47th week of 2011 patent applcation highlights part 19 |
Patent application number | Title | Published |
20110285233 | INDUCTION MACHINE BEARING SYSTEM - A bearing assembly for an induction machine, such as an alternating current motor, includes a magnetic bearing for supporting a rotating shaft. An auxiliary bearing, also supporting the shaft in the event of magnetic bearing failure, is aligned with the motor end shield and frame so that shaft loads supported thereby are transferred to the frame in a manner that reduces likelihood of magnetic bearing contact with the shaft or its deformation. The bearing assembly may incorporate shock absorbing and vibration damping/isolation elements, such as o-rings, between the auxiliary bearing and its support structure interface to the frame. The auxiliary bearing may be incorporated in a removable cartridge for ease of machine maintenance. The bearing assembly may include heat dissipating fins. | 2011-11-24 |
20110285234 | GENERATOR WITH IMPROVED GENERATION EFFICIENCY AND ROTATIONAL FORCE - Disclosed is a generator that can produce electric power using water power, wave power or wind power. The generator characterized in that a plurality of magnet plates and separately-arranged coil plates are constructed in such a way that they can rotate in mutually opposing directions, and these magnet plates and coil plates are continuously and sequentially arranged on a rotating shaft, and a plurality of induction coils and electromotive coils installed on inner and outer cylinders proximate to the opposed ends of magnets arranged on the magnet plates are separately arranged on the coil plates. According to the generator, it is possible to obtain a further increased quantity of generation by means of the magnet plates and coil plates that rotate in mutually opposing directions even in the case that water power or wind power used in generation is weak. In addition, even if the energy supply source such as wind power, wave power or water power acts continuously or intermittently, the rotational force between the magnet plates and coil plates is increased greatly by the electromotive coils that confer repulsive force on the magnets to make it possible to produce much higher generation energy, so it is very economical. | 2011-11-24 |
20110285235 | Electro Magnetic Pulse Motor/Generator - An apparatus and method of providing output power from electrical pulse current in a highly efficient configuration. The input pulse current passes through a series of configured and wound input coils specifically positioned in an alternating manner in respect to wound and “tapped” output coils. Current is induced in the output coils in a highly efficient manner and can be output from the apparatus at each layer of winding, reducing resistance to induction. In an embodiment, the apparatus comprises a “power wheel”, a plurality of magnetic nodes spaced evenly over the outer circumference of said power wheel, each of said magnetic nodes having the same magnetic polarity facing radially outward from the center of said power wheel; an electro-magnetic generator, which electromagnetically causes said power wheel to rotate, with alternating layered windings of input coils and output coils such that said output coils are “tapped” at each layer of winding; and a means for switching, in which rotation of said power wheel causes pulse current to be applied to said input coils. | 2011-11-24 |
20110285236 | Rotating machines using trapped field magnets and related methods - Rotors with trapped-field magnet (TFM) bulks, machines with TFM rotors, and methods of activating and/or using machines with TFM rotors. | 2011-11-24 |
20110285237 | AXIAL GAP MOTOR AND METHOD OF MANUFACTURING ROTOR FOR SAME - There are provided an axial gap motor which can reduce the number of manufacturing steps due to permanent magnets not having to be fixed by an adhesive and which can prevent permanent magnets from being displaced or loosened so that the permanent magnets can be positioned within a rotor frame in an ensured fashion and a manufacturing method for manufacturing a rotor for the motor. A rotor | 2011-11-24 |
20110285238 | DOUBLE-STATOR MOTOR - In a double-stator motor has a rotary shaft, an annular rotor is coupled with a rotary shaft. First and second three-phase stators are arranged inside and outside to the rotor in the radial direction and formed to generate first and second rotating magnetic fields in response to three-phase currents, respectively. The rotor has an even number of segment poles made of soft magnetic material and arranged mutually separately at positions of the rotor. The positions are equally distanced apart from the rotary shaft in the radial direction and in the circumferential direction. Each of the first and second three-phase stators has magnetic poles which are the same in the number of poles as the segment poles and the magnetic poles are positioned such that magnetomotive forces from the magnetic poles are faced to each other between the magnetic poles of the first and second three-phase stators. | 2011-11-24 |
20110285239 | Permanent Magnet Machine with Offset Pole Spacing - An internal permanent magnet machine has multiple rotor sections, each section having multiple rotor laminations. Permanent magnets are placed asymmetrically in lamination openings to attenuate oscillations in torque caused by harmonic components of magnetic flux. | 2011-11-24 |
20110285240 | STATOR, MOTOR, AND COMPRESSOR - A stator includes a core and an insulator. The core has a plurality of annularly arranged tooth portions. The insulator is disposed on an end portion of the core, and has an annular wall portion extending in a direction departing from the core. A protrusion protrudes radially outward across an entire circumference of the wall portion, and the protrusion is provided on an outer circumferential surface of the wall portion. | 2011-11-24 |
20110285241 | ROTOR LAMINATION ASSEMBLY - An electric machine includes a rotor lamination assembly having a lamination member formed from a material having a first yield strength. The lamination member includes a first bridge portion having a first width, and a first bridge zone having a first thickness. The rotor lamination assembly also includes at least one lamination section having a second bridge zone having a second thickness. The second thickness is greater than the first thickness. The rotor lamination assembly further includes at least one lamination element formed from a second material having a second yield strength that is higher than the first yield strength, and at least one lamination component. The at least one lamination component includes a second bridge portion having a second width. The second width is greater than the first width. | 2011-11-24 |
20110285242 | STRESS REDUCTION IN ELECTRICAL MACHINES - A rotating electrical machine has a rotor composed of laminations having salient poles. The poles have one or more holes which are positioned so as to reduce the peak stress experienced by the lamination when the rotor is rotating. The holes are chosen according to a disclosed design procedure which gives a reduction in peak stress for a given limit on the output of the machine. | 2011-11-24 |
20110285243 | ROTARY ELECTRIC MACHINE WITH IMPROVED MAGNETIC RESISTANCE - In a motor, an armature includes an annular yoke having an inner surface, and a plurality of teeth radially projecting individually from the inner surface of the annular yoke, and a rotor is rotatably provided inside the armature with a gap between the outer surface thereof and the inner surface of the armature. The armature and rotor is configured to have a first magnetic resistance facilitating reactive magnetic flux to flow through at least one tooth in a plurality of teeth to an adjacent tooth of the at least one tooth therein as compared with the reactive magnetic flux toward the rotor. The armature and rotor is configured to have a second magnetic resistance facilitating main magnetic flux based on the at least one pair of magnetic poles to flow toward a yoke of the armature as compared with the main magnetic flux toward at least one tooth close to the main magnetic flux. | 2011-11-24 |
