering chamber (1) of the device (10) in the same manner as a sample (3), and an air mass sensor (120; 220) which comprises a sensor element (120.2; 220.2) and is attached to the sensor housing (110) in such a manner that the sensor element (120.2; 220.2) is adapted to be mounted on the sensor housing (110.2; 220.2) and attached to the sensor housing (110) such that the sensor element (120.2; 220.2) is exposed in the same manner as a sample (3) to an air flow prevailing in the weathering chamber (1).

Abstract: A lighting device (21), comprising a light source (21.1); a power controller (21.2; 21.20) configured to control the supply of electrical power to the light source (21.1) such that upon receipt of a start signal, the supplied electrical power is increased from a first value to a second value, the first value being different from zero and the second value being greater than the first value; and an input (21.4) for supplying the start signal.

Abstract: The illumination device comprises a plurality of illumination units (21), each illumination unit (21) comprising a light source (21.1) for emitting a radiation beam (21.1A) and at least one laser beam source (21.2) for emitting at least one laser beam (21.2A), and a plurality of actuator means (22), wherein each actuator means (22) is connected to an illumination unit (21) and is adapted to change an orientation of the illumination unit (21) based on a detected beam direction of the laser beam (21.2A).

Abstract: A lighting device (21), comprising a light source (21.1); a power controller (21.2; 21.20) configured to control the supply of electrical power to the light source (21.1) such that upon receipt of a start signal, the supplied electrical power is increased from a first value to a second value, the first value being different from zero and the second value being greater than the first value; and an input (21.4) for supplying the start signal.

Abstract: The sensor device (100; 200) for a device (10) for weathering or lightfastness testing of samples comprises a sensor housing (110) which is adapted to be arranged in a weathering chamber (1) of the device (10) in the same manner as a sample (3), and an air mass sensor (120; 220) which comprises a sensor element (120.2; 220.2) and is attached to the sensor housing (110) in such a manner that the sensor element (120.2; 220.2) is adapted to be mounted on the sensor housing (110.2; 220.2) and attached to the sensor housing (110) such that the sensor element (120.2; 220.2) is exposed in the same manner as a sample (3) to an air flow prevailing in the weathering chamber (1).

Abstract: The Power Supply Unit comprises an output providing electrical power between a positive power supply line and a common ground line and a communication line. An adjustable current generator responsive to an internal measurement signal generates an output current at the output, and a voltage source is coupled to the communication line. A current measurement unit measures a current through the communication line and generates the internal measurement signal depending on the measured current through the communication line. Specifically, the Power Supply Unit is configured to determine the voltage drop on the common ground line by applying via the voltage source two different voltages to the communication line.

Abstract: Various embodiments may relate to a synchronous rectifier including at least one rectifier cell, to which power is supplied via a secondary winding of a transformer arranged between the input connections of the synchronous rectifier. The rectifier cell comprises a bipolar main switch operated in the inverse mode, wherein an energy store is provided in the base line of the bipolar main switch, which energy store, in conjunction with an auxiliary switch which is concomitantly controlled by the relevant secondary winding for the bipolar main switch, ensures that the main switch is switched off prior to the end of the inverse phase.

Abstract: The sensor device (100) has a sensor housing (110), to which at least two sensors from a group consisting of a black standard sensor (120), a UV radiation sensor (130), an air temperature sensor and a humidity sensor are connected.

Abstract: The apparatus has a weathering chamber, in which at least one sample can be arranged, and at least one radiation source, which are arranged in the weathering chamber, wherein the radiation source is provided with a storage device, on which data relating to the radiation source are stored.

Abstract: The Power Supply Unit comprises an output providing electrical power between a positive power supply line and a common ground line and a communication line. An adjustable current generator responsive to an internal measurement signal generates an output current at the output, and a voltage source is coupled to the communication line. A current measurement unit measures a current through the communication line and generates the internal measurement signal depending on the measured current through the communication line. Specifically, the Power Supply Unit is configured to determine the voltage drop on the common ground line by applying via the voltage source two different voltages to the communication line.

Abstract: Various embodiments may relate to a Light Engine Module including a plurality of series connected LEDs, a positive power supply line, a common ground line, a communication line, a current set resistor) coupled to the communication line, with its value of conductance being indicative for the current demand of the Light Engine Module, and a variable current generator connected to the communication line. The variable current generator is responsive to at least one measurement signal provided by at least one sensor. Various embodiments may further relate to a Power Supply Unit, and a lighting system including the Power Supply Unit with at least one Light Engine Module.

Abstract: Various embodiments may relate to a power supply unit, including an output for outputting an operating current depending on an internal measurement signal, a communications line, and a current-measuring device, which is connected to the communications line. The current-measuring device is designed to generate a current on the communications line which is proportional to the conductance of a current-setting resistance. The current-measuring device has a current mirror, which is designed to mirror the generated current on the communications line. The current-measuring device is designed to convert the mirrored current into an internal measurement signal with a reference potential which is different than the communications line. At least one light source module is connectable to the output, wherein the at least one light source module has the current-setting resistance, which is connectable to the communications line.

Abstract: The apparatus for artificially weathering or testing the lightfastness of samples has a weathering chamber, in which at least one sample can be arranged, and a plurality of radiation sources, which are arranged in the weathering chamber and which are operable independently of one another, wherein the apparatus is configured in such a way that the at least one sample is movable on a closed path around the plurality of radiation sources.

Abstract: Various embodiments may relate to a power supply unit including an output for outputting a current, a communications line, a current-measuring device and a microcontroller including an analog-to-digital converter. The current-measuring device generates a current on the communications line which is proportional to the conductance of a current-setting resistance, the current is convertable into a digital value by the analog-to-digital converter, the power supply unit assumes various operating states based on the digital value of the measured current, and at least one light source module is connectable to the output, wherein the at least one light source module has the current-setting resistance, which is connectable to the communications line. Various embodiments may further relate to a light source module including an input, a communications line and a current-setting resistance for setting the current applied to the light source module.

Abstract: Various embodiments may relate to a synchronous rectifier including at least one rectifier cell, to which power is supplied via a secondary winding of a transformer arranged between the input connections of the synchronous rectifier. The rectifier cell comprises a bipolar main switch operated in the inverse mode, wherein an energy store is provided in the base line of the bipolar main switch, which energy store, in conjunction with an auxiliary switch which is concomitantly controlled by the relevant secondary winding for the bipolar main switch, ensures that the main switch is switched off prior to the end of the inverse phase.

Abstract: The sensor device (100) has a sensor housing (110), to which at least two sensors from a group consisting of a black standard sensor (120), a UV radiation sensor (130), an air temperature sensor and a humidity sensor are connected.

Abstract: A buck converter for operating at least one LED. In this case, the buck inductor comprises a first buck inductor and a second buck inductor, wherein a charge pump is coupled between the coupling point of the two buck inductors and a supply connection of a control apparatus which is used for actuating a buck switch.

Abstract: Various embodiments may relate to a Light Engine Module including a plurality of series connected LEDs, a positive power supply line, a common ground line, a communication line, a current set resistor) coupled to the communication line, with its value of conductance being indicative for the current demand of the Light Engine Module, and a variable current generator connected to the communication line. The variable current generator is responsive to at least one measurement signal provided by at least one sensor. Various embodiments may further relate to a Power Supply Unit, and a lighting system including the Power Supply Unit with at least one Light Engine Module.