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Antiicing device, in particular for aircraft nacelle Set of inventions relates to aircraft equipment. antiicing device(1) for aircraft nacelle contains electrical tapes (5) each one of which is made of main conductor (7) oriented along tape (5) which includes straightline elements (13) and curved elements (17. The tapes (5) include spirals (15) formed by combination of several curved elements (17). Adjacent tapes (5) are built in pairs and are powered from different sources. Air intake edge of aircraft includes antiicing device (1). |
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Lamp with coaxial transmission line Lamp represented by a capacitive load is excited by the power supply source in the form of an inverter loaded to resonance circuit and step-up transformer, which is connected to the lamp electrodes through a coaxial transmission line. Generation of harmonic voltage takes place with interruption due to the inverter equipped with an interrupter. |
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Invention relates to a user interface device for controlling an electrical consumer, particularly a lighting system. The invention further relates to a lighting system using said user interface device. To provide a user interface device for controlling a lighting system which can be easily controlled and enable recognition of the selected presetting in all areas of a display device, the invention discloses a user interface device for controlling a consumer load which comprises: an input device; and a display device, the input device and the display device being arranged connected to each other in one common layer or in two layers respectively stacked on each other. The display device is adapted to display at least a first colour scale indicating a first range of values adjustable by a user input on the first colour scale and to display a first feedback indicator within the first colour scale indicating the current value of the first range of values output by the user interface device to a consumer load. |
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Heating and lighting modular system Invention is related to electric engineering, in particular, to heating and lighting modular system consisting of lighting and heating elements. The technical result is attained due to usage of at least one array (1) of modules comprising at least three functional modules (2) with different functions, which contains at least one lighting module comprising at least one light-emitting element and at least one additional functional module (2) selected from the following list: modules of audio system, video modules, and multifunctional modules. From the building side the modules are connected to module connecting device (5) by means of power supply device (4). At least one array (1) of modules are spread from the power supply device with a bundle (6) of supply lines, which includes parallel supply lines intended to supply all functional modules (2), included into the array (1) of modules. The bundle (6) of supply lines has output connecting elements (3) intended for connection of the functional modules (2). |
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Device to connect source of power supply to lamp Invention related to the field of electric engineering. device (1) for connection of a source (2) of power supply to a light diode lamp (3) comprises the first part for reception of the first signal of current and the first signal of voltage from the source (2) of power supply and the second part for supply of the second signal of voltage and the second signal of current to the lamp (3). The first part comprises a detecting part (11) for detection of first amplitude reduction in at least one of the first signals, for instance, in the first signal of voltage. And the second part comprises an input part (12) to input, in response to the detection result, reduction of the second amplitude, at least into one of the second signals, for instance, into the second signal of current. As a result, the first part detects the first condition of light force reduction caused by the source (2) of power supply, and the second part inputs the second condition of light force reduction in response to the fact that the first part detected the first condition of light force reduction. |
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Methods of selecting and controlling devices Invention relates to selecting and controlling devices based on wireless communication technology. The wireless controller sends a test message to one or more devices; each device receives the test message, obtains information relating the location thereof relative to the wireless controller, determines the response time according to a first predefined rule based on the relative location information thereof; detects response signals from other devices until the response time expires; decides whether or not to send its response signal according to a second predefined rule and procedure for detecting response signals from other devices; the wireless controller receives response signals sent by devices after comparing information on the location of each device relative to the wireless controller and selects the target device from said devices. |
