Abstract: A clocked electronic energy converter having an electronic switching element, at least two electrical energy storage devices, a terminal for connecting an electrical energy source, a terminal for connecting an electrical energy sink, a clock generator for controlling and operating the electronic switching element during switching operation and an adjusting unit which provides a first signal for adjusting the power-to-be-transmitted by the energy converter, is disclosed. The clock generator is designed to adjust the power-to-be-transmitted by the energy converter in a first output range by means of the switch-on time of the electronic switching element and, in a second output range in which the power-to-be-transmitted by the energy converter is less than in the first output range, to adjust the power-to-be-transmitted by the energy converter in the second output range by a combination of the switch-on time and the supplemental switch-off time, the supplemental switch-off time being constant.

Abstract: According to the present disclosure, a circuit arrangement for operating semiconductor light sources includes: a power input for inputting an AC input voltage, an output having a first output terminal, and a second output terminal, which is designed to connect a string of semiconductor light sources, a control input for controlling the operation of the circuit arrangement with a control signal, a rectifier circuit for converting the AC input voltage into a rectified voltage, a converter circuit for transforming the rectified voltage into a current which is suitable for the semiconductor light sources, a first switch arranged between the converter circuit and the output, for the switching of the current through the semiconductor light sources, and a first diode arranged between the first switch and the output, or between the converter circuit and the first switch.

Abstract: A clocked electronic energy converter having an electronic switching element, at least two electrical energy storage devices, a terminal for connecting an electrical energy source, a terminal for connecting an electrical energy sink, a clock generator for controlling and operating the electronic switching element during switching operation and an adjusting unit which provides a first signal for adjusting the power-to-be-transmitted by the energy converter, is disclosed. The clock generator is designed to adjust the power-to-be-transmitted by the energy converter in a first output range by means of the switch-on time of the electronic switching element and, in a second output range in which the power-to-be-transmitted by the energy converter is less than in the first output range, to adjust the power-to-be-transmitted by the energy converter in the second output range by a combination of the switch-on time and the supplemental switch-off time, the supplemental switch-off time being constant.

Abstract: A clocked electronic energy converter may include an electronic switching element, at least two electrical energy storage devices, connections for connecting an electrical energy source and for connecting an electrical energy sink, a clock generator for controlling the electronic switching element and a switch-on time unit for generating a first signal for the clock generator, which switch-on time unit sets the power of the energy converter to be transmitted in a first power range by the first signal. The switch-on time unit generates a first signal representing a switch-on time for the clock generator in a second power range in which the power lower can be set than in the first power range, and the clocked electronic energy converter has a switch-off time unit generating in the second power range a second signal for the clock generator, which signal represents a switch-off time depending upon the power to be transmitted.

Abstract: According to the present disclosure, a circuit arrangement for operating semiconductor light sources includes: a power input for inputting an AC input voltage, an output having a first output terminal, and a second output terminal, which is designed to connect a string of semiconductor light sources, a control input for controlling the operation of the circuit arrangement with a control signal, a rectifier circuit for converting the AC input voltage into a rectified voltage, a converter circuit for transforming the rectified voltage into a current which is suitable for the semiconductor light sources, a first switch arranged between the converter circuit and the output, for the switching of the current through the semiconductor light sources, and a first diode arranged between the first switch and the output, or between the converter circuit and the first switch.

Abstract: A two-stage clocked electronic energy converter for transmitting an electrical power may include a first connection for connecting an electrical energy source, a second connection for connecting a load, and an intermediate circuit capacitor, wherein a first stage of the energy converter has a first converter in the boost operating mode, which first converter converts an electrical voltage at the first connection into an electrical intermediate circuit voltage at the intermediate circuit capacitor, and wherein the intermediate circuit capacitor supplies a second stage of the energy converter, which second stage supplies the load with electrical energy controllably in terms of the power, wherein a control unit sets the power drawn from the intermediate circuit capacitor by the second stage in such a way that an instantaneous minimum of the intermediate circuit voltage that is brought about by the drawing of power is greater than a predefined voltage comparison value.

Abstract: A clocked electronic energy converter may include an electronic switching element, at least two electrical energy storage devices, connections for connecting an electrical energy source and for connecting an electrical energy sink, a clock generator for controlling the electronic switching element and a switch-on time unit for generating a first signal for the clock generator, which switch-on time unit sets the power of the energy converter to be transmitted in a first power range by the first signal. The switch-on time unit generates a first signal representing a switch-on time for the clock generator in a second power range in which the power lower can be set than in the first power range, and the clocked electronic energy converter has a switch-off time unit generating in the second power range a second signal for the clock generator, which signal represents a switch-off time depending upon the power to be transmitted.

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: An electronic ballast for an electrical lamp (2) provided with a first (21) and a second filament (22), includes a heating device which is used to heat the filaments (21, 22) and includes a resonance circuit (5), and an evaluation unit (11) designed for the evaluation of at least one measuring value of an electrical parameter during pre-determinable adjustments of operating conditions of the resonance circuit (5). The number of filaments (21, 22) of the electrical lamp (2) in electrical contact with the electronic ballast (1) can be identified according to the measuring value, and the electrical lamp (2) can be switched on by the electronic ballast (1) according to the identified number. A method for operating an electrical lamp by an electronic ballast is also described.

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: A method for detecting a statistical characteristic of a lighting device is provided. The method may include a) generate a random number within a prescribable value range; b) compare the random number with a comparison number; c) c1) if the comparison of step b) yields a match: increase the count of a storage device by one step width.

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: 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: 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: The present invention relates to a method for detecting a static index of a lighting device (10; 12), comprising the following steps: a) generating a random number within a predefinable value range (step 120; step 220); b) comparing the random number to a comparison number (step 140; step 260); c) C1) if the comparison of step b) results in a correspondence: increasing the count of a storage device (20) by one step width (step 160; step 280). In addition, it relates to a corresponding device for detecting a static index of a lighting device (10; 12).

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: 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.