Abstract: A retrofit tubular lighting device (7), comprising first (p1, p2) and second connection pins (p3, p4), a first (12) and second filament emulation circuit (13) coupled to the first (p1, p2) and second connection pins (p3, p4) respectively, a lighting element (4), a driver (3) coupled to the first (12) and second filament emulation circuit (13), a battery (5) and the lighting element (4). The driver (3) provides a charge to the lighting element (4) and the battery (5). The battery (5) stores the charge provided by the driver (3) and provides charge to the lighting element (4). A communication device sends a first charging signal to another lighting device comprising a further battery and coupled to the electronic ballast, when the charge of the battery (5) is below a first threshold. The communication device receives a second charging signal from the other lighting device, wherein the second charging signal indicates that a further charge of the further battery is below a second threshold.

Abstract: A lighting device (100) is provided. The lighting device (100) includes a first circuit board (110), including at least a first light emitting element (130) and a second light emitting element (132) mounted thereon. The lighting device also includes a second circuit board (120) which comprises an aperture (140). The second circuit board is arranged relative to the first circuit board such that the aperture is positioned to match a position of the first light emitting element but not a position of the second light emitting element. The lighting device further includes a sensor and/or antenna (150), wherein at least a part of the sensor and/or antenna is provided on a portion (121) of the second circuit board which extends between the first light emitting element and the second light emitting element.

Abstract: A retrofit tubular lighting device (7), comprising first (p1, p2) and second connection pins (p3, p4), a first (12) and second filament emulation circuit (13) coupled to the first (p1, p2) and second connection pins (p3, p4) respectively, a lighting element (4), a driver (3) coupled to the first (12) and second filament emulation circuit (13), a battery (5) and the lighting element (4). The driver (3) provides a charge to the lighting element (4) and the battery (5). The battery (5) stores the charge provided by the driver (3) and provides charge to the lighting element (4). A communication device sends a first charging signal to another lighting device comprising a further battery and coupled to the electronic ballast, when the charge of the battery (5) is below a first threshold. The communication device receives a second charging signal from the other lighting device, wherein the second charging signal indicates that a further charge of the further battery is below a second threshold.

Abstract: The invention provides a conversion circuit for a lamp. The conversion circuit converts first signals, from a ballast, into second signals, for a lighting arrangement. The conversion circuit comprises a transformer having characteristics which contribute to a desired conversion of the first signals to the second signals. The transformer, formed of a first winding and a second winding, further provides an isolated power supply for an auxiliary device connected to the second winding.

Abstract: A retrofit Light Emitting Diode, LED, lighting device for connection to an electronic ballast is presented. Wherein the LED lighting device comprises a steady state mode during which it emits light and a standby mode during which it is not emitting light. The retrofit LED lighting device comprises an LED array for emitting light during said steady state mode; an alternating current, AC, LED driver arranged for receiving an AC supply voltage, from said electronic ballast during said steady state mode and for driving said LED array based on said received AC supply voltage. It also comprises of a filament circuit arranged for receiving said AC supply voltage from said electronic ballast and for supporting a filament current circulating back to said electronic ballast for indicating a presence said lighting device to said electronic ballast, and a lamp current to said AC LED driver for driving said LED array for emitting said light during said steady state mode.

Abstract: The invention relates to a power distribution system comprising a power providing device (3) for providing power and a powered device (4, 5, 6) like a luminaire to be powered by the power providing device. The power providing device and the powered device are operable in a maximum power mode and a normal operation mode, wherein in the maximum power mode the powered device consumes an amount of power maximally consumable by the powered device and the power providing device measures the power consumed by the powered device. This measured power allows for an allocation of an amount of power in the operational mode, which is really maximally needed, wherein it is not necessary to allocate a larger amount of power, which is large enough to consider, for instance, a maximally assumed length of an electrical connection (8) connecting the devices, thereby improving the power budget allocation.

Abstract: The invention relates to a power splitter for a variable number of loads, a power splitting method for a variable number of loads and a software product for power splitting. It is possible to provide power splitting for a variable number of loads, which allows for an efficient distribution of power while reducing unnecessary overhead, with the determination of an overall power demand for the variable number of loads being concentrated in the power splitter, which may then request the desired amount of power from the power supply.

Abstract: A power receiver device including: a pair of receiver electrodes (341, 342) for capacitively coupling with the pair of transmitter electrodes (321, 322) placed on one side of a surface; and a deformable transfer layer (371, 372) placed between each of the pair of the receiver electrodes and another side of the surface. A power signal generated by the power driver (110) is wirelessly transferred from the pair of transmitter electrodes (321, 322) to the pair of receiver electrodes (341, 342) to power a load (150) in the power receiver device.

Abstract: The invention relates a system for controlling distribution of power to load elements via network connections (e.g. LAN). Low cost luminaires or other load elements can be powered via LAN connections (e.g. by power over Ethernet (PoE)) without featuring an Internet Protocol (IP) node. This is attractive because with such a system the installation cost down benefits of PoE can be applied also to installations that do not require advanced controls. This means that to switch them on or off, the power supply on the LAN port of the switch must be enabled or disabled. When load elements and load controllers (e.g. lighting controllers or light switches) are connected to the same switch, they are automatically paired to each other. This can be achieved through use of a network management protocol capability that some network switches have. This allows for easy installation and automatic intuitive commissioning.

