Abstract: The present invention relates to a box (1) for receiving a luminaire (10), comprising a box body (2) delimiting a space (3) for receiving and supporting a luminaire (10) within the box body (2), an opening (4) delimited by a circumferential edge (5) of the box body (2) for putting the luminaire (10) into and taking the luminaire (10) out of the box (1), and a tap (6) for hanging-up the box (1) carrying the luminaire (10) at a corresponding receiving section. The tap (6) comprises a connection portion (7) extending from the box body (2), and a hanger portion (8) being distant from the box body (2) and laterally extending from the connection portion (7). The present invention further relates to a method for installing a luminaire (10), in particular a built-in luminaire (10) which is providing within a box (1) according to the present invention supporting said luminaire (10) within the space (3) of its box body (2).

Abstract: The invention relates to a synchronous converter (10) comprising a transformer (11A, 11B) having a predefined winding ratio, which couples a supply-side (12) and a load side (13) of the synchronous converter (10), which are each allocated limit current intensities (15?, 15?, 24?, 24?); detection means (14), which are configured to detect a current intensity (15) on one side (12) from the supply side (12) and the load side (13); conversion means (16), which are configured to provide the limit current intensities (24?, 24?) from the other side (13) from the supply-side (12) and the load side (13), converted via the predefined winding ratio, as corresponding limit current intensities (15*, 15**) on the one side (12); and comparison means (17), which are configured to compare the detected current intensity (15) with the limit current intensities (15?, 15?) of the one side (12) and with the corresponding limit current intensities (15*, 15**) on the one side (12).

Abstract: The invention relates to an LLC stage for an LED driver (100), comprising a half bridge or full-bridge circuit (100a) comprising two switches (M40, M41), connected in series, a control circuitry (100e), such as e.g. a microcontroller or ASIC, for controlling switching operations of the switches (M40, M41), wherein the control circuitry (100e) for switches is arranged to monitor the middle point voltage between the two switches (M40, M41) and enables the switch on of one of the switches (M40, M41) only if the middle point voltage meets defined criteria. The control circuitry (100e) is designed to issue an error signal, if a dead time, during which both switches are non-conducting and resulting from the monitoring of the midpoint voltage, is greater than a preset threshold value.

Abstract: The invention proposes an improved illumination system (1). The illumination system (1) comprises: an LED module (2) having at least one LED or OLED; at least one light sensor (3); and a control circuit (4) designed to control the current flowing through the LED module (2), and to be supplied with an individual sensing signal of each of the at least one light sensor (3). The at least one light sensor (3) is designed such that: the light sensor (3) has its sensitivity peak set to be at a lower wavelength than the spectrum emitted by the LED module (2), preferably below 420 nm, more preferably below 410 nm, and/or the light sensor (3) has its sensitivity peak set to be at a higher wavelength than the spectrum emitted by the LED module (2), preferably above 680 nm. Furthermore, the invention proposes a method for calibrating the illumination system (1).

Abstract: A current sensor (12) serves to detect an alternating current (16). The current sensor (12) comprises a coupler (20) designed to decouple a proportional part of the alternating current (16) as a measurement current (22). In addition, the current sensor (12) comprises a switching terminal designed to feed in a switching signal (15). The current sensor (12) furthermore includes a switchable rectifier (21) designed to rectify the measurement current (22) in a manner controlled by the switching signal (15) and to output it as a rectified measurement current (Vsense).

Abstract: The invention regards the forwarding of multicast messages in a network system. A network router according to the present invention comprises a memory in which configuration data is stored. The configuration data define at least one route along which a multicast message is to be forwarded. If the forwarding of a multicast message is allowed in principle by such specified route, it is additionally checked if from the downlink side of the network router, multicast listener information was received. Only if both conditions are fulfilled, the multicast message will be forwarded along the specified route.

Abstract: The present invention relates to a synchronous flyback converter circuit (1) for operating an illuminant line (4) having at least one illuminant (5), more particularly having at least one light emitting diode, the synchronous flyback converter circuit (1) comprising: a transformer (T), having a primary winding (Np), which is electrically connected to a first switch (S1), and a secondary winding (Ns), which is electrically connected to an output (A1, A1?) of the synchronous flyback converter circuit via a second switch (S2), the illuminant line (4) being able to be connected to the output; and a control unit (2), which is designed to control the first switch (S1) and the second switch (S2).

Abstract: The invention proposes a communication adaptor, comprising within one casing: a transmission antenna, a wired control interface connected to wired control interface terminals, a control circuitry for converting wirelessly received wireless communication signals into wired control interface signals and vice versa, wherein the adaptor is designed such that it can be brought in close contact with a reception antenna of a converter for lighting mean, such as e.g. LEDs, in order to establish a wireless communication, wherein the control circuitry and the wired control interface are powered by means of the wired control interface terminals.

