Abstract: Primary (4, 8) and secondary (10) windings are subjected to a significant heat stress during operation of a high voltage transformer. The present invention describes a high voltage transformer which is believed to have good temperature properties. This transformer may have a planar primary winding and a Litz secondary winding. The planar primary winding may abut against a planar face of the core (2) therefore allowing for a good heat exchange between these two elements. The Litz secondary winding and the planar primary winding may be cooled by means of a cooling medium.

Abstract: 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.

Abstract: The invention relates to a transformer (12) with a planar primary winding and a planar secondary winding. In order to support the heat dissipation during operation, each winding is integrated on a substrate in at least one dedicated PCB (30, 40). The PCBs (30, 40) are separated from each other by a non-ferromagnetic and electrically insulating material (50). The material: (50) transfers heat better than the substrates. The invention relates equally to an apparatus comprising such a transformer (12).

Abstract: SMT-components known in the art usually have a thickness of approximately 1 mm and no flexibility. According to the present invention windings for an inductor are realized within a substrate, preferably by using copper layers which are already in the substrate. Then, thin metal sheet layers of high permeable material are laminated on top and bottom of the substrate. These layers are structured and then form the magnetic core of the inductor. Advantageously, an inductor may be provided with a very small building height.

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: The invention relates to a method and a system for translating a three value color space signal, preferably given in a CIE scale, to an n primary color space signal, n?4 being an integer This way there is provided color controlling of a white light source comprising an array of colored light emitting diodes with respect to maximum CRI and maximum luminous efficiency.

Abstract: A light-generating body for emitting light of homogeneous intensity and color, having at least one organic light-emitting diode (22) that emits in a planar fashion in a first region of the spectrum, at least one non-organic light emitting diode (10,14) that emits in a conical shape in a second region of the spectrum, and an arrangement for mixing the light emitted by all the light-emitting diodes that includes a diffuser surface.

Abstract: The present invention relates to a multiple-output voltage converter. A basic idea of the present invention is to provide a multiple-output converter which may be adapted to various output power conditions. The converter has, in an exemplifying embodiment, three outputs which all share a common tapped inductor (301, 302). An inductor tap is employed to control the inductance of the inductor. A large inductance is used for low power standby operation and a small inductance is used when, for example, the LED backlight is switched on. Switches are arranged at the converter outputs to select to which one of the respective converter outputs the energy of the inductor is to be transferred.

Abstract: A wireless resonant powering device 1 according to the invention comprises a first inductor winding 3, which is arranged to form a transformer 9 with the inductor winding 13 of the energizable load 11. The first inductor winding 3 is arranged to form a resonant circuit 5, which may comprise a suitable plurality of electric capacitances and coils. The components of the resonant circuit 5 are selected such that the magnetic energy received by the inductor winding 13 damps the energy flow in the resonant circuit so that the induced voltage in the inductor winding 13 is substantially constant and is independent of the magnetic coupling between the first inductor winding 3 and the inductor winding 13 at the operating frequency of the driving means 6. The resonant circuit is driven by the driving means 6, comprising a control unit 6c arranged to induce an alternating voltage between a first semiconductor switch 6a and a second semiconductor switch 6b.

Abstract: Printed Circuit Board with Integrated Inductor. In today's electronic devices components such as inductors are required having a small building height. According to the present invention, a core of an inductor may be realized by ferrite plates glued onto a substrate. A winding of the inductor is provided in the substrate. Advantageously, this may allow to provide an inductor having a simple arrangement and a reduced building height.

Abstract: SMT-components known in the art usually have a thickness of approximately 1 mm and no flexibility. According to the present invention windings for an inductor are realized within a substrate, preferably by using copper layers which are already in the substrate. Then, thin metal sheet layers of high permeable material are laminated on top and bottom of the substrate. These layers are structured and then form the magnetic core of the inductor. Advantageously, an inductor may be provided with a very small building height.

Abstract: In a safety device for a tank system with a tank pipe 1 which has a pliable region and a rigid region, a reinforcing element 7 is allocated to the rigid region of the tank pipe 1. The reinforcing element 7 is hollow and is in contact with the entire circumference of the tank pipe 1 with its interior contour.

Abstract: A transformer having an additional integrated inductor includes a first core (1) having at least a primary winding (5), a second core (2) having at least a secondary winding (4), and a third core (3), in which each core (1, 2, 3) is a separate component.

