摘要:
An electronic device (10,40) which is inductively powered or charged has a receiver coil (12) on which a metal object (24,42) can be placed without causing deterioration of the coil's magnetic field and without generating heat in the metal object. An ultra-thin, flexible, high magnetic permeability metal foil (14) having a thickness of 50 μm or less is provided as a shielding layer between the coil and the object. Radial slits (22) are provided in the shielding layer, which suppress unwanted eddy currents in the layer to reduce power transfer losses and heat generation.
摘要:
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.
摘要:
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.
摘要:
The invention relates to a planar receiver coil for use in a receiving device for receiving power from a transmitting device inductively, the receiver coil is intended to be coupled with a transmitter coil of said transmitting device, said receiver coil constituted by winding turns, wherein the winding turns at the outer part of the receiver coil are denser than the winding turns at the inner part of the receiver coil.
摘要:
The invention relates to a method and a device for grouping at least three lamps (1) and for assigning the lamps (1) to at least one operating unit. It is time-intensive to equip one or a plurality of rooms or halls within a building with lamps (1), particularly a grouping of lamps (1), and assigning lamps (1) to at least one operating unit. Therefore, grouping of lamps (1) and assigning the lamps (1) to at least one operating unit should be simplified. In accordance with the invention, a lamp (1) emits light and the other lamps (1) measure light, and distances between the lamps (1) are determined in dependence upon at least one light value and the lamps (1) are assigned to at least one operating unit in dependence upon the distances.
摘要:
Power converter for receiving an input current at an input voltage and for providing an output current at an output voltage. The power converter comprises a transformer (133) having a primary (136) and at least one secondary (138) side, wherein the transformer shows a mutual inductivity Ls. The power converter further comprises at least one switching device (124a, 124b) being operated at an operating frequency fop at the primary side of said transformer, and a capacitor CS at the primary side of the transformer. The capacitor forms a resonant circuit with the leakage inductivity LS of said transformer, wherein said operating frequency, said capacitor Cs, said mutual inductivity Lm and said leakage inductivity LS are matched such that the effective value of the output current is substantially constant with respect to variations of a load being traversed by said output current by using resonance principles and operating the power converter in a current source mode.
摘要:
The invention relates to a driver circuit arrangement (1′) for driving a plurality of individually switchable electrical subsystems (A′, B′, C′), such as (arrangements of) LEDs (9-A, 9-B, 9-C). Each subsystem has at least one energy storage device (10-A, 10-B, 10-C), such that when the subsystem is disconnected from the main source (7) of electrical energy, the energy storage device can supply energy to the device(s) of the subsystem. By furthermore providing at least one subswitch (13-A, 13-B, 13-C) in the subsystem, between the energy storage device and an electrical device of the subsystem, control over the device is still possible when the subsystem is disconnected form the main source of electrical energy.
摘要:
The invention relates to light-emitting diodes (O-LED). In particular, it relates to the driver electronics needed for these devices. An organic electroluminescent device is provided, which has a hermetically closed very flat housing. To improve the functionality of an O-LED, considerably reduce the height of an O-LED module and allow a cost-effective mass production, the driver circuit and the electronic driver elements or the printed circuit board (PCH) with the electronic driver elements are incorporated into the cover plate of the device.
摘要:
Power converter for receiving an input current at an input voltage and for providing an output current at an output voltage. The power converter comprises a transformer (133) having a primary (136) and at least one secondary (138) side, wherein the transformer shows a mutual inductivity Ls. The power converter further comprises at least one switching device (124a, 124b) being operated at an operating frequency ƒop at the primary side of said transformer, and a capacitor Cs at the primary side of the transformer. The capacitor forms a resonant circuit with the leakage inductivity Ls of said transformer, wherein said operating frequency, said capacitor Cs, said mutual inductivity Lm and said leakage inductivity Ls are matched such that the effective value of the output current is substantially constant with respect to variations of a load being traversed by said output current by using resonance principles and operating the power converter in a current source mode.
摘要翻译:功率转换器,用于接收输入电压的输入电流并提供输出电压的输出电流。 功率转换器包括具有初级(136)和至少一个次级(138)侧的变压器(133),其中变压器显示互感L 1。 功率转换器还包括至少一个开关装置(124a,124b),在所述变压器的初级侧以工作频率f op操作,以及电容器C 1, SUB>在变压器的初级侧。 所述电容器形成具有所述变压器的漏电感L S S S的谐振电路,其中所述电容器C S的所述工作频率,所述互感器L m / SUB>和所述漏电感L S s相匹配,使得输出电流的有效值相对于由所述输出电流通过使用谐振原理并且操作功率的负载的变化而基本恒定 转换器在电流源模式。
摘要:
The present invention relates to a soft magnetic material printed circuit boards. During the manufacturing of the printed magnetic circuit boards, the soft magnetic layer is used, such that it forms an integral part of the PCB after the manufacturing. In particular, the soft magnetic layers are formed such that, together with suitable circuit structures, an inductive component is formed. According to an aspect of the present invention, a polymer matrix of the soft magnetic layer is compatible to materials and/or processes used during the PCB manufacturing process.