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Method and device of power-saving control of street lighting Method and device are proposed for power-saving control of street lighting, which consist in autonomous adaptive street lamps during the day depending on duration of a light day calculated for every day of the calendar year for this geographic area, and also road traffic intensity. The technical objective of the proposed invention is aimed at increasing energy efficiency and safety of street lighting control. The method provides for functioning of the lighting system in a power-saving mode (mode of lamps dimming), which is subdivided into the basic and optimal power-saving mode. The basic power-saving mode is the mode, when street lamps are dimmed for the knowingly permissible interval of time. The optimal power-saving mode is the mode, when duration of the power-saving mode is maximum for the current date. In the case when values of time for switching on and off are not defined for both optimal and basic power-saving mode, the power-saving mode in the subsequent cycle of operation of street lamps is not switched on. The device comprises a source of light, a power supply unit, a unit of adaptive dimming, a sensor of road traffic intensity (option), and makes it possible to carry out autonomous adaptive dimming of street lamps during the day. |
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Method of induction heating used in device comprising magnetically connected inductors Invention relates to the method of induction heating of a metal part, such as a sheet or a bar, at the same time the heating device comprises magnetically connected inductors. Each inductor receives power supply from its appropriate inverter, connected to a capacitor for creation of an oscillating circuit, which have approximately identical resonant frequency, at the same time each inverter is controlled by a control unit, in order to vary amplitude and phase of current passing via the appropriate inductor, the device additionally comprises facilities to determine the specified current, and also facilities to determine the actual temperature profile of the specified part. The method includes the following stages: the actual temperature profile is compared with the reference temperature profile, the reference profile of power density is calculated, which the heating device must supply to the specified part; the sought-for currents are calculated, which must be produced by inverters, so that currents of inductors achieve the appropriate sought-for values to send the reference power density profile to the part; currents are determined, which pass via inductors, in order to compare them with the sought-for values and to determine current variances subject to correction, and to transfer commands of correction depending on current deviations. |
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Heat-generating electromechanical converter Invention relates to electric engineering, namely, to a heat-generating electromechanical converter designed for heating and/or movement of liquid or gaseous medium. The device comprises an additional fixed element made of antifriction non-electroconductive material, which performs the functions of a radial and/or thrust sliding bearing, from polymer composite material on the basis of epoxide-diane resin with filler from fluoroplastic powder, cut glass fibre and additionally aluminium oxide Al2O3 or silicon dioxide SiO2, which makes it possible to increase quantity of heat removed from the primary winding. |
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Method and apparatus for producing thermally expanded graphite Apparatus for producing thermally expanded graphite includes a feeding device 1, a circular waveguide 6, a storage hopper 19, a device for feeding blow-down carbon dioxide gas or air, magnetron generators, a belt conveyor with lower 2 and upper 3 belts formers 4 and 5. The circular waveguide 6 is provided with gas valves 15, longitudinal slits 14, communication windows 11 with insulating quartz inserts 12, insulating quartz rings 7 and 16 and is divided into sections having horn radiators 9 and 10. A layer of oxidised graphite undergoes microwave treatment for 0.1-0.5 s with power which provides temperature of 1500-1800°C, which is then lowered to provide temperature of 500-1000°C for 3-10 s. |
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Led lighting device with characteristic of colour temperature of incandescent lamp Lighting device includes sets of LEDs using natural characteristics of LEDs to bear a resemblance to an incandescent lamp performance at reduction of brightness. Technical result is simpler control. The first set of at least one LED provides light of the first colour temperature, and the second set of at least one LED provides light of the second colour temperature. The first and the second sets are connected in series, or the first and the second sets are connected in parallel, with a resistive element as far as possible with the first or the second sets. The first and the second sets differ by temperature characteristic or have different resonance electric resistance. |
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Melting plasmatron includes a water-cooled housing, plasma-forming gas supply channels located parallel to plasmatron axis and connected to a vertically located water-cooled nozzle, an electrical insulation, an electrical network, a tungsten electrode-cathode and an electrode holder. In addition, plasmatron is equipped with the second plasma-forming gas supply channel with a nozzle; with that, nozzles are installed symmetrically relative to vertical axis of plasmatron and at an angle of 30-35° to vertical axis of the electrode holder. |