20110285244 | ULTRASOUND WAVE GENERATING APPARATUS - In one embodiment, there is provided in an ultrasound wave generating apparatus a low output impedance transistor based driver circuit that has the ability to apply a drive signal at a frequency corresponding to an ultrasound transducer's resonant frequency. The low output impedance of the driver circuit allows for a substantial portion of the energy to be delivered to the ultrasound transducer and converted to ultrasound energy. The power transfer efficiency of the presented circuit allows ultrasound drivers to be powered by portable battery packs, while still delivering high ultrasound acoustic power. The ultrasound driver can provide energy in sufficient amounts making it suitable for a range of ultrasound driving applications including but not limited to therapeutic low and high power clinical systems, high intensity focused ultrasound HIFU, acoustical welding, industrial inspection, and other various forms of low-to-high power acoustic devices. Other embodiments of ultrasound transducer drivers and of other components of portable ultrasound generator apparatus in various embodiments are set forth herein. | 2011-11-24 |
20110285245 | ANODIC WAFER BONDING METHOD, METHOD OF MANUFACTURING PACKAGES, METHOD OF MANUFACTURING PIEZOELECTRIC VIBRATORS, OSCILLATOR, ELECTRONIC APPARATUS, AND RADIO CLOCK - An anodic wafer bonding method according to the present invention is an anodic wafer bonding method for bonding a first substrate formed of an insulating material or a dielectric material and a second substrate which can be anodically bonded by applying a voltage to a bonding film formed of a conductive material formed between the substrates in a state in which the first substrate and the second substrate are laminated, in which the voltage is applied to the bonding film from a plurality of points at the time of anodic wafer bonding. | 2011-11-24 |
20110285246 | MECHANICAL TEMPERATURE COMPENSATION METHODS AND DEVICES - The disclosure pertains to a device and a method for compensating for heat expansion effects in solid materials, as well as a method for manufacturing the device. | 2011-11-24 |
20110285247 | ELECTROACTIVE POLYMER TRANSDUCERS FOR SENSORY FEEDBACK APPLICATIONS - Electroactive polymer transducers for sensory feedback applications are disclosed. | 2011-11-24 |
20110285248 | METHODS, SYSTEMS, AND DEVICES FOR MECHANICAL MOTION AMPLIFICATION - A mechanical amplifier and method for converting a small motion amplitude to a larger motion amplitude are disclosed. The method includes using two or more beams which are connected in series at angles to each other. Undesirable movements arising in the structure are absorbed by the structure through torsion. Each beam is a mechanical motion amplifier, and by connecting these in series, the total amplification is the product of the amplification of the comprised beams. The disclosure also pertains to a device comprising two or more beams connected together at an angle of 90 degrees in one embodiment. | 2011-11-24 |
20110285249 | PIEZOLELECTRIC SOUND-GENERATING DEVICE - Provided is a piezoelectric sound generating device capable of obtaining a stable connection state of lead-out conductors constituted of a conductive resin layer. A piezoelectric sound generating device | 2011-11-24 |
20110285250 | PIEZOELECTRIC VIBRATOR, PIEZOELECTRIC VIBRATOR MOUNTING BODY, AND PIEZOELECTRIC VIBRATOR MANUFACTURING METHOD - This piezoelectric vibrator is provided with a package that is structured to include a first substrate and a second substrate that are bonded to each other such that a cavity is formed therebetween, an internal electrode portion that is formed on the first substrate and housed in the cavity, a piezoelectric vibrating reed that is sealed in the cavity and also is electrically connected to the internal electrode portion in the cavity, an external electrode portion that is formed on an external surface of the first substrate, a through electrode portion that is disposed so as not to be overlapped by the external electrode portion in a thickness direction of the first substrate, while one end of the through electrode portion is electrically connected to the internal electrode portion and another end of the through electrode portion is formed on the external surface of the first substrate while penetrating through the first substrate, and a routing wiring portion that electrically connects the through electrode portion and the external electrode portion. | 2011-11-24 |
20110285251 | BEARING ROTATIONAL LOCK - A bearing assembly for an electric motor is provided that includes a bearing having an inner race and an outer race, and a bearing float sleeve having an outer race engaging member. The outer race engaging member includes an outer surface configured for engagement with a bearing seat formed in a motor end member and an inner surface configured for engagement with the bearing outer race such that the bearing outer race is in a fixed rotational position with respect to the bearing float sleeve. The bearing float sleeve includes at least one feature operational to maintain a fixed rotational position of the bearing float sleeve with respect to the motor end member. | 2011-11-24 |
20110285252 | Motor with rotor-mounted control circuitry - A rotating electromechanical machine has a rotor having at least one current-carrying winding and at least one rotor-mounted sensor configured to sense a machine property or parameter during machine operation. Rotor-mounted circuitry dynamically modifies at least one property of the current-carrying winding during machine operation in response to the sensed machine property or parameter. | 2011-11-24 |
20110285253 | Motor with rotor-mounted control circuitry - A rotating electromechanical machine has a rotor having at least one current-carrying winding and at least one rotor-mounted sensor configured to sense a machine property or parameter during machine operation. Rotor-mounted circuitry dynamically modifies at least one property of the current-carrying winding during machine operation in response to the sensed machine property or parameter. | 2011-11-24 |
20110285254 | SELF-STARTING ELECTROMOTOR - A self-starting electromotor having a stator and a rotor, the stator including at least one stator module of N toroid shaped electromagnets, the electromagnets arranged along an arc a predetermined distance apart defining a stator arc length. Each of the electromagnets has at least one gap. The rotor includes a disc adapted to pass through the at least one gap. The disc includes a plurality of permanent magnets spaced side by side about a periphery thereof and arranged so as to have alternating north-south polarities. The permanent magnets are sized and spaced such that within the stator arc length the ratio of permanent magnets to electromagnets is N+1 to N, to where N is the number of electrical excitation phases applied to the electromagnets. | 2011-11-24 |
20110285255 | ALTERNATOR - An alternator is provided with a rectifier including a positive-side and a negative-side heatsink that cool rectifier elements corresponding to each heatsink and a circuit board that holds the positive-side and the negative-side heatsink, wherein one of either the positive-side and the negative-side heatsink or the circuit board is provided with engaging holes, and the other with engaging protrusions that are engaged with the holes. | 2011-11-24 |
20110285256 | Motor with rotor-mounted control circuitry - A rotating electromechanical machine has a rotor having at least one current-carrying winding and at least one rotor-mounted sensor configured to sense a machine property or parameter during machine operation. Rotor-mounted circuitry dynamically modifies at least one property of the current-carrying winding during machine operation in response to the sensed machine property or parameter. | 2011-11-24 |
