Abstract: A method for setting an electronic ballast (101), wherein the electronic ballast and a compensating unit are synchronized, and wherein setting of the electronic ballast is performed by the compensating unit.

Abstract: An exemplary switching unit is disclosed for operation of a rocker lever of a circuit breaker, which is provided on the circuit breaker. The switching unit has a drive unit with a free-play distance, such that a slide of the drive unit, which slide is intended for operation of the rocker lever, does not impede the movement of the rocker lever.

Abstract: The present invention relates to an electronic ballast for discharge lamps (LA) which have preheatable electrodes (E1, E2). The electronic ballast has a measuring apparatus (M), which is designed to measure, during the preheating process, a variable, which is correlated with the electrode temperature increased by the preheating, of at least one of the electrodes (E1, E2) of a connected discharge lamp (LA), and a control apparatus (C), which is designed to match the electrode temperature, during the preheating process, in response to the measurement by adjusting an operational parameter of the electronic ballast. Furthermore, the electronic ballast is designed to detect cross discharges or a sufficient operating temperature of one of the electrodes (E1, E2) and possibly to ignite the discharge.

Abstract: Various embodiments provide an electronic ballast for operation of at least one discharge lamp, with the electronic ballast having an apparatus for power factor correction with a voltage converter. The voltage converter itself includes an inductance, a diode and a switch. A control apparatus, which produces a square-wave signal as a control signal to the switch of the apparatus for power factor correction, includes an I regulator. This produces a first component of the on time of the control signal. In order to react to short-term power demands in the load circuit for example on ignition of the discharge lamp, an electronic ballast furthermore may include a power determining apparatus, which is coupled to the control apparatus, with the control apparatus being designed to vary the control signal as a function of the power consumed in the discharge lamp.

Abstract: A circuit arrangement for striking a discharge lamp, comprising: a drive apparatus, having an output adapted to provide a drive signal with a predeterminable frequency; an inverter, which is coupled to the output of the drive apparatus, and having an output adapted to provide a square-wave signal with a predeterminable duty factor; a load circuit, which is coupled to the output of the inverter and has at least one terminal for the discharge lamp, the load circuit comprising a lamp inductor, which is coupled in series between the output of the inverter and the at least one terminal for the discharge lamp; a first control loop with a first reference variable, a first manipulated variable and a first controlled variable, the first control loop having a first time constant; a second control loop with a second reference variable, an auxiliary manipulated variable and a second controlled variable, the second control loop having a second time constant; and a strike detection apparatus, which is adapted to detect str

Abstract: An electronic ballast for operating at least one discharge lamp may include an input for coupling to an input voltage; a load circuit with an output, the load circuit having a bridge circuit; an intermediate circuit capacitor that is coupled to the input of the load circuit; a transformer that is coupled between the input of the ballast and the capacitor, the transformer having a transformer switch; a control apparatus for driving the switch; and a monitoring apparatus for monitoring at least one value correlated with the input voltage, the control apparatus being designed to deactivate the driving of the switch upon detection of a deactivation criterion; and a voltage measuring apparatus for measuring the intermediate circuit voltage, the control apparatus being designed to reactivate the driving of the switch after a deactivation phase when the sum of input and intermediate circuit voltage has dropped below a prescribable threshold value.

Abstract: Various embodiments provide a method for ascertaining a type of a gas discharge lamp using an electronic ballast for operating different types of gas discharge lamps, wherein the different types of gas discharge lamps differ in at least one operating parameter, wherein the method may include: a) preheating at least one filament in the gas discharge lamp for a predetermined preheating time; b) measuring a physical variable which is characteristic for the type of the gas discharge lamp at the end of the preheating time and providing the measurement value of said variable; and c) ascertaining the lamp type on the basis of the measurement value which is provided, wherein the preheating time is increased by a predetermined time period and the b) and c) are repeated if the lamp type in c) cannot be ascertained uniquely. Moreover, various embodiments provide an electronic ballast for operating at least two different types of gas discharge lamps which have at least one different operating parameter.

Abstract: An electronic ballast for operating at least two discharge lamps is provided, which may include a starting detection apparatus for detecting whether one of the discharge lamps has been started; wherein a drive circuit includes an input, which is coupled to a starting detection apparatus, wherein a threshold value entry apparatus is designed to enter a second threshold value for a setpoint value of a total current through at least two inductances, wherein the second threshold value has a smaller magnitude than a first threshold value; and wherein the drive circuit is designed to drive a first electronic switch and a second electronic switch taking into consideration the first threshold value as setpoint value prior to detection of the starting of a discharge lamp by the starting detection apparatus, and taking into consideration the second threshold value as setpoint value.

Abstract: The present invention relates to a circuit arrangement for operating at least one electric lamp and at least one LED including: an inverter having a bridge circuit having at least one first bridge transistor and one second bridge transistor arranged in series with one another, a center point of the bridge circuit being defined between the first and second bridge transistors; a lamp supply unit for supplying the electric lamp with energy from the bridge circuit, which includes a supply line with an inductance, via which the center point (M) of the bridge circuit is coupled to a first connection for the electric lamp; the lamp supply unit including an LED supply unit, which is designed to supply the at least one LED with energy. Moreover, it relates to an operating method for at least one electric lamp and at least one LED using such a circuit arrangement.