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Optical transmission of data for configuring light-sensitive peripheral devices Invention relates to optical transmission of data and more specifically to methods of configuring at least one remote light-sensitive device, to a central light-emitting module and to a light-sensitive device. Spatial configuration of remote light-sensitive devices (e.g. peripheral devices such as loudspeakers or illumination devices) is achieved by transmitting identifiers or configuration information embedded in light emitted in multiple directions from the central light-emitting module. The directions can be distinguished from each other through different identifiers or different configuration information for each direction of transmission. The invention enables a user to place remote light-sensitive devices at the required spatial position, and the central light-emitting module will be able to determine the location and spatial function, i.e., if a peripheral device is an audio device and/or an illumination device, for instance. |
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LED driving apparatus (1) includes a structure (10) for transmitting a signal to LEDs (11, 12). The LEDs (11, 12) include different internal impedances (41, 42) for generating different light outputs under the action of a signal parameter having different values, as a result of which the LEDs (11, 12) can be driven relatively independent of each other. Different light outputs can have different intensities in order to reduce light intensity and/or different colours in order to vary colour. The parameter may include a frequency parameter and/or a time parameter. The LEDs (11, 12) may form parts of a series branch, e.g. when they are stacked organic LEDs, or may form parallel branches. The internal impedances (41, 42) may include capacitances (21, 22) and resistivities (31, 32). |
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Invention relates to a user interface device and a method of controlling an electric power consumer. Provided is a user interface device for controlling an electric power consumer, comprising: a manual control device including a display unit and an input unit for generating a switching signal (1a) based on user input; and an electronic control device for receiving the switching signal (1a) and generating an information signal (1b) based on the switching signal (1a) and/or a feedback signal (1e) received from the consumer load and for outputting a control signal (1d) to the electric power consumer, wherein the information signal (1b) includes information at least indicating a direct relationship between a presentation on the display unit and the control settings of the electric power consumer; wherein the display unit is adapted to display the presentation based on the information included in the received information signal (1b). |
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Luminaire and its adjustment method Invention refers to luminaire adjustment. Luminaire includes at least one removable unit, and each unit includes at least one source of light. Each unit includes controller compensating changes in light intensity caused by ageing of at least one light source by adjusting electric power supplied to at least one light source as a preset time function. |
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Invention relates to a user interface device for controlling an electrical consumer, particularly a lighting system. Further, the invention relates to a lighting system using such user interface device. The invention also relates to a method of controlling such a lighting system using a user interface device. Disclosed is a user interface device for controlling a connected lighting system, which comprises: a display unit including a plurality of LEDs in a matrix form, wherein each of the LEDs of the matrix is addressable individually; an input unit to receive a user input; a control unit adapted to receive a signal based on the user input and to generate an information signal provided to the display unit and to generate a control signal for controlling a connected consumer load. |
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Device for levitation of certain amount of material Invention refers to electrical engineering. Device includes coils maintaining material levitation using alternate electric current in coils. Two coils, first and second one, generate variable electromagnetic field. Tube out of non-conductive material is positioned between the coils and some amount of material used and levitated between the first and the second coils as they move along central coil axis inside the tube. First coil is positioned above second coil and has more windings. Coils are connected via one current source, or each coil has a separate current source. The tube is positioned vertically, with top hole open and bottom hole closed, and is filled with magnetic fluid. First coil with smaller number of windings is positioned at input hole. Levitating material suspended between electromagnetic fields of the first and second coils moves from open input hole to closed output hole of the tube under effect of magnetic fluid pressure force. |
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Device for zonal heating of cryogenic control apparatus Device for zonal heating of a cryogenic control apparatus, for example, of a shutting off element which comprises a hollow casing 1 fixed in the housing of a cryogenic cavity, a stem 2 mounted inside the casing, movable along it and connected by one end to the output of the stem travelling drive 3 and by the other end - to a shutting off element 4 which provides for the change of the flow passage section in the pipeline where liquefied gas is transported. At least one resistance heating element 11 and temperature sensor 12 are mounted on the outer side of the control apparatus casing 1. The heating element 11 and the temperature sensor 12 can be mounted on the drive 3 case as well. Additionally the device comprises a voltage regulator 13, a temperature selector 14 and a control device 15 connected by its first input to the output of the temperature selector, by its second input - to the output of the temperature sensor and by its output to the control input of the voltage regulator with the power input of the latter being connected to the input of a power supply source 16. For easier installation on the apparatus casing 1 the heating element 11 can be made annular and detachable in axial direction. |
