Abstract: The invention relates to a circuit arrangement for providing an operating DC voltage from a mains voltage, more particularly to operating circuits comprising a clocked electronic converter. Such operating circuits are preferably used for lamps or other light sources. The present invention protects such circuit arrangements from transient mains overvoltages. As soon as a mains overvoltage occurs a diverter switch Th connects the voltage-sensitive switch S11 of the electronic converter to a storage capacitor C12.

Abstract: The invention relates to an electric lamp (1) with a base at one end and with an outer bulb (3), mounted in a base (2), and at least one integral lamp (4), preferably a high-volt halogen lamp, which is arranged within the outer bulb (3), and at least two power supply wires (9, 9a, 9b) from the base (2) to the integral lamp (4). The invention likewise relates to a method for producing such a lamp. The at least two power supply wires (9, 9a, 9b) are surrounded by a preferably cylindrical bulb (6) made from nonconductive material, and the cylindrical bulb (6) is connected, preferably fused, to the outer bulb (3).

Abstract: The invention relates to an electric lamp (1) with a base at one end and with an outer bulb (3), mounted in a base (2), and at least one integral lamp (4), preferably a high-voltage halogen lamp, which is arranged within the outer bulb (3), and at least two power supply wires (6) from the base (2) to the integral lamp (4), the integral lamp (4) being held on the power supply wires (6). At least one of the power supply wires (6) has, in the region of the end (12) on the integral-lamp side, at least one u-shaped bend (11) for accommodating a base (8) of the integral lamp (4).

Abstract: A device for protecting an electronic converter, e.g. for halogen lamps, includes a comparator (10) having an output (Vo) as well as non-inverting (14) and inverting (12) inputs for receiving a first input signal (Vi(P)) indicative of the load applied to the converter and a second input signal (Vref(T°)) indicative of the temperature of the converter. The comparator (10) is in a non-inverting Schmitt-trigger configuration having an input-output characteristic with hysteresis. Consequently, the output (Vo) is switched from a first value (Vo1) to a second value (Voh) to switch off the electronic converter as the first input signal (Vi(P)) exceeds a first threshold value (VT1). The output (Vo) is switched back from the second value (Voh) to the first value (Vo1) to restart the electronic converter when the first input signal (Vi(P)) falls below a second threshold value (VT2).

Abstract: A discharge lamp with a cast base has two electrodes for feeding power into the discharge vessel, two current feeds for making contact with the electrodes from the outside and a lamp base with a recess for receiving one end of the discharge vessel. In this context, one end of the discharge vessel is introduced into the recess in the lamp base. Between the lamp base and the discharge vessel there is an intermediate space. The current feeds are located at least partially within the intermediate space. This intermediate space has been cast with a sealing compound so that the sealing compound fills at least part of the interspace and encloses the end of the discharge vessel in such a way that the current feeds of the discharge lamp are sealed off from the outside in so far as being located within the lamp base.

Abstract: A lighting device (10, 11) has at least one light source (1, 1R, 1G, 1B) which is actuated by an operating unit (2) with an electrical signal on the basis of a light curve (3) stored in the operating unit (2). A display system having such a lighting device is also described.

Abstract: A process and apparatus for manufacturing a container (8) for accommodating an Hg source (9) for a discharge lamp. The process includes the following steps are carried out: a) production of a helical cutout (2) in a coil former (1); b) insertion of a flexible strip-like wire fabric (3) into the helical cutout (2); c) movement of the strip-shaped wire fabric (3) through the helical cutout (2) and production of a coiled hollow-cylindrical container (8).

Abstract: The invention is based on an illuminating system with a frame (2) and a flat lamp (5) arranged therein. The frame (2) is configured as a hinged frame with a hinge-mounted portion (7). This allows the flat lamp (5) to be easily fitted and removed.

Abstract: A carrier element, on which an Hg-containing material for application in a discharge lamp (1) is formed, has at least one depression (12, 20 to 23), in which the Hg-containing material (17) is arranged. A method for producing such a carrier element and to a discharge lamp with such a carrier element is also disclosed.

Abstract: Carrier element on which an Hg-containing material for application in a discharge lamp is formed, and discharge lamp with such a carrier element The invention relates to a carrier element on which an Hg-containing material for application in a discharge lamp (1) is formed, the Hg-containing material being in the form of a bar-shaped element (12) and being arranged on a holder (14, 15, 16, 17; 19) of the carrier element (11). The invention also relates to a discharge lamp of such a carrier element.

Abstract: The invention relates to a lamp base with a plastic base part which has electrical connections for the power supply of at least one lighting device of the lamp, the lighting device being enclosed by a lamp vessel and the electrical connections being configured by metal pins. The first ends of these pins project laterally, perpendicular to the longitudinal extension of the lamp base, from the plastic base part in order to establish electrical contact with the lamp socket, and the second ends are adapted to connect a power supply wire for the at least one lighting device which wire is to the outside of the lamp vessel. The invention is characterized in that the plastic base part has a recess on a lower face of the plastic base part facing away from the lamp vessel, the two ends of the metal pins being disposed in the recess.

Abstract: A light-emitting system is provided, in which a flexible printed circuit (2) is connected to a plug connection (4) which connects the flexible printed circuit (2) either to a power source or to a second flexible printed circuit (20). The connection of the flexible printed circuit to a second printed circuit or to a power source can be made easily, and can be produced in large quantities.

Abstract: In an LED component comprising at least one LED (3) and at least one driver (2) for the LED (3), the at least one driver (2) and the at least one LED (3) are spaced apart from one another in such a way that a heat exchange between the driver (2) and the LED (3) takes place during operation of the LED (3).

Abstract: An electric lamp with a fuse seal, which seals off the lamp bulb, a metal seal with power supply wires and feed lines being provided in the fuse seal, and the metal seal with power supply wires and feed lines being provided with a structure, which has been produced by a laser.