Abstract: An electroluminescent device (7) comprising at least one electroluminescent light source (2) and at least one electronic component (3) for driving the electroluminescent light source (2), which electronic component (3) is arranged in such a way as to be separated in space from the electroluminescent light source (2), the electrical connection between the electroluminescent light source (2) and the electronic component (3) being made by a flexible film (8) having electrically conductive regions (82) and at least one electrically insulating surface (81).

Abstract: Usually, power supplies are not capable of switching off part of the outputs of a main power supply during stand-by. Due to this, stand-by power supplies are used in addition to operation power supplies. Consistent with an example embodiment, a forward converter is provided, including switches in the rectifier circuit thereof. Due to this, the rectifier circuits may be selectively switched on and off. Advantageously, this may allow that the main outputs of such a forward converter are switched off while on stand-by.

Abstract: An occurrence of an operation of a device (1) is detected by a sensor (6). The operation itself, or its true occurrence, is detected, not a command to activate the operation. The time of said occurrence is measured, accumulated and, on demand, represented. Said occurrence can be sensed from any part of the device (1) of which a property changes upon the occurrence of said operation.

Abstract: A control unit (2) of a remote control receiver sets the forward or reverse direction operating mode of the photodiode (1) as a function of the useful signal level of its output signal, and to be precise, during standby, the photovoltaic operating mode (forward mode), since in this mode no external bias current is required. If the useful signal level of the photodiode (1) exceeds a predefined threshold, the reverse mode is set, and this brings with it a higher sensitivity. A series circuit (A) of a number of identical photodiodes DA1 DAn the forward mode allows the realization of a controlled current source (6) having a transistor (T), since the permissible diode voltage (Ud) of the overall arrangement may have n times the value of the operating voltage of an individual photodiode. Thus at the same time the voltage across the individual diodes can be set to a very low value and a favorable operating range for the current source can be set.

Abstract: In a switching DC converter with a resonant circuit output stage, the energy remaining in the resonant circuit for switching the switches of the converter in an inductive mode of operation is used to control the phase of switching. The turn-on phase of each switch is controlled to assure zero voltage switching, and the turn-off phase of each switch is controlled to assure that the resonant circuit has sufficient energy to provide this zero voltage switching.

Abstract: The invention describes a method of transmitting information between an information transmitter and an information receiver, the potential difference of which moves in cycles between a minimum value and a maximum value and is situated at the minimum value for regular intervals; having the steps: provision of information over the time interval or determining the time interval in which the potential difference between information transmitter and information receiver assumes its minimum value; closing of a switching means of the information transmitter in relation to an information memory assigned to the information receiver, only within the time interval; and transmission and storage of the information in the information memory.

Abstract: In a wire-bound network which comprises unshielded lines such as power supply lines, electromagnetic radiation is produced when transmitting data above the mains frequency. The device according to the invention comprises active means for reducing or eliminating the common-mode current (I-cm). To this end, these active means generate an artificial dissymmetry which is complementary to that of the network and is measured continuously or periodically.

Abstract: The invention describes a system for electrical transmission in the field of garments and a corresponding transmitter for this. Electrical circuits in garments are coupled, preferably inductively in a wireless manner with electrical devices and/or electrical circuits in other garments, wherein electrical energy is transmitted via the coupling. Energy transmission in both directions is preferably possible, wherein a distributed system results with sources and devices that can be coupled with each other. The efficiency of the inductive energy transmission is increased by regulation of the frequency, preferably using resonance. In addition, means for information transmission are proposed.

Abstract: A DC—DC converter includes an inverter and a primary-side circuit with a transformer whose secondary-side voltage is rectified by at least one rectifier for generating an output DC voltage. To avoid an asymmetrical load, which is in particular exhibited by a different load of the rectifier elements (power semiconductors), an electrical magnitude of the DC—DC converter is measured. This magnitude may be, for example, a primary-side current, a primary-side voltage at a capacitance, or a secondary-side, rectified voltage. A parameter for the symmetry deviation is calcuted from the measurement of the magnitude. A symmetry regulation arrangement utilizes the drive of the inverter, for example, the duty cycle of the pulse-width modulated voltage produced by the inverter to minimize the parameter for the symmetry deviation. This achieves an even distribution of the power over the secondary rectifier elements.

Abstract: A circuit for converting an AC voltage into a DC voltage for a device (RL), in which the AC voltage supplied is passed through a large induction coil (L50) and a rectifier (G), includes, on the output side the rectifier (G), two capacitors (C1, C2) connected in parallel, which are separated by a diode (D). In addition, the capacitor C1 positioned closer to the rectifier (G) is discharged, at least in part, via an active converter (20) in the second half of each power supply wave. As a result of which, the current consumption is widened and the system harmonics are reduced. Furthermore, the induction coil (L50) can be dimensioned correspondingly smaller, but can nevertheless meet the relevant standards.