20110285257 | Ergonomically Improved Arm Portal and Pass Box Assembly - An arm portal for ingress and egress within an enclosed, controlled environment, such as an incubator, employs asymmetric orifices to obtain superior arm mobility. The hand/arm portals along with the pass box can be manufactured into a one-piece injection molded assembly that is easily attached to the front face of an enclosed anaerobic environment. | 2011-11-24 |
20110285258 | Protection Shell of a Type Suitable for Supporting a Touch Tablet Personal Computer in Multiple Positions - A protection shell of a type suitable for supporting a touch tablet personal computer in multiple positions includes: a protection bottom cover having a recess on a back portion thereof, the recess being provided with holes at an upper portion thereof and with guiding slots at both sides of a middle portion thereof; a supporting cover having a thickness smaller than or equal to the depth of the recess of the protection bottom cover, with protrusions rotatably connected with the holes of the protection bottom cover; and a supporting plate with one end rotatably connected to a middle portion of the supporting cover and the other end having slide blocks received within the guiding slots of the protection bottom cover. The protection shell is portable, and stable and simple in structure, whereby the production efficiency is improved. | 2011-11-24 |
20110285259 | COMPUTER ENCLOSURE - A computer enclosure includes a computer panel, an expansion card shield, and a retaining member. The computer panel defines a slot and has a support piece located above the slot. The expansion card shield includes a main piece covering the slot and a resisting piece abutting on the support piece of the computer panel. The retaining member is pivotably attached to the computer panel and includes a main portion and a clasping portion connected to the main portion. The retaining member is capable of rotating to a closed position where the main portion resists against the expansion card shield and the clasping portion is secured to the computer panel, or rotating to an open position where the main portion is disengaged from the expansion card shield and the clasping portion is disengaged from the computer panel. | 2011-11-24 |
20110285260 | LAUNDRY MACHINE - A laundry machine for treating laundry is disclosed. The laundry machine includes a front gasket ( | 2011-11-24 |
20110285261 | RACK HOUSING FOR ACCOMMODATING A PLURALITY OF FANLESS, PLUG-IN COMPONENTS - A rack housing that accommodates a plurality of fanless, plug-in components includes a plurality of plug-in positions that accommodate the plurality of fanless, plug-in components in a first region of the rack housing bordering a first housing side, at least one installation chamber that accommodates at least one add-on component with at least one fan, and at least one low-pressure chamber in a second region of the rack housing bordering the first region, wherein 1) first openings are provided between the low-pressure chamber and the plug-in positions, which openings allow a discharge of air heated by the plug-in components into the low-pressure chamber, 2) the at least one installation chamber and the at least one low-pressure chamber are essentially decoupled from each other with respect to cooling air, and 3) the installation chamber is connected to the low-pressure chamber via at least one connector for forced ventilation. | 2011-11-24 |
20110285262 | LAUNDRY WASHING APPARATUS - The present invention relates to a laundry washing apparatus and particularly to a laundry washing apparatus comprising a base that forms a lower face, front/rear plates that form front and rear directions, side plates that form both sides, and a top plate that forms an upper part, wherein the top plate is further furnished with a locking device that controls the locking state of the top plate by means of an external key insertion operation, so that theft of a payment apparatus installed on the top plate can be effectively prevented. | 2011-11-24 |
20110285263 | Collapsible cabinet - A collapsible cabinet includes a non-rigid casing having a back and four sides wherein a first hinge line is formed between any two adjacent sides of the casing; a rigid back plate fitted onto the back of the casing for support; and a plurality of non-rigid storage units releasably fastened in the casing, each storage unit having a back and four sides wherein a second hinge line is formed between any two adjacent sides of the storage unit, each storage unit comprising a flexible vertical divider and a flexible horizontal divider crossed each other to divide an internal space of the storage unit into four compartments. | 2011-11-24 |
20110285264 | HANDLING OF STORAGE MEDIA CARTRIDGES - Storage media cartridge handling apparatus ( | 2011-11-24 |
20110285265 | FIBER DISTRIBUTION HUB WITH DUAL SWING FRAMES - The present disclosure relates to a telecommunications distribution cabinet having a cabinet housing in which a first swing frame and a second swing frame are pivotably mounted. | 2011-11-24 |
20110285266 | RACK AND PINION REFRIGERATOR STORAGE SYSTEM - A rack and pinion storage system for use in a refrigerator compartment defined by a liner includes a pair of supports attached to opposing sidewalls of the liner. First and second gear covers snap-fittingly connect first and second gear wheels to respective first and second mounting brackets extending from a storage basket, such that the gear wheels are rotatably connected to the storage basket and have equal rotational and linear motion along the respective supports. Retaining bars extending from the storage basket are held within channels defined between the bottom walls of the supports and top walls of opposing telescoping slide assemblies used to movably support a door of the compartment. Tabs extending from the supports limit the sliding movement of the storage basket. A removable divider connects to the storage basket, sectioning the basket into multiple storage compartments. | 2011-11-24 |
20110285267 | SOLID-STATE LIGHT BULB HAVING AN ION WIND FAN AND A HEAT PIPE - An ion wind fan can be incorporated into a solid-state lighting device to thermally manage the lighting device. In one embodiment, the lighting device has the approximate shape of an A-series light bulb and an A-series light bulb and includes a bulb body, a bulb cover coupled to the bulb body defining a bulb cavity and one or more light emitting diodes (LEDs) located inside the bulb cavity. The lighting device further includes a heat pipe to transfer heat from the one or more LEDs to one or more heat sinks, and an ion wind fan to generate an airflow in impinging on the one or more heat sinks. | 2011-11-24 |
20110285268 | LIGHT-EMITTING DEVICE - A light-emitting device for increasing light-emitting efficiency by destroying total reflection includes a substrate unit, a light-emitting unit, a strip light-guiding unit and a cover unit. The light-emitting unit has a plurality of light-emitting modules disposed on the substrate unit. The strip light-guiding unit has a plurality of strip light-guiding elements corresponding to the light-emitting modules and a plurality of strip reflective elements respectively disposed on the strip light-guiding elements. Each strip light-guiding element has a light-inputting surface facing each light-emitting module, a reflective surface and a light-outputting surface, each strip reflective element is disposed on the reflective surface of each strip light-guiding element, and the light-outputting surface is a rough surface for destroying total reflection. The cover unit has a light-permitting cover coupled with the substrate unit for selectively covering the light-emitting unit and the strip light-guiding unit. | 2011-11-24 |