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Method of controlling lighting system Present invention relates to a method of controlling a lighting system. The lighting system is designed as a wireless network comprising a controller and a plurality of working nodes configured to communicate with each other, wherein the method comprises steps of synchronising the working nodes with the controller, determining, from the plurality of working nodes, a set of working nodes situated in a given working region, estimating state switching delay based on maximum communication delay between the controller and the set of working nodes situated in the given working region, transmitting the estimated state switching delay to the plurality of working nodes and transmitting state switching instructions to the plurality of working nodes. |
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Invention relates to heat treatment, for example, high-frequency tempering of metal parts. Proposed device comprises induction heating coils (26) to heat inductively different parts o processed target section (A) in axial direction of blank (12). Note here that blank (12) and coil (26) displace relative to each other in circular direction (R) of processed section (A). Heating coil (26) features zigzag shape with cranked section (34) that opens axially in one direction and cranked section (35) that opens axially in opposite direction and continuously alternate in circular direction (R). |
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Microwave chemical synthesis apparatus Invention is intended for chemical synthesis of nanomaterials for industry and science and enables to study chemical synthesis kinetics while providing monitored and controlled effect of microwave radiation on a reaction medium. The microwave chemical synthesis apparatus includes a computer, a magnetron, a gradually variable supply voltage unit, a reactor chamber housing a reactor vessel on which an optical heat sensor is directed through an opening in the wall of the reactor chamber, said sensor being electrically connected to an analogue-to-digital converter, the output of which is connected to the first input of the computer, and a rectangular waveguide connected by one end to the magnetron and by the other end to the reactor chamber, and the output of the gradually variable supply voltage unit is connected to the magnetron. The apparatus further includes a reflection coefficient measuring unit, having four probes and a four-channel converter for converting analogue microwave signals to a digital signal, each channel of which is electrically connected to one of the probes of the reflection coefficient measuring unit, and the output of said four-channel converter is connected to the second input of the computer, a dynamic matching unit, having a probe and a step linear drive, electrically connected to the first output of the computer and mechanically connected to the probe of the dynamic matching unit, wherein the input of the gradually variable supply voltage unit is electrically connected to the second output of the computer. |
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Temperature stabilisation device Temperature stabilisation device of a temperature-controlled object contains a heater placed at the substrate with a temperature sensor and control system. The heater is equipped with a stand-by heating element with a temperature sensor. The control system is intended for regulation of temperature of a temperature-controlled object by means of switching on/off of heating element. The substrate can be represented by a body of a temperature-controlled object made of high heat-conductive material or by a high heat-conductive metal shell. The shell limits a temperature-controlled object. The main and stand-by heating elements have identical heat and geometric characteristics and they are placed at a dielectric base with s shift equal to a pitch of painted design. Auxiliary heaters with temperature sensors can be installed at the substrate. |
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Method and apparatus for controlling illumination system in controlled temperature environment Invention relates to a method of controlling an illumination system in a controlled temperature environment and to a control system for a controlled temperature environment having an illumination system. The output signal of the illumination system causes a temperature response in the controlled temperature environment, the temperature response being detected by a sensor, the method comprising steps of regulating the temperature adaptively based on the output signal of the illumination system and the associated temperature response. The control system for the controlled temperature environment has a sensor lying next to the casing of the controlled temperature environment and is configured to control illumination, wherein output signal of the illumination system causes a temperature response in the controlled temperature environment, the temperature response being detected by the sensor, and the control system is configured to regulate the temperature adaptively based on the output signal of the illumination system and the associated temperature response. |
![Bis[2-(n-tozylamino)benzyliden-4'-dimethylaminophenyliminato]zinc(ii) and based on it electroluminiscent device](http://img.russianpatents.com/img_data/1026/10269844-s.gif)