Abstract: A method for operating a circuit arrangement is provided. The method may include coupling a second connection of a control device to a connection that provides an alternating signal during operation of the circuit arrangement; in the control device: generating a trigger signal for the control electrode of the mode switch that is correlated with the sum signal from the signal at the connection for providing an alternating signal and the control signal; and providing the trigger signal at the output of the control device.

Abstract: The present invention relates to an electronic ballast for discharge lamps (LA) which have preheatable electrodes (E1, E2). The electronic ballast has a measuring apparatus (M), which is designed to measure, during the preheating process, a variable, which is correlated with the electrode temperature increased by the preheating, of at least one of the electrodes (E1, E2) of a connected discharge lamp (LA), and a control apparatus (C), which is designed to match the electrode temperature, during the preheating process, in response to the measurement by adjusting an operational parameter of the electronic ballast. Furthermore, the electronic ballast is designed to detect cross discharges or a sufficient operating temperature of one of the electrodes (E1, E2) and possibly to ignite the discharge.

Abstract: An illumination device includes an integrated electronic ballast and a luminaire connecting terminal, that has a terminal housing, wherein there is integrated in the terminal housing an inrush current limiting circuit that is designed such that when the luminaire is switched on it prevents excessively large inrush currents by a voltage drop in the inrush current limiting circuit during the switched on phase.

Abstract: A circuit arrangement for striking a discharge lamp, comprising: a drive apparatus, having an output adapted to provide a drive signal with a predeterminable frequency; an inverter, which is coupled to the output of the drive apparatus, and having an output adapted to provide a square-wave signal with a predeterminable duty factor; a load circuit, which is coupled to the output of the inverter and has at least one terminal for the discharge lamp, the load circuit comprising a lamp inductor, which is coupled in series between the output of the inverter and the at least one terminal for the discharge lamp; a first control loop with a first reference variable, a first manipulated variable and a first controlled variable, the first control loop having a first time constant; a second control loop with a second reference variable, an auxiliary manipulated variable and a second controlled variable, the second control loop having a second time constant; and a strike detection apparatus, which is adapted to detect str

Abstract: A paver hopper flap suspension system has a number flaps attached to the hopper frame. A cable restraint line is attached to the flaps. A tensioning system is attached to the cable restraint line. The tensioning system allows the flaps to distort as the loading truck body engages the hopper entrance. Once the truck exits the hopper entrance the hopper flap suspension system causes the flaps to spring back to their original shape. The suspension system may include a torsion spring biasing the flaps into a vertical position. The tensioning system may include a tension adjuster. Using this system the flaps are not torn and hold the asphalt in place as the loading trucks dump asphalt into the hopper.

Abstract: The present invention relates to a circuit arrangement for operating at least one electric lamp (LP) having a drive circuit (16), which has at least one terminal for a system voltage (UN) on the input side and at least one terminal for the at least one electric lamp (LP) on the output side; the drive circuit (16) having a control unit (18) and a step-up converter having a step-up converter inductor (L2) and a switch (S1), and the control unit (18) being designed to operate the step-up converter in a discontinuous mode, in which the current (IN) through the step-up converter inductor (L2) has gaps, the duration (?t) of these gaps being varied. It also relates to an operating method for at least one electric lamp (LP) using such a circuit arrangement.

Abstract: The present invention relates to an electronic ballast for discharge lamps, for example low-pressure discharge lamps, having a converter having a switching element and a two-part lamp inductor which is connected upstream and downstream of the discharge lamp. An electronic ballast according to the invention has a smoothing circuit which reduces voltage jumps caused by switching operations in the converter at the lamp terminals.

Abstract: The present invention relates to a circuit arrangement for operating at least one electric lamp and at least one LED including: an inverter having a bridge circuit having at least one first bridge transistor and one second bridge transistor arranged in series with one another, a center point of the bridge circuit being defined between the first and second bridge transistors; a lamp supply unit for supplying the electric lamp with energy from the bridge circuit, which includes a supply line with an inductance, via which the center point (M) of the bridge circuit is coupled to a first connection for the electric lamp; the lamp supply unit including an LED supply unit, which is designed to supply the at least one LED with energy. Moreover, it relates to an operating method for at least one electric lamp and at least one LED using such a circuit arrangement.

Abstract: The present invention relates to a circuit arrangement for operating at least one electric lamp (LP) having a drive circuit (16), which has at least one terminal for a system voltage (UN) on the input side and at least one terminal for the at least one electric lamp (LP) on the output side; the drive circuit (16) having a control unit (18) and a step-up converter having a step-up converter inductor (L2) and a switch (S1), and the control unit (18) being designed to operate the step-up converter in a discontinuous mode, in which the current (IN) through the step-up converter inductor (L2) has gaps, the duration (?t) of these gaps being varied. It also relates to an operating method for at least one electric lamp (LP) using such a circuit arrangement.

Abstract: A circuit arrangement for operating at least one LED and at least one electric lamp having at least one first filament and one second filament, includes first and second terminals for the corresponding filaments; and a lamp supply unit supplying power to the electric lamp; it also including an LED supply unit coupled to the second terminal for the second filament of the electric lamp and designed to supply power to the at least one LED. Also described is an operating method for the circuit arrangement operating at least one LED and at least one electric lamp as described. The circuit arrangement also includes an LED supply unit, which is coupled to the second terminal for the second filament of the electric lamp and supplies power to the at least one LED.

Abstract: The invention relates to a converter circuit with coupled inductances L1 and L2 which have a core K having an air gap S which is asymmetrical with respect to the inductances.