20110285269 | Light-Emitting Element And Display Device Using Same - A light-emitting device includes a substrate and a light-emitting element formed on the substrate. The light-emitting element includes a stacked layer structure portion including a reflective electrode, a light-emitting layer on the reflective electrode and a transparent electrode on the light-emitting layer which are stacked over the substrate with the reflective electrode as a bottom layer, the light-emitting layer having a flat surface provided at least on a portion of the light-emitting layer. A bank is disposed in a peripheral area surrounding the flat surface or on a peripheral portion of the flat surface and has a tilt surface tilted with respect to the flat surface. A conductive film is at least provided on the tilt surface and is electrically connected with the transparent electrode, and forms a reflective surface on the tilt surface, and an optical waveguide layer is provided in an area surrounded by the tilt surface. | 2011-11-24 |
20110285270 | SPARK PLUG - A spark plug | 2011-11-24 |
20110285271 | FIELD EMISSION DEVICE - A field emission device includes an insulative substrate, an electron pulling electrode, a secondary electron emission layer, a first dielectric layer, a cathode electrode, and an electron emission layer. The electron pulling electrode is located on a surface of the insulative substrate. The secondary electron emission layer is located on a surface of the electron pulling electrode. The cathode electrode is located apart from the electron pulling electrode by the first dielectric layer. The cathode electrode has a surface oriented to the electron pulling electrode and defines a first opening as an electron output portion. The electron emission layer is located on the surface of the cathode electrode and oriented to the electron pulling electrode. | 2011-11-24 |
20110285272 | FIELD EMISSION DISPLAY DEVICE - A field emission display device (FED) is provided. The FED includes a first substrate, a phosphor layer being in contact with the first substrate, and an anode electrode on the phosphor layer. The FED further includes a second substrate facing the first substrate and including a cathode electrode and an emitter disposed toward the anode electrode. | 2011-11-24 |
20110285273 | LARGE-AREA FLEXIBLE OLED LIGHT SOURCE - A light emitting assembly includes a backplane having a first surface area and an impermeable layer. At least first and second light emitting devices are received on the first surface of the backplane, each light emitting device having a surface area less than the first surface area and electrically connected to an associated external driver. The first and second light emitting devices are positioned on the backplane in contiguous relation without a hermetic edge seal therebetween to maximize the filling factor, and an encapsulating material is received over and seals the first and second light emitting devices. | 2011-11-24 |
20110285274 | ORGANIC MATERIAL AND ORGANIC LIGHT EMITTING DIODE DISPLAY USING SAME - An organic material for an organic light emitting diode (OLED) display, and an OLED display are provided, and the organic material includes an anthracene derivative includes at least deuterium. | 2011-11-24 |
20110285275 | ORGANOMETALLIC COMPOUND, ORGANIC ELECTROLUMINESCENCE DEVICE AND COMPOSITION EMPLOYING THE SAME - Organometallic compounds and organic electroluminescence devices and compositions employing the same are provided. The organic metal compound has a chemical structure represented by formula (I) or formula (II): | 2011-11-24 |
20110285276 | Triazole Derivative, and Light-Emitting Element, Light-Emitting Device, Electronic Device and Lighting Device Using the Triazole Derivative - Objects are to provide the following: a substance that facilitates hole injection and has high triplet excitation energy; a light-emitting element having high emission efficiency using the substance that facilitates hole injection and has high triplet excitation energy; a light-emitting element having low driving voltage; and a light-emitting device, an electronic device, and a lighting device having low power consumption. Provided is a triazole derivative in which a dibenzothiophen-4-yl or dibenzofuran-4-yl group represented by General Formula (G2) is bonded to any one of Ar | 2011-11-24 |
20110285277 | ELECTROLUMINESCENT DEVICE - The invention discloses an electroluminescent device ( | 2011-11-24 |
20110285278 | ELECTROLUMINESCENT DEVICE - The invention relates to an electroluminescent device ( | 2011-11-24 |
20110285279 | ENCAPSULATED ELECTROLUMINESCENT DEVICE - This invention relates to an electroluminescent device ( | 2011-11-24 |
20110285280 | ORGANOMETALLIC COMPLEXES AS PHOSPHORESCENT EMITTERS IN ORGANIC LEDS - Organic light emitting devices are described wherein the emissive layer comprises a host material containing an emissive molecule, which molecule is adapted to luminesce when a voltage is applied across the heterostructure, and the emissive molecule is selected from the group of phosphorescent organometallic complexes, including cyclometallated platinum, iridium and osmium complexes. The organic light emitting devices optionally contain an exciton blocking layer. Furthermore, improved electroluminescent efficiency in organic light emitting devices is obtained with an emitter layer comprising organometallic complexes of transition metals of formula L | 2011-11-24 |
20110285281 | PLASMA DISPLAY PANEL - A plasma display panel includes a front plate and a rear plate disposed in such a manner as to face the front plate. The front plate has a display electrode and a dielectric layer covering the display electrode. The dielectric layer contains substantially no lead components but contains MgO, SiO | 2011-11-24 |
20110285282 | DEUTERIUM LAMP - A deuterium lamp is provided having a lamp base ( | 2011-11-24 |
20110285283 | RADIANT TUBE AND PARTICLE ACCELERATOR HAVING A RADIANT TUBE - A radiant tube ( | 2011-11-24 |
20110285284 | Light Emitting Device Using AC and Manufacturing Method of the Same - The present invention relates to a light emitting device using AC, comprising: at least one LED chip and an AC driving circuit chip, wherein the AC driving circuit chip comprises a substrate and a rectifying circuit integrated on the substrate. The LED chip is flipped and bonded on the AC driving circuit chip by flip-chip technology and electrically connected to the rectifying circuit, and the AC driving circuit chip converts the AC into DC for supply to the LED chip. The present invention further relates to a method of manufacturing the light emitting device using AC, comprising the following steps of: (1) forming an LED chip; (2) integrating a rectifying circuit on a substrate, forming two power source connecting terminals on the substrate, and forming an AC driving circuit chip; and (3) flip-chip bonding the LED chip on the AC driving circuit chip and in electrical connection with the rectifying circuit on the substrate. The light emitting device according to the present invention can be used by being directly connected to AC without needing any external integrated circuit device or electronic parts, thereby saving the assembling space and improving flexibility in use and meanwhile enhancing use efficiency of the light emitting regions. | 2011-11-24 |
20110285285 | MECHANICAL TURNPLATE TYPE ROTATABLY DIMMING DEVICE AND DIMMING METHOD THEREOF - A mechanical turnplate type rotatably dimming device has a bottom part ( | 2011-11-24 |
20110285286 | LIGHT SOURCE - A lamp has a solid plasma crucible | 2011-11-24 |
20110285287 | LIGHT SOURCE - A lamp comprises a light source in the form of a light emitting resonator | 2011-11-24 |