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Invention relates to novel compounds in a series of chelate complexes of zinc with azomethine derivatives, namely to bis[2-(N-tozylamino)benzyliden-4'-dimethylaminophenyliminato]zinc(II) of formula I Also claimed is electroluminescent device. |
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Invention is related to illumination systems based on light-emitting diodes (LED). LED lamp driver receives direct-current power of low voltage, at that the LED driver includes the following components: push-pull transformer circuit connected to receive direct-current power of low voltage and to generate alternating-current energy by the transformer, at that the push-pull transformer circuit contains switches reacting to control signals; self-resonant control circuit connected to the push-pull transformer circuit in order to generate control signals; current controller coupled to receive alternating-current energy of the transformer and to generate alternating-current controlled energy; AC/DC converter coupled to receive alternating-current controlled energy and to generate direct-current energy of high voltage. |
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Invention pertains to the field of electrical engineering and can be used in (1) a power supply source. The power-supply source circuit contains: input contacts (17, 19) intended for connection of the power-supply source circuit (1) to the direct-current energy source circuit (7), two output contacts intended for connection of the load circuit (11) the power-supply source circuit (1), a bridge circuit (3) containing at least two in-series switches (M1, M2) interconnected between two output contacts, a resonant circuit (5) connected at its one end to one or more input contacts and at its other end to the interconnecting track (15) of at least two switches (M1, M2) of the bridge circuit (3) and at least two diodes (D1, D2), at that the first diode (D1) is coupled between the first input contact intended to connect a positive contact of the direct-current energy source (7) and the first end contact of the in-series switches. The first end contact is connected to the first output contact, the second diode (D2) is coupled between the input contact intended for connection to a negative contact of the energy source circuit (7) and the second end contact of the in-series switches, at that the second end contact is connected to the second output contact. |
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Oled lighting device with tag element Invention relates to an organic light emitting diode (OLED) device (200) having a tag element (201) that encodes operating information about the device, for example its maximum driving current, such that this information can be read out wirelessly and/or electrically by wire but almost without Ohmic losses. The invention further comprises a socket (600) with a read-out unit (601) for reading out the operating information from such a tag element (201). The tag element may, for instance, have a tag electrode (201) that can be capacitively connected to a counter-electrode (601) in the socket. |
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Induction heater with cross-flow Induction heater with cross-flow ensures potential crossing of the conductive sheet side by an alternating magnetic field, at that the sheet is moved in one direction and thus induction heating of the conductive sheet takes place. The induction heater with cross-flow includes a heating coil placed so that the coil side faces the side of the conductive sheet; a core with the heating coil wounded around it; a screening plate formed of the conductor and placed between the core and butt end in the direction perpendicular to the direction of the conductive sheet movement; and non-conducting soft magnetic material which is fixed at the screening plate, at that the screening plate is placed between the core and non-conducting soft magnetic material. |
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Device for induction heating by cross flow Device for induction heating by cross flow allows for the magnetic field crossing the face of a conductive sheet which is transported in one direction thus heating the conductive sheet inductively. The device for induction heating by cross flow comprises a heating winding set so that the winding face is turned to the conductive sheet face, a core around which the heating winding is wound, and a shielding plate formed from a conductor and set between the core and the side end section in the direction perpendicular to the conductive sheet movement, the shielding plate is fitted with a projecting section whose side surface is of closed loop if seen from the direction perpendicular to the winding face. |
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Invention is related to the field of electric engineering and namely to electric arc gas heaters (plasma guns) used for receipt of stationary flows of low-temperature gas plasma of different gases, and it may be used in chemical industry and metallurgy, machine engineering and power generation sectors and for environment protection as well. In the water-steam arc heater containing in-series connected and installed along the longitudinal axis an electrode-anode, a ring for working gas delivery and an electrode-cathode, inner surface of the inner electrode-anode and a narrowed part of the output electrode-cathode are covered closely by the adjoining metal tube with low thermal conductivity and thickness of the wall equal to δ=(4÷8)·10-3m, through which cooling of the inner electrode-anode is made partially, and the narrowed part of the output electrode-cathode. The ratios of the electrode dimensions are as follows: d1/d2=1.1÷1.3, l1/d1=1.5÷4, l2/d2=3÷7, D1/d1≥1.5, D2/d2≥1.6, where d1, d2 are diameters of the narrowed parts (m), D1, D2 are diameters of the expanded parts (m), l1, l2 are lengths of the narrowed parts (m) of the inner electrode-anode and output electrode-cathode respectively. |
