Diehl Aerospace Gmbh

Diehl Luftfahrt Elektronik Gmbh

Jens Jordan

Uwe Nieberlein

Stefan Dobler

Guenther Koeninger

Tobias Kolb

Günther KÖNINGER

A lighting strip for an aircraft interior is provided. The lighting strip has a connection for a network voltage, a rectifier for rectifying the network voltage into a power supply voltage, and a circuit board extending along a longitudinal extension of the lighting strip. Multiple LEDs are arranged on the circuit board and powered by the power supply voltage. A controllable current sink arrangement, having multiple individual sink devices connected electrically in parallel with one another, is provided for converting electrical energy transported via the connection into heat. The individual sink devices are distributed on the circuit board along the longitudinal extension of the circuit board. The sink devices are controlled by a control apparatus independently from the operative conditions of the LEDs to provide a homogenously distributed thermal profile of the lighting strip.

Lighting strip for an aircraft interior and aircraft interior equipment with a plurality of lighting strips

An electrical supply apparatus is provided. The apparatus has an input for connecting the electrical supply apparatus to a power supply system, an output for connecting the electrical supply apparatus to a load, a rectifier for rectifying the input voltage into a rectified input voltage, and a PFC module for smoothing the rectified input voltage. The PFC module also has an active power factor correction device for shaping a time-dependent supply current, such that a time-dependent input current into the PFC module is matched to a time-dependent current waveform signal. A control module is provided for generating the current waveform signal. The control module generates the current waveform signal during the operation of the electrical supply apparatus independently of the input voltage and temporally synchronizes the current waveform signal with the input voltage or a derivative of the input voltage.

Electrical supply apparatus with current waveform signal and method for operating the electrical supply apparatus

An LED lighting apparatus is provided. The apparatus has an LED luminous unit having multiple plurality LEDs and a switching arrangement. The LED luminous unit has different forward voltages in different switching states. The apparatus also has a control device for driving the LED luminous unit and a current sink device in a normal operating mode, in which the forward voltage and the LED current of the LED luminous unit are adapted to an instantaneous value of a supply voltage. An energy storage module of the apparatus provides a storage voltage and supplies the storage voltage to the LED luminous unit. The control device drives the LED luminous unit and the current sink device in a storage operating mode, such that the forward voltage and the LED current of the LED luminous unit are adapted to an instantaneous value of the storage voltage.

LED lighting apparatus comprising an energy storage module and method for operating the LED lighting apparatus

In comparison with thermal light sources, LED lighting has the advantage that it is very small and at the same time commercially available in different colors, so that colored lighting can be produced inexpensively and at the same time in a manner that saves installation space. It is an object of the present invention to equip an LED lighting apparatus with a color mixing functionality that is distinguished by high efficiency and at the same time a small number of components.

LED lighting apparatus with colour mixing

An LED lighting device for supplying a main voltage by an AC power supply is provided. The device has a rectifier for producing a rectified AC voltage from the main voltage, an LED light unit having multiple of LEDs and a circuit arrangement, and a control device for controlling the circuit arrangement. The circuit arrangement switches the LEDs to different circuit states, in which the LED light unit has different forward voltages. The control device controls the circuit arrangement, in such a way that the forward voltage of the LED light unit is adjusted to the voltage profile of the rectified AC voltage. The device also has a modelling device for modelling a modelled voltage profile. The control device controls the circuit states based on the modelled voltage profile. The modelled voltage profile is modelled based on measured variables for describing the real voltage profile of the main voltage.

LED lighting device with modelling device for modelling a voltage profile

An LED lighting device for AC voltage supply is provided. The device has LEDs that form a whole chain. The LEDs are divided into LED part groups. The device also has multiple serial switching means, multiple shorting links and a control means. The control means is configured to control the shorting links and the serial switching means, to place the whole chain in at least two switch states. The switch states differ in the through voltage of the whole chain.

LED lighting device with LED profile and method for operating the LED lighting device

A method for monitoring and controlling a plurality of series-connected capacitance, wherein at least during the discharge of the capacitances, there is determined a voltage of every capacitance, and in the instance of a drop-off of a voltage of one of the capacitances below a first threshold voltage of this capacitance, the capacitance is bridged over to at least the end of the discharge. Also provided are devices for determining every voltage of every capacitance, devices for symmetrizing voltages among the capacitances, and devices for the deactivation of at least one of the capacitances.

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Nuremberg, Germany

Jens Jordan