20110285288 | SOLID STATE LIGHTING DEVICE - A solid state lighting device includes a thermally conductive plate having a subassembly mounted to at least one side of the plate. Each subassembly includes a mounting frame with a back side and an open center, and a PCB supporting a plurality of LEDs with electrical leads extending therefrom. The PCB is supported by the frame so that the back of the PCB is flush with the back side of the frame. A cup-like light diffuser having a rim is secured to the front of the frame so that it surrounds the frame and covers the LEDs. Fastening devices fasten the subassembly against the one side of the plate so that the back of the PCB is in intimate thermal contact with the plate and the diffuser rim abuts the plate so that when the LEDs are energized via their leads, a maximum amount of light from the LEDs is directed through the diffuser and waste heat from the LEDs is efficiently conducted away by the plate which may also constitute a reflector. | 2011-11-24 |
20110285289 | Light Emitting Diode Bulb - A LED bulb comprising a support having at least one LED mounted on a first side, the at least one LED being electrically coupled to a circuit mounted on a second side of the support for driving the LED bulb at a first or a second light intensity level, the circuit comprising input terminals connectable to a power supply for receiving an input voltage; a LED driver component for adjusting the input voltage supplied to the at least one LED; a comparator circuit for detecting the input voltage and if above a threshold voltage closing a switch to drive the LED bulb at the first light intensity level. | 2011-11-24 |
20110285290 | ELECTRONIC DEVICE - An electronic device is provided. The electronic device comprises a display and a display surround member located adjacent to a peripheral edge of the display and extending at least partially along the peripheral edge of the display. The display surround member comprises a colour change mechanism enabled to change the colour of the display surround member between a first colour and a second colour in response to an application being run on the portable electronic device. | 2011-11-24 |
20110285291 | Control unit for controlling an illumination device for a motor vehicle as well as an illumination device for a motor vehicle with such a control unit - A controller controls an illumination device of a motor vehicle including at least one light source. The controller includes at least one first stage that provides electric energy for supplying power to the illumination device. At least one second stage forwards the electric energy to the light source. The first stage includes intelligence for controlling the illuminating device, a first supplier for supplying the illumination device with control signals, a generator for generating a constant intermediate voltage, and a second supplier for supplying the second stage with the intermediate voltage. The second stage includes a converter for conversion of the intermediate voltage into a supply voltage suitable for supplying the power to the light source, a third supplier for supplying the light source with the supply voltage, and a mechanism for controlling the light source in dependency on the control signals. Also, an illumination device for a motor vehicle includes the controller. | 2011-11-24 |
20110285292 | LED-BASED LUMINAIRES FOR LARGE-SCALE ARCHITECTURAL ILLUMINATION - Disclosed herein are exterior architectural fixtures employing LED-based light sources that are capable of projecting light over long distances and providing a wide variety of lighting effects with high lumen output. These lighting fixtures have improved heat dissipation properties and are particularly suitable for large-scale façade washing and for illuminating large architectural structures, such as skyscrapers, casinos, and retail establishments, integrating efficient and compact power supply and control components for driving high-intensity LEDs to achieve a vast variety of lighting effects on a large scale. | 2011-11-24 |
20110285293 | Multiple Failure Detection Shutdown Protection Circuit for an Electronic Ballast - A shut-down circuit configured for use with an electronic ballast coupled to a lamp in a control path includes a device for sensing the electrical energy associated with the control path, and a sensing circuit for shutting down the ballast in the event that the energy does not conform to a predetermined condition. The sensed energy may be current indicative of lamp installation or short circuit, or voltage indicative of arcing or open circuit. The device for sensing the electrical energy associated with the control path may be an isolation transformer, or alternative devices such as optical isolators may be employed. The circuitry may further include electronic componentry to disable the sensing circuit during initial energization of the lamp. In one disclosed example, the sensing circuit includes a node that should be at or near a predetermined electrical potential when the lamp is operating properly, and a switch such as a Schmitt trigger coupled to the node that turns on or off to shut down the ballast if the node is not at or near the predetermined electrical potential. In an implementation used to detect voltage fluctuations indicative of arcing, the circuitry may include a high-pass filter or differentiator and detector to detect high-frequency noise. Alternatively, a phase-locked loop may be coupled to a low-pass filter to detect high-frequency noise indicative of arcing. In another alternative implementation, a microprocessor performing a digital signal processing algorithm may determine the presence of an abnormal condition. | 2011-11-24 |
20110285294 | LIGHT EMITTING DIODE PRECISION APPROACH PATH INDICATOR (LED PAPI) - Described herein is a LED PAPI having an array of light emitting diodes (LEDs), the array of LEDs comprising a first set of LEDs emitting a first color and a second set of LEDs emitting a second color. Light from the array of LEDs passes through a pair of apertures separated by a precision ground blade. The precision ground blade has a first edge that is closest to the array of LEDs and a second edge opposite the first edge. The first and second edges have different thicknesses. After passing through the apertures, the light passes through a first lens and a second lens. | 2011-11-24 |
20110285295 | ARTIFICIAL SOLAR LIGHT SYSTEM USING A LIGHT EMITTING DIODE - The present invention relates to an artificial solar light system, and more particularly, to an artificial solar light system using light emitting diodes. The present invention can provide an artificial solar light system using light emitting diodes, which can represent the same light emission effects as the sun with time. Further, the present invention can provide an artificial solar light system using light emitting diodes, which is inexpensive and is not affected by positions or climate. | 2011-11-24 |
20110285296 | CARPET UNIT COMPRISING OPTICAL SENSOR - The invention provides a carpet unit comprising a laminate of a tufted primary backing layer providing a carpet unit top face, an intermediate adhesive layer, and a backing layer providing a carpet unit back face, wherein the carpet unit is selected from the group consisting a carpet and a carpet tile, wherein the carpet unit further comprises an optical sensor, arranged to generate a sensor signal, wherein, seen from carpet unit top face, the optical sensor is arranged behind the primary backing layer, and wherein the carpet unit is arranged to transmit light from the carpet unit top face to the optical sensor. | 2011-11-24 |
20110285297 | DRIVING CIRCUIT USED FOR CURRENT-DRIVEN DEVICE AND LIGHT EMITTING DEVICE - A driving circuit is adapted to drive a current-driven device. The driving circuit includes a first power supply circuit and a second power supply circuit. The first power supply circuit is for supplying a first positive voltage to a first terminal of the current-driven device. The second power supply circuit is for enabling a current flowing along a first current flow direction in a first time period and thereby a second terminal of the current-driven device is given a second positive voltage. The second power supply circuit further is for enabling a current from the current-driven device flowing out of the second power supply circuit along a second current flow direction. The first current flow direction and the second current flow direction are different directions in the second power supply circuit. Moreover, a light emitting device using the above-mentioned driving circuit also is provided. | 2011-11-24 |