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This invention relates to an electroconductive heat release material. The above specified electroconductive heat release material comprises a substrate and an electroconductive heat release layer, practically evenly applied on the above substrate. The above electroconductive heat release layer is formed from electroconductive heat release paint, which includes an electroconductive heat release material and a binder. The specified above electroconductive basic material is selected from the group including natural graphite, artificial graphite or electroconductive carbon soot; the specified above binder is selected from the group, which includes acrylic resin, epoxide resin, polyurethane, melamine, gelatin, carboxymethylcellulose and polyvinyl alcohol. In some versions of realisation the substrate is paper. The above specified electroconductive material may be used to make a laminate floor cover with electric heating, surface temperature of which may be increased to 15-70°C for 5 minutes as power is supplied from a source with voltage of 220 V, at the same time this temperature may be maintained permanent within the long period of time. |
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Invention relates to lighting engineering. The method of driving a light source (11, 12, 13), wherein a light source is alternately turned on and off according to an on/off pattern, wherein the working cycle of the on/off pattern varies in order to vary the average light intensity of the light source, and wherein the form of the on/off pattern varies in order to transmit data. Therefore, a control signal for the light source includes information on data and information on the working cycle. The working cycle varies within a range from almost zero to almost 100%, and data are changed and transmitted without affecting the working cycle. |
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Channel electrical inductor device Present invention relates to a channel electrical inductor device and a method of making a channel electrical inductor device. A non-detachable hollow nonmagnetic channel mould is used to form one or more flow channels of the device. A heated fluid medium circulates through the hollow inside of the mould once the mould is placed in the device for heat treatment of the refractory surrounding the outer walls of the mould. After heat treatment, a liquid for chemical dissolution of said mould is fed into the hollow inside of the mould. |
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Invention relates to a device for driving a light-emitting diode (LED), an apparatus having said device and a method of driving a LED. In the first object, the disclosed device comprises an output stage for feeding current to the LED, wherein the current has an average value and a peak value, wherein the peak value, divided by the average value, forms a ratio, and an input stage for receiving a signal from a power supply unit, wherein the input stage includes a tool, having a resonance circuit for reducing the ratio through a frequency component to the signal or adaptation of the frequency component of the signal, which improves efficiency of the LED. According to the second object, in the method on the output stage, current is fed to the LED, wherein the current has an average value and a peak value, wherein the peak value, divided by the average value, forms a ratio, and an input stage for receiving a signal from a power supply unit, wherein the input stage includes a tool, having a resonance circuit for reducing the ratio by adding a frequency component to the signal or adaptation of the amplitude of the frequency component of the signal, which improves efficiency of the LED. |
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Solid thermal heating block from refractory phosphate concrete Invention relates to the field of resistive heating in industrial resistance furnaces, namely, to solid metal ceramic thermal heating blocks. The solid thermal heating block is made of a non-electroconductive heat-conductive refractory phosphate concrete, in which the heating element is poured, made of a wire heater in the form of a zigzag and belt current leads, besides, the area and the perimeter of the wire section and the area and the perimeter of the current lead section are at the ratio of at least 1:4, axes of symmetry of the heating element match axes of symmetry of the thermal heating block, and areas of connection of the wire heater with current leads in the thermal block are made in the form of cone-shaped grooves. |
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Method for connection of electric heating film to power supply source Invention is related to the method for connection of an electric heating film to a power supply source. The method involves the following stages: forming a groove based on the electric heating film; placing one end of the connection wire to the groove; filling the grove with a current-conductive adhesive; heating the base of the electric heating film in order to melt the film and to merge the connection wire and the current-conductive adhesive; and cooling of the electric heating film base and hardening of the current-conductive adhesive. Base of the electric heating film is covered at two sides by layered electrodes and these layered electrodes are connected in series with the electric heating film. In the middle of the layered electrode there is a groove which is an annular groove. The connection wire is made of fine silver. The current-conductive adhesive is a silver paste. |