Abstract: A method and apparatus of adjusting parameter for an electrical device. The method of adjusting parameter for an electrical device, the electrical device comprising a converter, the method including: calculating a performance evaluation parameter of the electrical device, when the converter using a parameter value table for running; adjusting at least one parameter value in the parameter value table of the converter according to an input parameter so as obtain the optimized performance evaluation parameter of the electrical device and use the adjusted parameter value table corresponding to the optimized performance evaluation parameter for running. Therefore, the self adapting parameter in the table will be enable to find the best performance for different input and load conditions and better performance of Harmonics will not limit the operation range.

Abstract: The invention relates to a synchronous converter (10) comprising a transformer (11A, 11B) having a predefined winding ratio, which couples a supply-side (12) and a load side (13) of the synchronous converter (10), which are each allocated limit current intensities (15?, 15?, 24?, 24?); detection means (14), which are configured to detect a current intensity (15) on one side (12) from the supply side (12) and the load side (13); conversion means (16), which are configured to provide the limit current intensities (24?, 24?) from the other side (13) from the supply-side (12) and the load side (13), converted via the predefined winding ratio, as corresponding limit current intensities (15*, 15**) on the one side (12); and comparison means (17), which are configured to compare the detected current intensity (15) with the limit current intensities (15?, 15?) of the one side (12) and with the corresponding limit current intensities (15*, 15**) on the one side (12).

Abstract: The invention relates to an electronic database (101) having entries for a plurality of operating devices (151) and a plurality of lamps (152), which electronic database is searched on the basis of a query (115). The query (115) indicates a light characteristic. On the basis of the search of the electronic database (101), a combination of a selected operating device and a selected lamp is determined and an electrical operating point of the selected operating device is determined. Then, an output (116) is provided, which indicates the selected operating device, the selected lamp and the determined operating point.

Abstract: The aim of the invention, as demonstrated in various examples, is to control a current flow to an electrical load, e.g. a light emitting diode, in a particularly precise manner. For this purpose, control gear (90) comprising a DC-DC switching controller (100) is used in various examples.

Abstract: The invention proposes an improved illumination system (1). The illumination system (1) comprises: an LED module (2) having at least one LED or OLED; at least one light sensor (3); and a control circuit (4) designed to control the current flowing through the LED module (2), and to be supplied with an individual sensing signal of each of the at least one light sensor (3). The at least one light sensor (3) is designed such that: the light sensor (3) has its sensitivity peak set to be at a lower wavelength than the spectrum emitted by the LED module (2), preferably below 420 nm, more preferably below 410 nm, and/or the light sensor (3) has its sensitivity peak set to be at a higher wavelength than the spectrum emitted by the LED module (2), preferably above 680 nm. Furthermore, the invention proposes a method for calibrating the illumination system (1).

Abstract: LED light source, comprising a series connection of at least two LED strings, wherein each of the at least two LED strings corresponds to a single LED or comprises at least two LEDs, wherein at least one ohmic resistive element is connected in series with a first LED string of the at least two LED strings, and at least one switching element is connected in parallel to the series connection of the at least one ohmic resistive element and the first LED string, wherein the at least one switching element is configured to bypass in its conductive state the series connection of the at least one ohmic resistive element and the first LED string.

Abstract: A system (100) comprising a mobile communication terminal (1) and a buildings engineering system GT is disclosed. The mobile communication terminal has a display unit (4) and an input unit (3), preferably a combined input and display unit (4), a near-field communication interface (5) and a control unit SE. The control unit SE is set up to use the near-field communication interface (5) to read at least one parameter P of the buildings engineering system GT and to provide said parameter for software application 6 executed by the mobile communication terminal (1), wherein the software application is designed to take the at least open parameter P as a basis for depicting a user interface (9) on the display unit (2) and to evaluate a user input on the user interface (9) via the input unit (3) and to send actuation data based on the user input to the buildings engineering system GT. The mobile communication terminal (1) is preferably a smartphone or a tablet.

Abstract: Disclosed in the present application is a driver for lighting means, preferably light emitting diodes, comprising a charge pump circuit, which is improved based on a common first-stage charge pump circuit. A fifth capacitor is added to connect a power source input end of the charge pump circuit to an LLC or LC circuit, a compensation current is provided for the power source input end using a resonant current generated by a resonant inductance in the LLC or LC circuit, an input angle of a power input current is widened and the input current is smoothed, so as to improve the problems, that a total harmonic distortion is larger and the harmonic does not satisfy the IEC standard, of a single-stage charge pump circuit where the output range is larger.

Abstract: The present invention relates to a box (1) for receiving a luminaire (10), comprising a box body (2) delimiting a space (3) for receiving and supporting a luminaire (10) within the box body (2), an opening (4) delimited by a circumferential edge (5) of the box body (2) for putting the luminaire (10) into and taking the luminaire (10) out of the box (1), and a tap (6) for hanging-up the box (1) carrying the luminaire (10) at a corresponding receiving section. The tap (6) comprises a connection portion (7) extending from the box body (2), and a hanger portion (8) being distant from the box body (2) and laterally extending from the connection portion (7). The present invention further relates to a method for installing a luminaire (10), in particular a built-in luminaire (10) which is providing within a box (1) according to the present invention supporting said luminaire (10) within the space (3) of its box body (2).