20110285298 | Illumination Module - A luminous module for a luminous chain may include at least one light source; and at least one electrical connection configured to supply the at least one light source, wherein the luminous module includes a heat sink. | 2011-11-24 |
20110285299 | DECORATIVE LIGHT STRING - A decorative light string includes a controller having a master mode and a slave mode, with the master mode being the default. A light strand including a plurality of light emitting elements is operatively coupled to the controller, as is a light pattern selector. In the master mode, the controller is configured to control the light emitting elements according to a setting input at the light pattern selector. A mode select circuit is electronically coupled to the controller, and the controller is configured to enter the slave mode when a control signal is received by the mode select circuit. | 2011-11-24 |
20110285300 | Constant-Current Controller for LED Light String - A constant-current controller for a LED light string has a control unit, multiple constant current circuits, multiple first switches and multiple second switches. The control unit outputs driving signals to turn on the first switches, causing the second switches being turned on subsequently. Therefore, the constant current circuits output electric currents flowing through the second switches to activate the LED light string. | 2011-11-24 |
20110285301 | TRIAC DIMMER COMPATIBLE SWITCHING MODE POWER SUPPLY AND METHOD THEREOF - Triac dimmer compatible switching mode power supplies used as LED drivers are disclosed herein. A PFC controller is configured in the switching mode power supplies. With the PFC controller, the current keeping the triac in the on-state is supplied by the DC/DC converter, and the LC resonance is reduced. | 2011-11-24 |
20110285302 | LED Driver for Driving LED Lighting Device at High Frequency - A driver device for driving an LED lighting device includes at least one power switch adapted to operate at a switching frequency of greater than 500 KHz and adapted to control the driving current provided to the LED lighting device. Operating the power switch at such a high frequency allows a substantial reduction in passive devices such as inductors and capacitors. | 2011-11-24 |
20110285303 | DIMMER CONTROL CIRCUIT FOR SELECTING BETWEEN STEP DIMMING MODE AND PHASE-CUT DIMMING MODE - The present invention relates to a dimmer control circuit ( | 2011-11-24 |
20110285304 | Error Amplifier and LED Circuit Comprising the Same - An error amplifier and a LED circuit comprising the same are provided. The LED circuit comprises an inductor, a group of LEDs and a power MOS connected to the inductor, an error amplifier and a pulse width modulator controlling the gate of the power MOS according to an error amplifier output. The error amplifier comprises a differential input stage, an output stage having a first NMOS, a first PMOS, a second NMOS, a second PMOS and a control switch module. During a first operation mode, the control switch module connects the first NMOS and PMOS and connects the second NMOS and PMOS, and during a second operation mode, control switch module disables the second NMOS and PMOS. | 2011-11-24 |
20110285305 | LIGHT EMITTING DEVICE - A display device in which characteristic change of an organic light emitting layer due to deterioration or temperature change can be detected to keep the constant luminance of a light emitting element is provided. A monitor region is provided in addition to a pixel portion for display. A plurality of monitor elements is arranged in the monitor region. A switching circuit is provided so as to prevent a large amount of current from flowing in a shorted monitor element among the plurality of monitor elements. As a result, by monitoring potential change between electrodes of the monitor element, the voltage or the current that is supplied to a light emitting element in the pixel portion for display can be corrected in accordance with time degradation or temperature change. | 2011-11-24 |
20110285306 | EXTERNAL RESONATOR ELECTRODE-LESS PLASMA LAMP AND METHOD OF EXCITING WITH RADIO-FREQUENCY ENERGY - Described is an electrode-less plasma lamp comprising a gas-fill vessel, a gas-fill contained within the gas-fill vessel, an RF electromagnetic radiation source, an RF electromagnetic resonator, an output probe that couples RF energy from the RF electromagnetic resonator to the gas-fill vessel, an input probe that couples RF energy from the RF electromagnetic radiation source to the resonator, and a grounding strap that holds a metal veneer surrounding the resonator and a portion of the gas-fill vessel at RF ground. Also described are many variations of the electrode-less plasma lamp, non-limiting examples of which include embodiments that employ other probes in a Dielectric Resonant Oscillator to drive the lamp, a lamp employing more than one resonator per gas-fill vessel, and many methods of improving light-harvesting, including raising the gas-fill vessel away from the resonator via a coaxial transmission line, and collecting light with an optical reflector. | 2011-11-24 |
20110285307 | LED LIGHTING APPARATUS - An LED lighting apparatus includes a triac dimmer | 2011-11-24 |
20110285308 | Dimmable thermally controlled safety light emitting diode illumination device - A Light Emitting Diode safety illumination device with thermal control and dimming compatibility for use with incandescent light dimmers and light fixtures. Circuit method and structure combine to provide thermal curve management of temperature control parameters overriding and taking priority over power and dimming of the intensity of illumination. | 2011-11-24 |
20110285309 | SOLID STATE LIGHTING DEVICES UTILIZING MEMRISTORS - LED chip circuits, solid state light engines and SSL luminaires are disclosed that utilize memristors to vary LED chip emission. In different embodiments the resistance of said memristor can be varied to vary the drive signal applied to one or more LED chips, thereby varying the LED chip emission intensity. The present invention can be used in much different arrangement to vary LED chip emission, such as changing the drive signals to LED chips that experience changes in emission intensity at different temperatures or that experience emission intensity depreciation over time. | 2011-11-24 |
20110285310 | LIGHTING CONTROL FAILSAFE CIRCUIT - A system may include a switch arranged to control a lighting load, a processor arranged to control the switch, and a failsafe circuit arranged to monitor the processor and actuate the switch if the processor fails. The failsafe circuit may have a time constant, and may be arranged to actuate the switch if the monitor signal does not include a pulse during a period of time equal to the time constant. | 2011-11-24 |
20110285311 | Control Circuit and Light Emitting Diode Driver and Method Using Thereof - A control circuit applied in a light emitting diode (LED) driver includes a counter, a sample circuit, and a signal source. The counter counts a parameter indicating the duty cycle width of a dimming signal in response to a front edge of the dimming signal. The sample circuit obtains a sample signal by means of sampling the most significant bit (MSB) of the parameter in response to the rear edge of the dimming signal. The duty cycle width is determined to be greater than a threshold value and smaller than that when the sample signal corresponds with a terminal value and an initial value, respectively. The signal source provides a reference voltage corresponding to first level and that corresponding to second level, higher than the first level, to drive a boost converter of the LED driver in response to the terminal value and the initial value, respectively. | 2011-11-24 |