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Electric heater consists of a protective metal shell 1 separated from a heating spiral 2 by a layer 3 of a powdered electric insulating material, a current lead 4 separated from the protective metal shell by an insulating element 5 and a flange 6 connected mechanically and electrically to the protective metal shell 1; the layer 3 of the powdered electric insulating material has length-variable thickness of the heating spiral which is reduced linearly on the thickness ensuring electric strength of the layer of the powdered electric insulating material at an amplitude value of power supply voltage up to the zero value at the opposite end of the heating spiral. |
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Coaxial three-phase heating cable Invention is related to electrical heating cables and namely to designs of coaxial three-phase heating cables intended for heating of objects with different shape, size and purpose. The cable has three cores 1, 2 and 3, each core is covered with an external heat and electric insulating sheath 4, it has an inner 5 and outer 6 conductors interconnected in series and placed coaxially with an annular gap between them filled with the inner heat and electric insulating sheath 8, and a common protective jacket 9. Cable strands are identical and twisted. The jacket 9 has three layers, the lower layer 10 and the upper layer 11 are made of the heat and electric insulating material while the middle layer is made in the form of a metal wire braid 12, which can be earthed PE at the point of the cable connection to the electric mains and the point of in-series connection 7 of the inner 5 and outer 6 conductors. The outer conductors 6 of each core are interconnected at the final point and form an artificial earthing point. |
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Infrared radiation source (1) comprises a primary energy converter (2) with current-conducting contacts (3) and an active region (4) with optical thickness in the radiation output direction, which does not exceed double the value of the inverse of the mean absorption coefficient of the active region in the energy range of radiation quanta of the source (1). The active region (4) is made of at least one non-conducting liquid or gas, having absorption bands of radiation of the source. The primary energy converter (2) is made of piezoelectric material. The active region (4) and the primary energy converter (2) are placed in a sealed housing (5), at least part of which is transparent for radiation of the source (1). |
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Electrode for electric arc dc furnace of continuous action Invention relates to the field of metallurgy, in particular, to a system of cooling of a hearth electrode, made in the form of a bimetal cartridge, or an anode for DC arc furnaces of continuous action. The system comprises cooling facilities in the form of a header placed near the first edge of cooling facilities, having the end wall equipped with multiple channels, which connect the specified header with the first section of the gap arranged near the first steel section, the first tube for movement of the cooling liquid to the header, at the same time the area of the cross section of the header is at least 1.5 times more than the area of the cross section of the first tube, each of channels has a longitudinal axis, substantially perpendicular to the plane that is tangent to the appropriate output section, at the same time in the first section of the gap there are many jets of cooling liquid produced, substantially perpendicular to the main surface of the cavity arranged near the first steel section. |
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Tubular electric heater contains a heat-producing element 1, for example in a form of a current-conducting spiral placed inside a protective metal shell 2 with an external circumferential finning 3, at the ends of the metal shell 2 there are sealed current leads 4 connected to the outputs of the current-conducting spiral, porous ceramic beads 5 of a tear-drop shape with the heat-producing element 1 placed in their internal opening, along their perimeter the beads are covered by the protective metal shell 2, the porous ceramic beads have width variable by height thus covering the heat-producing element completely or covering it minimally in the upper part, the inner cavity of the tubular electric heater, including pores of the ceramic beads, is filled with liquid partially. When voltage is supplied to the current leads 4 connected to the outputs of the current-conducting spiral the temperature of the spiral is increased as far as heat conductivity of the porous ceramic beads 5 is low, heating of the spiral of the heat-producing element 1 takes place fast, nevertheless the temperature of the protective shell 2 and finning 3 is defined by the temperature of the external heat carrier. As far as the inner cavity of the heater and pores of the beads are filled with liquid at certain temperature this liquid boils, steal comes through the pores to the space between the porous beads 5, where it is condensed at the inner surface of the protective shell 2 giving it the accumulated evaporation heat. The condensed steam in the form of liquid comes to the surface of the porous beads 5 and due to capillary action it is saturated inside into the beads 5 coming down to the heated spiral, there it boils again thus accumulating evaporation heat and closing the cycle of heat transfer and circulation loop. |
