Abstract: Various embodiments may relate to a lighting system including a Power Supply Unit and at least one Light Engine Module, with an interface between the Light Engine Modules and the Power Supply Unit. The Light Engine Modules send pulses representing their current demand to the Power Supply Unit adjusting the output current accordingly. The Light Engine Modules are connected in parallel, and the pulse sequences are sent at the same time. Measures are taken to cope with interfered pulses.

Abstract: PWM-based dimming techniques are provided for lighting systems. The techniques can be used to eliminate or otherwise reduce the potential for strobing and flickering, and may be implemented, for example, in a driver suitable for powering LED lighting systems, but can be used with other suitable light sources as well. In an example embodiment, the potential for line frequency induced flicker, or even line disturbances that are periodic with the line frequency, can be eliminated or reduced by synchronizing the PWM frequency to the line frequency or so-called mains frequency, and the potential for strobing can be eliminated or reduced by either using a randomized phase angle on a cycle-to-cycle basis or by using multiple PWM LED drive circuits all having constant cycle-to-cycle phase angle but a different phase angle from drive circuit to drive circuit (or different from LED string to LED string, as the case may be).

Abstract: PWM-based dimming techniques are provided for lighting systems. The techniques can be used to eliminate or otherwise reduce the potential for strobing and flickering, and may be implemented, for example, in a driver suitable for powering LED lighting systems, but can be used with other suitable light sources as well. In an example embodiment, the potential for line frequency induced flicker, or even line disturbances that are periodic with the line frequency, can be eliminated or reduced by synchronizing the PWM frequency to the line frequency or so-called mains frequency, and the potential for strobing can be eliminated or reduced by either using a randomized phase angle on a cycle-to-cycle basis or by using multiple PWM LED drive circuits all having constant cycle-to-cycle phase angle but a different phase angle from drive circuit to drive circuit (or different from LED string to LED string, as the case may be).

Abstract: Various embodiments may relate to a lighting system including a Power Supply Unit and at least one Light Engine Module, with an interface between the Light Engine Modules and the Power Supply Unit. The Light Engine Modules send pulses representing their current demand to the Power Supply Unit adjusting the output current accordingly. The Light Engine Modules are connected in parallel, and the pulse sequences are sent at the same time. Measures are taken to cope with interfered pulses.

Abstract: An electronic control gear for operating at least one of at least one LED and at least one discharge lamp is provided. It may include a first terminal for coupling to a phase of an AC voltage supply; a second terminal for coupling to the neutral conductor of the AC voltage supply; a control input for coupling in a control signal of a control apparatus; a first output for coupling to the LED; a second output for coupling to the discharge lamp; a first driver circuit for the LED; a second driver circuit for the discharge lamp; an evaluation apparatus for evaluating the control signal at the control input, the evaluation apparatus comprising a microcontroller, which activates said driver circuits depending on the control signal, wherein a first capacitance is coupled between the second terminal and the control input.

Abstract: An electronic control gear for operating at least one of at least one LED and at least one discharge lamp is provided. It may include a first terminal for coupling to a phase of an AC voltage supply; a second terminal for coupling to the neutral conductor of the AC voltage supply; a control input for coupling in a control signal of a control apparatus; a first output for coupling to the LED; a second output for coupling to the discharge lamp; a first driver circuit for the LED; a second driver circuit for the discharge lamp; an evaluation apparatus for evaluating the control signal at the control input, the evaluation apparatus comprising a microcontroller, which activates said driver circuits depending on the control signal, wherein a first capacitance is coupled between the second terminal and the control input.

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: 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 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: The invention relates to a dielectric barrier discharge lamp having outer electrodes which have ends in the form of plug connection elements.

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: A lighting system has a discharge lamp (2), and an associated electronic ballast (1), a printed circuit board (3) on one side bearing outer electrodes for the discharge vessel (5, 6, 7) and on the other side being used for mounting the ballast (1).

Abstract: The invention relates to a converter circuit having a series circuit of class E converter modules for optimizing the DC supply voltage of the individual converter module (for example C7, C11, Z1, S1, L1, L2).

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 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: A ballast and its operating method for a dielectrically impeded discharge lamp. The ballast contains a transformer having a third winding which can be short-circuited via a switch. By so doing, the injection of the voltage pulse into the lamp circuit may be controlled by an external trigger signal.