20110285312 | Integrated Three Dimensional Inductor and Method of Manufacturing Same - An integrated 3-dimensional inductor device is provided. The inductor device includes a substrate having an electrical trace and a 3-dimensional inductor attached to the substrate. The inductor includes a magnetic core and a coil whose windings are formed from the electrical traces of the substrate and conductive material in the interconnect vias. | 2011-11-24 |
20110285313 | Light-emitting element driving device and display device - A light-emitting element driving device includes: a plurality of light emitters; a power supply; a plurality of current control transistors; a plurality of constant-current circuits; a voltage selecting circuit; a control circuit; and a voltage controller. | 2011-11-24 |
20110285314 | Linkable Linear Light Emitting Diode System - A linkable linear light emitting diode (LED) system provides apparatus and method for mechanically, optically, and electrically linking multiple LED modules disposed over a wide and separated area of a ceiling system. Openings can be cut in ceiling tiles of a drop ceiling system and the LED lighting modules are coupled to the tile through the opening, with the tile being sandwiched between different portions of the module. A remote driver system is placed within the drop ceiling above the tiles and provide multiple connectors for powering a multitude of lighting modules. Certain of the LED lighting modules include both input and output connectors for both receiving power or data and providing power or data to other modules. In this manner, some of the modules act as master LED lighting modules and those receiving power and/or data therefrom are act as slave modules. | 2011-11-24 |
20110285315 | LIGHTING DEVICE, LIGHTING SYSTEM, AND METHOD OF USE - A portable lighting device having one or more inputs, at least a first and second output, one or more light sources, an input sensor, an output sensor, an adaptive buck converter, a boost mechanism, an internal power source, and a controller. The input sensor is coupled to the one or more inputs and the output sensor is coupled to the first output. The input and output sensors are coupled to the adaptive buck converter and the boost mechanism and also to the controller. The controller is configured to instruct the adaptive buck converter to condition power inputs at the one or more inputs. The controller is configured to instruct the boost mechanism to boost a stored output from the internal power source. | 2011-11-24 |
20110285316 | Error Amplifier and LED Circuit Comprising the Same - An error amplifier and a LED circuit comprising the same are provided. The LED circuit comprises an inductor, a group of LEDs and a power MOS connected to the inductor, an error amplifier and a pulse width modulator controlling the gate of the power MOS according to an error amplifier output. The error amplifier comprises a differential input stage, an output stage having a NMOS, a PMOS and an adjusting current source connected to the gate of the PMOS. During a first operation mode, a control voltage makes the adjusting current source turn on, and during a second operation mode, the control voltage makes the adjusting current source turn off. | 2011-11-24 |
20110285317 | METHOD AND CIRCUIT ARRANGEMENT FOR CONTROLLING A LOAD - A method for control and discharge control of an electrical load, in which the control and discharge occurs by means of a control frame and a discharge frame, and in which one control frame and one discharge frame represent one switching cycle for the electrical load. A plurality of switching cycles are arranged following one another, wherein a controllable switch is connected in parallel to each point load so that each point load can be switched independently of the other point load during the switching cycle. A control unit monitors the electrical current flowing in the electrical load, and the control unit uses an actual/setpoint comparison to control the current to an adjustable setpoint so that a current that is as constant as possible flows into the electrical load. The controllable switches switch on the point loads during the control frame of a switching cycle, and the controllable switches switch off the point loads during the discharge frame of a switching cycle. | 2011-11-24 |
20110285318 | Compact and efficient driver for multiple light emitting diodes (LEDs) - A method includes receiving a variable reference voltage at a power converter and generating a regulated output voltage based on the variable reference voltage. The method also includes sequentially driving multiple sets of light emitting diodes (LEDs) using the regulated output voltage, where each set includes at least one LED. The variable reference voltage varies based on the set of LEDs being driven. For example, the method could include receiving a first reference voltage, generating a first output voltage based on the first reference voltage, and driving a first set of LEDs using the first output voltage. The method could then include receiving a second reference voltage, generating a second output voltage based on the second reference voltage, and driving a second set of LEDs using the second output voltage. At least one additional set of LEDs could be driven concurrently with the sequential driving of the multiple sets of LEDs. | 2011-11-24 |
20110285319 | LIGHT SOURCE MODULE - A light source module is provided. The light source module includes a full wave rectifier, a constant current output integrated circuit (IC) and at least one high operating voltage light emitting diode (HVLED) die coupled between the constant current output IC and a ground. The full wave rectifier generates a rectified signal according to an alternating current (AC) power. The constant current output IC outputs a constant current signal according to the rectified signal. A brightness of the HVLED die is determined by the constant current signal. | 2011-11-24 |
20110285320 | POWER SUPPLY FOR AN AIRFIELD LED SIGN - In an example embodiment, there is disclosed a power supply that comprises a rectifier for receiving an alternating current, a boost circuit coupled to the rectifier and receiving the rectified alternating current, and a processor coupled to the boost circuit. The processor is operable to control the operation of the boost circuit. The processor is operable to control the boost circuit to provide a constant, regulated current to a load by controlling the voltage at the output of the boost circuit. The constant, regulated current provided to the load is independent of the magnitude of the alternating current | 2011-11-24 |
20110285321 | LIGHT SOURCE DRIVING CIRCUIT WITH LOW OPERATING OUTPUT VOLTAGE - A driving circuit for regulating current in a light source using a tracking component. The tracking component detects the voltage difference between an input node in the input stage and an output node in the output stage. The input stage is connected to a current source and includes an input transistor. The output stage is connected to the light source and includes an output transistor. The tracking component generates an output that controls the input and output transistors based on the voltage difference between the input node and the output node so that the voltage at the input node tracks the voltage at the output node. By using the tracking component, the LED driver can achieve accurate current control through one output transistor instead of cascaded transistors, resulting in lower output operating voltage and reduced power dissipation of the LED driver. Further, the tracking component is intermittently operated or shared across different channels to reduce energy consumption of the LED driver. | 2011-11-24 |