Abstract: An article of manufacture for supplying a power to a load connected in a capacitive power transfer system comprises a sheet (210) of a non-conductive material; and a plurality of conductive stripes (220), each two adjacent conductive stripes being electrically insulated from each other, wherein the sheet forms an insulating layer of the capacitive power transfer system and the plurality of conductive stripes form at least a pair of transmitter electrodes of the capacitive power transfer system.

Abstract: Various receiver electrodes for supplying power to a load connected in a capacitive power transfer system are disclosed. In one embodiment, the receiver electrodes include a first conductive plate connected to a first sphere-shaped hinge, wherein the first sphere-shaped hinge is coupled to a first receiver electrode; and a second conductive plate connected to a second sphere-shaped hinge, wherein the second sphere-shaped hinge is coupled to a second receiver electrode, the second receiver electrode being connected to an inductor of the capacitive power transfer system and the first receiver electrode being connected to the load, the inductor being connected to the load to resonate the capacitive power transfer system.

Abstract: Various receiver electrodes for supplying power to a load connected in a capacitive power transfer system are disclosed. In one embodiment, the receiver electrodes include a first conductive plate (212) connected to a first sphere-shaped hinge (211), wherein the first sphere-shaped hinge is coupled to a first receiver electrode (210); and a second conductive plate (222) connected to a second sphere-shaped hinge (221), wherein the second sphere-shaped hinge is coupled to a second receiver electrode (220), the second receiver electrode being connected to an inductor of the capacitive power transfer system and the first receiver electrode being connected to the load, the inductor being connected to the load to resonate the capacitive power transfer system.

Abstract: A direct current (DC) to alternating current (AC) wireless converter apparatus (200) for supplying power to a load connected in a capacitive power transfer system. The apparatus comprises at least two connectors (201, 202) enabling a galvanic contact to at least two supply lines (211, 212) of a DC grid; a driver (203) coupled to the connectors (201, 202) and configured to generate an AC power signal from an input DC signal fed by the at least two connectors, wherein a frequency of the AC power signal substantially matches a series-resonance frequency of the capacitive power transfer system; and at least a pair of transmitter electrodes (204, 205) connected to an output of the driver.

Abstract: A direct current (DC) to alternating current (AC) wireless converter apparatus (200) for supplying power to a load connected in a capacitive power transfer system. The apparatus comprises at least two connectors (201, 202) enabling a galvanic contact to at least two supply lines (211, 212) of a DC grid; a driver (203) coupled to the connectors (201, 202) and configured to generate an AC power signal from an input DC signal fed by the at least two connectors, wherein a frequency of the AC power signal substantially matches a series-resonance frequency of the capacitive power transfer system; and at least a pair of transmitter electrodes (204, 205) connected to an output of the driver.

Abstract: An apparatus (300) for supplying power to a load in a capacitive power transfer system comprises a power generator (350) operating at a first frequency; a transmitter comprising a plurality of first electrodes (310) connected to a first terminal of the power generator (350) and a plurality of second electrodes (320) connected to a second terminal of the power generator (350) of a transmitter portion of the apparatus (300); and a plurality of inductors (340), wherein each inductor of the plurality of inductors is connected between a pair of a first electrode and a second electrode of the plurality of first and second electrodes, wherein each inductor comprises, together with a parasitic capacitor (330) formed between each pair of the first electrode and the second electrode, a resonant circuit at the first frequency in order to compensate for current loss due to parasitic capacitances.

Abstract: A resonant matching circuit (310) for matching a resonant frequency of a wireless power transfer system to a frequency of a power signal comprises a switch (311) connected in parallel with a resonant element (302) of the wireless power transfer system; and a controller (312) connected to the switch (311) and configured to detect a zero-voltage level crossing of a signal flowing through the resonant element (302) and to close the switch (311) for a predefined amount of time upon detection of the zero-voltage level crossing, wherein closing the switch (311) for the predefined amount of time adds any one of an inductive value and a capacitive value to the resonant frequency of a wireless power transfer system.

Abstract: A transparent capacitive powering system (200) is disclosed.

Abstract: The present invention relates to a method and apparatus for disconnecting a bias current circuitry (140) in a way that there is no bias current flowing anymore for the transmit output of a network controller (110), e.g. Ethernet controller. Also, the data connection, e.g., TX+ and TX? lines in or at an Ethernet connector (120), are connected to a control circuitry (130) to simulate an active connection by taking over supply of link activation pulses, e.g., link integrity test (LIT) pulses. These two measures will allow the user to save the bias current on the transmit output and maintain the link activation signals to keep the link up towards a network controller (110).

Abstract: The invention relates a system for controlling distribution of power to load elements via network connections (e.g. LAN). Low cost luminaires or other load elements can be powered via LAN connections (e.g. by power over Ethernet (PoE)) without featuring an Internet Protocol (IP) node. This is attractive because with such a system the installation cost down benefits of PoE can be applied also to installations that do not require advanced controls. This means that to switch them on or off, the power supply on the LAN port of the switch must be enabled or disabled. When load elements and load controllers (e.g. lighting controllers or light switches) are connected to the same switch, they are automatically paired to each other. This can be achieved through use of a network management protocol capability that some network switches have. This allows for easy installation and automatic intuitive commissioning.

Abstract: The invention relates to a power splitter for a variable number of loads, a power splitting method for a variable number of loads and a software product for power splitting. It is possible to provide power splitting for a variable number of loads, which allows for an efficient distribution of power while reducing unnecessary overhead, with the determination of an overall power demand for the variable number of loads being concentrated in the power splitter, which may then request the desired amount of power from the power supply.