Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen Mbh

Osram Gesellschaft MIT Beschraenkter Haftung

Patent-treuhand-gesellschaft Fuer Elektrische Gluehlampen Mbh

Osram Ag

Patent-treuhand-gesellschaft F. Elektrische Gluehlampen Mbh

Osram Gmbh

Osram Gesellschaft MIT Beschrankter Haftung

Clay Paky S.p.a.

Siemens Aktiengesellschaft

Bsh Hausgerate Gmbh

Patent-treuhand-gesellschaft Fur Elektrisch Gluhlampen Mbh

Patent-treuhand-gesellschaft Fuer Gluehlampen Mbh

Patent-treuhand-gesellschaft Fur Elektrische

Clay Paky S.r.l.

Andreas Huber

Peter Niedermeier

Christian Breuer

Bernhard Reiter

Franz Bernitz

Axel Pilz

Alwin Veser

Walter Limmer

Simon Lankes

Josef Osterried

Ralf Hying

Frank Hansmann

Oskar Schallmoser

Guenther Hirschmann

Aris Quadri

Martin Brueckel

Gotthard Schleicher

Martin Brückel

Alberto Alfier

Henning Rehn

Dieter Lang

Günther Hirschmann

Martin Honsberg-Riedl

Michael Boenigk

Thomas Mudra

Kai Wolter

Herbert Kästle

Markus Baier

Wolfram Graser

Burkhard Ulrich

Ralf Weidemann

Wolfgang Langgabner

Shokrollah Norali-Ghasemi

Martin Niedermaier

Hendrik Kornatz

Friedrich Witzani

Florian Heike

Andreas Osten

Martin BRÜCKEL

Helmut Häusser

A cooking appliance includes a cooktop including an energy transmission unit for transmitting energy in order to heat a place-on appliance placed on the cooktop, and a PEF ('Pulsed Electric Fields') cooking apparatus including a receptacle accessible from a top side of the cooktop and designed for insertion of a PEF container. The receptacle includes a connection contact for electrically connecting to the PEF container inserted in the receptacle.

Cooking appliance having a PEF generator, PEF system and method

A light fixture may include a casing and a support assembly configured to support and move the casing. The light fixture may include a light source assembly housed inside the casing and configured to generate visible light radiation of different colours. The light fixture may further include a control device configured to control the light source assembly based on the position or the movement of the casing or based on a parameter correlated to the position or the movement of the casing.

Light fixture and method for operating said light fixture

A light fixture may include a light source assembly configured to generate visible light radiation of different colours, an optical device configured to process at least a portion of the light radiation emitted by the light sources so as to form a light beam extending substantially along an optical axis, and at least one beam processing element located downstream of the optical device and configured to selectively intercept the light beam. The beam processing element may include at least one portion movable between several positions. The light fixture may include a control device configured to control the light source assembly either on the basis of the position of a movable portion of the beam processing element or on the basis of a parameter correlated to the position of the movable portion of the beam processing element.

A circuit arrangement for operating a high-pressure discharge lamp with an operating circuit for the high-pressure discharge lamp with an input for receiving a switch-on/switch-off signal for the high-pressure discharge lamp and at least one output for providing an operating signal to the high-pressure discharge lamp, wherein the operating circuit is designed to reduce the power of the operating signal provided at the at least one output once a switch-off signal has been received at its input, wherein the operating circuit furthermore designed to provide the operating signal as an AC signal above a predeterminable power threshold value and as a quasi DC signal below the predeterminable power threshold value.

Circuit assembly and method for operating a high pressure discharge lamp

A lighting system comprising a first light source, which is adapted to generate light of a first color, and at least one second light source, which is adapted to generate light of a second color, wherein the light sources are driven so as to generate a predeterminable color sequence, wherein the light sources are operated by a common control unit and driven by said control unit in the sequence required for generating the predeterminable color sequence. The light sources are connected in parallel and are electrically coupled to an energy supply unit via a first circuit node. The lighting system comprises a regulator unit and coupled to the control unit via a signal line, and wherein the control unit is adapted to predetermine a desired energy output of the energy supply unit via the regulator unit, to be precise depending on the individual color within the color sequence.

Lighting system and method for operating a lighting system

In various embodiments, a dimmable operating device for the combined operation of a gas discharge lamp and a semiconductor light source is provided. The dimmable operating device may be configured such that only the semiconductor light source is operated in the lower dimming range and only the gas discharge lamp is operated in the upper dimming range, and at the changeover points at which one sort of light source out of the semiconductor light source and the gas discharge lamp is switched off or on, at the same time a jump in power is applied to the other light source out of the semiconductor light source and the gas discharge lamp, with the result that the human eye cannot perceive, or can only perceive with difficulty, the changeover point.

Operating device and method for the combined operation of gas discharge lamps and semiconductor light sources

A circuit arrangement for operating a discharge lamp is provided. The circuit arrangement may include a commutating device, which is configured to exhibit an input which is coupled to a direct-current source and has an output which can be coupled to a discharge lamp; the commutating device being configured in such a manner that it couples the direct-current source to the output and the polarity with which the direct-current source is coupled to the output can be commutated by a control device; the control device including a measurement input which is coupled to a measuring device which is configured to deliver a measurement value which is a measure of the magnitude of a lamp voltage; wherein the control device is configured to control the commutating device in such a manner that the polarity at which a higher lamp voltage prevails is coupled longer to the output.