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Methods and apparatus for encoding information on ac line voltage Invention relates to electrical engineering, particularly systems for controlling lamps by encoding an AC power signal. AC line voltage may be encoded with control information, such as dimming information derived from an output signal of a conventional dimmer, so as to provide an encoded AC power signal. One or more lighting units, including LED-based lighting units, may be both provided with operating power and controlled (e.g., dimmed) based on the encoded power signal. In one implementation, information may be encoded on the AC line voltage by inverting some half cycles of the AC line voltage to generate an encoded AC power signal, with the ratio of positive half-cycles to negative half-cycles representing the encoded information. In other aspects, the encoded information may relate to one or more parameters of the light generated by the LED-based lighting unit(s) (e.g., intensity, colour, colour temperature, etc.). |
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Lighting system and light processing method Invention relates to lighting engineering. Disclosed is a lighting system, having a plurality of light sources equipped with encoding devices so that light emitted by the light sources contains identification codes of the light sources. To generate a light effect, i.e. to correlate light sources with their light spots, the system further includes a camera designed to take images of light spots and a signal processor designed to extract identification codes of light sources from the obtained images. The encoding device are used to modulate emitted light with a frequency higher than a given high level, so that light contains "fast" codes, and a frequency lower than a given low level so that light contains "slow" codes. |
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Lighting device with organic light-emitting diodes Invention is referred to a lighting device adapted for installation into a respective socket. The lighting device has a base or a body which embodies an organic light-emitting diode (LED) at least partially and an electronic circuit diagram which influences on electric power passage from the external terminal to the organic LED. The electronic circuit diagram can include a memory module, a communication module, a sensor, etc. for intelligent controlling of the LED and making the lighting device adapted to potential changes in excitation standards. |
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Invention relates to the field of lighting equipment. Technical result is improvement of lighting efficiency for portable lighting devices. The claimed lighting device has a scrolling function that provides lighting of the observed area at which the user is concentrated at present and the lighted area is scrolled forward and backward during reading. The lighting device contains two varieties of light-emitting units, an illuminating substrate, a controller and a selector. The selector controls one variety of the light-emitting units which illuminate a part of the illuminating substrate capable to deflect light to a part of the observed surface. |
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Invention is referred to electric engineering and can be used for supplemental reactivity of an arc furnace transformer. Reactive ballast arrangement (V) for the arc furnace consists of a choke coil (1) with an open switch (2) for load increment changing which is suitable for installation of the choke coil (1) reactance under load. Reactive ballast arrangement (V) is connected before the transformer of the arc furnace (O) used, in particular, for steel making. |
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Invention is referred to illumination engineering, in particular, to light sources that contain a number of elements. A light source is suggested which contains a variety of luminous elements and a control system intended to control these luminous elements. The control system contains a variety of luminous element controllers, and each controller is connected to the respective luminous element so that it can receive data of this luminous element, and a bus interface which is connected to luminous element controllers by the light source bus. The bus interface provides a general command to the luminous element controllers while the luminous element controllers generate signals of illumination element excitation on the basis of this general command and data of the luminous elements. |
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Method of arc furnace operation, control device for arc furnace and arc furnace Invention relates to arc furnace operation and control. At least one electrode is used to initiate the arc for metal fusion. Note here that electric arc associated with at least one electrode features first radiation power based on the first selected set of working parameters. Arc furnace is operated in compliance with preset program base of expected process run. Note here that availability of undesirable deviation of actual process run from expected process run is controlled. If said deviation exists second radiation power is set. Proceeding from changed second radiation power defined is changed second set of working parameters, at least, one magnitude of impedance. |
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Connecting element made of composite material of graphite and carbon fibre-reinforced carbon Connecting element for connecting graphite electrodes has at least one graphite area and at least one carbon fibre-reinforced carbon area, wherein the graphite contains at least 10 wt % fibre and the carbon fibre-reinforced carbon contains more than 20 wt % carbon fibre. The connecting element preferably contains a graphite body in form of a cylinder or double cone, wherein the graphite body has multiple recesses having a groove shape, which are filled with carbon fibre-reinforced carbon material with weight ratio of carbon fibre of more than 20 wt %. |
Another patent 2513549.