Abstract: The present invention relates to a transformer with an additional integrated inductor. To this end it is envisaged that the transformer is provided with a first core (1) which has at least a primary winding (5), a second core (2) which has at least a secondary winding (4), and a third core (3), while each core (1, 2, 3) is a separate component.

Abstract: The invention relates to an actuator having a plurality of piezoelectric drives (1a, 1b, 1c) and a sphere (2) which is rotatable about at least two axes of rotation (7a, 7b, 7c), and to an arrangement for transmitting pictures and sound, including an actuator. The actuator should be flexible in use and is to be realized at minimal cost. For this purpose, at least two piezoelectric drives (1a, 1b, 1c) have been provided which can rotate the sphere (2) arbitrarily, the piezoelectric drives (1a, 1b, 1c) being capable of transmitting their power to the sphere (2) in order to rotate this sphere about a respective axis of rotation by friction with the aid of vibrations in a tangential direction relative to the surface of the sphere (2).

Abstract: An electromotive actuating device having a movable member and a stationary member is disclosed. The device includes a first excitation part adapted to generate a constant magnetic flux and a second excitation part adapted to generate a magnetic flux of variable amplitude, a first and a second magnetic circuit is provided for guiding the magnetic flux generated by the first excitation part. The reluctance of the first and of the second magnetic circuit is controlled by means of the position of the movable member, and the second excitation part being included in the second magnetic circuit. An actuating device of this type has a rotary actuator having a range of more than 90.degree.. This is achieved in that the stationary member includes at least a first pole shoe, a second pole shoe and a third pole shoe. The first pole shoe and the third pole shoe form flux guiding elements of the first magnetic circuit. The second pole shoe and the third pole shoe form flux guiding elements of the second magnetic circuit.

Abstract: An electrical actuator (11, 85) comprises a magnetically permeable stator body (13) and a permanently magnetic rotor body (17) which is pivotable relative to the stator body (13) through a limited angle of rotation (.phi.). The stator body (13) exerts a magnetostatic torque (T.sub.MS) on the rotor body (17) and comprises electrical energizing means (29) for exerting an electromagnetic torque (T.sub.EM) on the rotor body (17). T.sub.EM is substantially proportional to a value (I) of an electrical current through the energizing means (29) and depends on .phi. in accordance with a first function of .phi., while T.sub.MS depends on .phi. in accordance with a second function of .phi..According to the invention, said first function is substantially different from said second function, while it is true for each position of equilibrium of the rotor body (17), in which the resultant T.sub.R of T.sub.EM and T.sub.MS is zero for a predetermined value I, that T.sub.R has a positive value if .phi. decreases and T.sub.

Abstract: Three magnetically cooperating parts are movable relative to one another, one part being provided for connection to a drive shaft, one part being provided for connection to an output shaft, and one part being provided as a stationary part. A first part surrounds a second part, these parts having permanent magnets which alternately exhibit north poles and south poles along the circumference. The third part comprises a yoke surrounding the first part, which yoke serves as a magnetic return element, and which has magnetically conductive teeth at the inner side of the yoke.

Abstract: The invention relates to an electromotive adjustment device with a rotor (9) comprising a magnetized rotary body (8) and with a single-strand, electrically excitable U-shaped stator (11) whose legs (13, 14) form the pole shoes (26, 27) and whose yoke (15) interconnects the two legs (13, 14) and acts as a support for the exciter coil (16), the angular position of the rotor (9) being adjustable by means of the stator current, while the maximum range of the angle of rotation of the rotor is smaller than 180.degree.. Such adjustment devices can be used in particular for the adjustment of a throttle plate in the suction line of an internal combustion engine.

Abstract: A motor with reduced radial forces includes a first motor part made up of 2P permanent magnet poles surrounding a second motor part formed by a magnetic yoke having a number T of pole teeth and with an air gap between the first and second motor parts. The first and second motor parts are moveable relative to one another. Exciter coils are mounted on the pole teeth and the pole teeth are separated by pole gaps. For a motor with a number 2P magnet poles and a number T of pole teeth which do not have a common submultiple greater than 1, each of the pole teeth have a centrally located auxiliary slot facing the air gap thereby to reduce undesirable radial forces.