20110285322 | GAS-DISCHARGE LAMP CONTROLLER UTILIZING A NOVEL PREHEATING PHASE CONTROL MECHANISM - A gas-discharge lamp controller utilizing a novel preheating phase control mechanism, having: a supply voltage tracking reference voltages generator, biased between a supply voltage and a reference ground, for generating a first reference voltage which is proportional to the supply voltage; and a control unit, for generating a high threshold signal according to the first reference voltage and a saw-tooth signal, the peak value of the saw-tooth signal being proportional to the supply voltage, wherein the control unit has a preheating phase, the high threshold signal is coupled with the first reference voltage during the preheating phase, and the time duration of the preheating phase is set by a predetermined number of periods of the saw-tooth signal. | 2011-11-24 |
20110285323 | DRIVING CIRCUIT WITH DIMMING CONTROLLER FOR DRIVING LIGHT SOURCES - A dimming controller for controlling dimming of a light-emitting diode (LED) light source includes a monitoring terminal and a control terminal. The monitoring terminal receives a switch monitoring signal indicative of an operation of a power switch which transfers power from an AC power source to a bridge rectifier when the power switch is on. A power converter receives input power from the bridge rectifier and provides output power to the LED light source. The control terminal generates a control signal to adjust the output power according to the switch monitoring signal so as to control dimming of the LED light source. | 2011-11-24 |
20110285324 | CURRENT REGULATING CIRCUIT AND LIGHT EMITTING DIODE DEVICE HAVING THE SAME - A current regulating circuit is for connection in series between a light emitting diode (LED) and a power source, and includes: a first resistive unit having a first resistance that is proportional to an operation temperature of the LED when the operation temperature is above a predetermined threshold temperature; and a second resistive unit connected in series with said first resistive unit, and having a second resistance that is inversely proportional to the operation temperature of the LED when the operation temperature is above the predetermined threshold temperature. When the operation temperature of the LED is above the predetermined threshold temperature, an effective resistance of said current regulating circuit attributed to said first and second resistive units is proportional to the operation temperature of the LED, and absolute value of a rate of change of the first resistance is larger than that of the second resistance. | 2011-11-24 |
20110285325 | LED DRIVING DEVICE AND DRIVING SYSTEM THEREOF - A light emitting diode (LED) driving device outputs a driving signal according to a select signal, an update data, and an update command. The driving device includes a buffer circuit, a display data storage, and a signal generating circuit. The buffer circuit includes register series and a bypass register. The buffer circuit selectively stores the update data in the register series and the bypass register according to the update command. The display data storage stores multiple display data. The display data storage updates the display data by using the update data stored in the register series according to the update command. The signal generating circuit outputs the driving signal according to the display data. When the update data is stored in the bypass register, the clock of the update data passing through the driver is reduced. | 2011-11-24 |
20110285326 | DISPLAY DEVICE SUBSTRATE AND MANUFACTURING METHOD THEREFOR - A display device substrate to be bonded to a driving substrate provided with a driving circuit for driving a plurality of organic electroluminescent elements, the display device substrate comprising a substrate main body; a plurality of organic electroluminescent elements provided on the substrate main body; a bank sectioning the plurality of organic electroluminescent elements on the substrate main body; a protruding pedestal provided on the substrate main body; and a first connecting electrode arranged so as to extend from the organic electroluminescent element and over the pedestal, wherein in a state where the display device substrate has been bonded to the driving substrate, the pedestal is arranged at a position where the first connecting electrode arranged on the pedestal is connected with a second connecting electrode that the driving circuit has, and the bank and the pedestal have the same height. | 2011-11-24 |
20110285327 | COOLING SYSTEMS AND METHODS - An ion therapy system comprises a particle accelerator ( | 2011-11-24 |
20110285328 | Electric Motor Assist Bicyle - Methods, systems and apparatus for an electric motor assist bicycle having a hub motor mounted to the front or rear hub to provide electric motor assist, and to function as a generator to charge batteries. The motor can be either a molded or wound magnetic flux channel transverse wound stator permanent magnet motor. The bicycle hub motor includes an electronic controller mounted to the frame of the bicycle and coupled with feedback electronics for monitoring a timing, speed and direction and coupling a signal to a processing unit for adjusting the drive electronics driving the phase windings. The pedal crank arm housing of the electric motor assist bicycle can include battery access ports with batteries stacked inside the bicycle seat tube and the down tube and a strain gauge to measure the rider pedaling effort and produce a signal in response. | 2011-11-24 |
20110285329 | Method and Device for Controlling the Rotation Speed of a Piezoelectric Motor Rotor - The present invention relates to a method of controlling the speed of rotation of a piezoelectric motor comprising at least one step of determining the variation of the speed of rotation as a function of the frequency of the excitation voltages of the piezoelectric motor for the actual temperature of the piezoelectric material. | 2011-11-24 |
20110285330 | DRIVER CIRCUIT AND METHOD FOR CONTROLLING A CAPACITIVE ELEMENT - The disclosure pertains to a method of charging or discharging a capacitive element, such as a piezoelectric crystal. The disclosure also pertains to a device that implements charging of a capacitive element according to said method. The device comprises a bipolar buck-boost converter, whereby a capacitive element can be charged with both positive and negative voltages. The discharge of the capacitive element is provided with energy recovery and feedback to the device's power supply. | 2011-11-24 |
20110285331 | OSCILLATOR CIRCUIT WITH FREQUENCY SWEEP FUNCTION - With an oscillator circuit with a frequency sweep function, a first counter counts a reference clock for a number of counts that corresponds to a digital first setting signal, and generates a first count completion signal which is asserted on completion of the count. A D/A converter converts a digital second setting signal into an analog control voltage. A VCO oscillates with a frequency according to the control voltage. When the first count completion signal is asserted, the VCO is reset. An output combining unit receives the output signal of the VCO, generates the output signal of the oscillator circuit, and generates the first setting signal and the second setting signal. | 2011-11-24 |
20110285332 | CONTROLLER FOR ELECTRICAL MACHINES - The present invention relates to control of electrical machines and in particular, though not exclusively, to control of synchronous machines such as hybrid stepping motors, flux switching machines and brushless permanent magnet motors and generators. A sensorless control system for an electrical machine is provided comprising a rotor, a stator having one or more phase windings for generating a rotating stator magnetic field, the system comprising detection means for monitoring the currents in the phase windings providing a real component I | 2011-11-24 |