Circuit arrangement for operating discharge lamps and method for operating discharge lamps

An inductor may include an electrical conductor for generating a magnetic field; and at least one inductor core unit which is arranged in the region of the conductor and includes an inductor core composed of a magnetizable material and also at least one air gap, a filling material being introduced at least into part of the air gap for the purpose of mechanical stabilization, wherein the filling material is configured in such a way that it has a coefficient of thermal expansion, the value of which lies in a range of &#xb1;70% of the value of the coefficient of thermal expansion of the magnetizable material of which the inductor core is composed.

Inductor and method for production of an inductor core unit for an inductor

The invention relates to a novel operating method and corresponding ballast for illuminating systems having temporally sequential color filtering and a high-pressure discharge lamp operated by alternating current. In this case, at least three commutations of the lamp current are used within a color filtering sequence, in order to be able to operate the lamp advantageously without an excessive increase in the operating frequency of the color filter system.

Illuminating system having sequential color filtering and a high-pressure discharge lamp

A circuit arrangement for the closed-loop control of the current through at least one discharge lamp may include a control loop including: a setpoint value input for supplying a setpoint value; an actual value input for supplying an actual value; and an output for providing a signal, which has been correlated with the current through the at least one discharge lamp, the actual value having been correlated with the value of the current through the discharge lamp; and a setpoint value input apparatus, which is designed to provide the setpoint value to the control loop; wherein the setpoint value input apparatus includes: a microprocessor with at least one input, the microprocessor being designed to couple the at least one input to a potential from a group of at least two different potentials; and a wiring apparatus with at least one input, which is coupled to the at least one input of the microprocessor, and at least one output, which is coupled to at least one point of the control loop.

Circuit arrangement and method for regulating the current through at least one discharge lamp

An illumination device may include a flexible printed circuit board; a power electronics module; and a light-emitting diode module, which is electrically connected to the power electronics module by means of the flexible printed circuit board.

Illumination device and projection device with such an illumination device

A circuit arrangement for starting a discharge lamp, comprising: a first and a second input terminal for connecting an input voltage; an inverter, which has an input and an output, the input being coupled to the first and the second input terminal; a first and a second output terminal for connecting the discharge lamp; a resonant inductor, which is coupled between the output of the inverter and the first output terminal; a resonant circuit, which comprises the resonant inductor; a regulating apparatus for regulating the frequency of the signal provided at the inverter output; and a current measuring apparatus, which is arranged so as to measure a current which is correlated with the current in the resonant circuit, wherein the regulating apparatus is adapted to regulate the frequency at the output of the inverter as a function of the measured current.

Circuit arrangement for firing a discharge lamp

A circuit arrangement for operating a high-pressure discharge lamp () with an electronic ballast, which is designed to provide an AC feed signal for the high-pressure discharge lamp (). The AC feed signal comprises, in the time range as modulation period (T), a serial sequence of at least one first signal section (Sa), one second signal section (Sa) and one third signal section (Sa), which are associated with a first, a second and a third color. The AC feed signal is an amplitude-modulated RF signal (I) with a frequency (f) of at least 500 kHz. The following applies for the envelope (E) of the signal components with a positive and/or negative amplitude: the absolute value of the envelope (E) has a mean amplitude (M); and the first signal section (Sa) and/or the second signal section (Sa) and/or the third signal section (Sa) has/have at least one temporal range in which the absolute value of the envelope (E) is between 5% and 100% greater than the mean amplitude and/or in which the absolute value of the envelope (E) is between 5% and 90% less than the mean amplitude (M).

Circuit arrangement and method for operating a high-pressure discharge lamp

A light source () is disclosed, emitting multi-colored light with light of at least two different colors, emitted from a number of primary light sources () wherein the primary light sources () are divided into groups and the brightness values of the primary light sources () within a group are determined and controlled separately according to color, such that the color location of the multi-colored light lies in a given region of the CIE standard color diagram. The invention further relates to a method for controlling such a light source () and an illumination device with such a light source (), for example, for backlighting a display.

Light source emitting mixed-colored light and method for controlling the color locus of such a light source

A circuit arrangement for operating a discharge lamp, wherein the circuit arrangement comprises a commutation device, which has an input which is coupled to a DC source, and has an output which can be coupled to a discharge lamp. The commutation device is designed in such a way that it couples the DC source to the output, and the polarity at which the DC source is coupled to the output can be commutated by a control device. The control device has a sync input, and the polarity of the DC source is commutated in synchronism with sync pulses of a sync signal which can be applied at the sync input. The control device has a measuring input, which is coupled to a measuring device which is designed to provide a measured value which is a measure of the size of electrode peaks. The control device suppresses at least one commutation if the measured value overshoots or undershoots a predetermined threshold value.

Circuit arrangement for operation of discharge lamps, and method for operation of discharge lamps

Growing community of inventors

Maisach, Germany

Andreas Huber