Abstract: A DC-DC converter, a regulation method for a DC-DC converter and a switched-mode power supply are proposed. The DC-DC converter comprises an inverter and a primary-side circuit with a transformer whose secondary-side voltage is rectified by at least one rectifier for generating an output DC voltage. To avoid an asymmetrical load, which is in particular exhibited by a different load of the rectifier elements (power semiconductors), an electrical magnitude of the DC-DC converter is measured. This magnitude may be, for example, a primary-side current, a primary-side voltage at a capacitance, or a secondary-side, rectified voltage. From the measurement of the magnitude is calculated a parameter for the symmetry deviation for which different symmetry measuring methods are proposed. A symmetry regulation arrangement utilizes the drive of the inverter, for example, the duty cycle of the pulse width modulated voltage produced by the inverter to minimize the parameter for the symmetry deviation.

Abstract: The invention relates to a standby circuit, an electrical device with a standby circuit, a method for the control of the electrical device and a power supply assembly. Whereas the power supply unit and the control electronics are in permanent operation when conventional devices are in the standby mode and consequently have a high power consumption, the invention proposes a solution for saving energy while retaining convenience of operation by which the power supply unit is switched off in the standby mode. A standby circuit, preferably fed by an energy buffer element, remains active in the standby mode and monitors signal inputs for activation events. When an activation event occurs, the standby circuit switches on the power supply unit.

Abstract: The invention relates to a circuit for converting AC voltage into DC voltage for a consumer (RL), in which the AC voltage supplied is passed through a large induction coil (L50) and a rectifier (G). On the output side the rectifier (G) has two capacitors (C1, C2) connected in parallel, which are separated by a diode (D). In addition, the capacitor C1 positioned closer to the rectifier (G) is discharged at least in part via an active converter (20) in the second half of each power supply wave, as a result of which the current consumption is widened and the system harmonics are reduced. Furthermore, the induction coil (L50) can be dimensioned correspondingly smaller, but can nevertheless meet the relevant standards.

Abstract: The invention describes a system for electrical transmission in the field of garments and a corresponding transmitter for this. Electrical circuits in garments are coupled, preferably inductively in a wireless manner with electrical devices and/or electrical circuits in other garments, wherein electrical energy is transmitted via the coupling. Energy transmission in both directions is preferably possible, wherein a distributed system results with sources and devices that can be coupled with each other. The efficiency of the inductive energy transmission is increased by regulation of the frequency, preferably using resonance. In addition, means for information transmission are proposed.

Abstract: The invention relates to a circuit for converting AC voltage in DC voltage for one or two consumers (Rm, Ra), in which a first part of the current is led via a large induction coil (L50) and a first rectifier (Gm) and a second part of the current via a second rectifier (Ga) before the large induction coil in the input side. As a result of the division of the supplied current the induction coil (L50) can be dimensioned accordingly smaller for smoothing the output voltage and, despite this, the circuit can at the same time satisfy relevant standard specifications.

Abstract: A converter includes circuit elements for chopping a DC voltage, in which switch-on phases of the circuit elements are alternating. A circuit assembly with resonant elements is used for processing the chopped DC voltage and for producing an output voltage. The voltage present at one of the circuit elements is compared with a threshold in a dead time phase before the circuit element is switched on. The comparison result is used to determine whether an inductive or capacitive converter load is present. Alternatively, a differential quotient of the voltage present at one of the circuit elements during the dead time phase is used to determine whether an inductive or capacitive converter load is present.

Abstract: The invention relates to a converter comprising resonant circuit elements (S1, S2) for chopping a DC voltage (U1), in which switch-on phases of the circuit elements (S1, S2) are alternating, and comprising a circuit assembly (5) with resonant circuit elements (Cr, Lr) which is used for processing the chopped DC voltage (U3) and for producing an output voltage (U2).

Abstract: The invention relates to a converter comprising switching elements for chopping a direct voltage, in which turn-on phases of the switching elements alternate with one another, and comprising a circuit arrangement with resonant circuit elements processing the chopped direct voltage and serving for the supply of an output voltage. To improve such a converter in such a way that zero voltage switching (ZVS) can be ensured in an extended range of converter operations with possibly inexpensive converter modifications, it is proposed that the length of the dead-time phases, which are present between two consecutive turn-on phases and during which the switching elements are turned off, is automatically adapted so that switching losses, which occur particularly when the switching elements are turned on, can be minimized.