Abstract: A power supply device comprises a bidirectional voltage converter unit that performs voltage stepping up or voltage stepping down between a first terminal and a second terminal; a first switching unit that applies a DC voltage obtained from the first electric power supply source to the first terminal; a second switching unit that applies a DC voltage obtained from the second electric power supply source to the first terminal; a third switching unit that applies a DC voltage obtained from the first electric power supply source to the second terminal; an output unit that outputs a predetermined DC voltage from the second terminal; and a switching control unit that controls switching of the first switching unit, the second switching unit and the third switching unit.

Abstract: A power supply system and a power supply-side control unit and an electric vehicle are described. The power supply device comprises a plurality of power storage devices connected in parallel. When the temperature of any power storage device is higher than the predetermined temperature TH, the power supply-side control unit 211 performs the duty ratio control for the power storage devices. Also, the power supply-side control unit 211 transmits a temperature control notification signal indicative of the current temperature control condition to a load-side control unit 221, which in turn controls the electric power that is consumed or generated by the load 220 on the basis of the temperature control notification signal. The life of the power supply device as a whole is therefore prevented from shortening by inhibiting the temperature rise and temperature variation in each power storage device. It is also possible to prevent the power supply system from halting due to occurrence of an error.

Abstract: The present disclosure relates to circuits and methods for improving the performance of plural DC-DC voltage converters.

Abstract: Power is supplied to an information handling system chipset with a single voltage regulator having dual phases. A first phase of the voltage regulator provides power to a low power state power rail in an independent mode to support a low power state, such as a suspend or hibernate state. A second phase of the voltage regulator provides power to a run power state power rail in combination with the first phase by activation of a switch, such as a MOSFET load switch, that connects the low power state power rail and the run power state power rail. Voltage sensed from both power rails is applied to control voltage output so that the run power state power rail is maintained within more precise constraints than the low power state power rail.

Abstract: An outlet apparatus with power classification management which receives a control signal from a far end remote controller, and comprises at least one socket, a communication module, and a microprocessor. Wherein the sockets may be classified into a plurality of socket groups, which include at least one uncontrollable socket group and at least one controllable socket group. The communication module receives the control signal, and the microprocessor is coupled with the communication module and the socket groups for respectively controlling the controllable socket groups with respect to providing power or not according to the control signal.

Abstract: A traction inverter circuit includes a first energy storage device configured to output a DC voltage, a first bi-directional DC-to-AC voltage inverter coupled to the first energy storage device, and a first electromechanical device. The first electromechanical device includes a first plurality of conductors coupled to the first bi-directional DC-to-AC voltage inverter, a second plurality of conductors coupled together, and a plurality of windings coupled between the first plurality of conductors and the second plurality of conductors. The traction converter circuit also includes a charge bus comprising a first conductor coupled to the second plurality of conductors of the first electromechanical device, the charge bus configured to transmit a charging current to or receive a charging current from the first electromechanical device to charge the first energy storage device via the first electromechanical device and the first bi-directional DC-to-AC voltage inverter.

Abstract: The invention provides a power generation system having a power generator (1) configured to generate DC power; an electric power load (5); a current detector configured to detect a current flowing between a system power supply (8) and an interconnection point (9); and a switch (4) configured to switch to supply the DC power from the power generator (1) and AC power which is fed from the system power supply (8) through the interconnection point (9), to the electric power load (5).

Abstract: An automatic start-up circuit for use in an uninterruptible power supply apparatus is provided. The uninterruptible power supply apparatus includes an energy storage unit and a switching circuit. The automatic start-up circuit includes an operating status detecting circuit and a secondary switch driving circuit. The operating status detecting circuit is connected to an energy storage unit connecting node for detecting an operating status of the energy storage unit through the energy storage unit connecting node, and generating an start-up control signal according to the operating status of the energy storage unit. The secondary switch driving circuit is connected to the operating status detecting circuit, a control terminal of the switching circuit and a common terminal for determining whether the switching circuit is automatically driven to be conducted to start up the uninterruptible power supply apparatus according to the start-up control signal.

Abstract: A power supply system includes a power supply device, a switch device, a detecting device and a wireless operating terminal. The power supply device is connected to an electric appliance via the switch device to supply electric power to the electric appliance. The detecting device is connected to the switch device to detect working electric potential of the power supply device and the electric appliance, thereby generating and recording detecting data of the power supply device and the electric appliance. The wireless operating terminal communicates with the detecting device for remotely receiving the detecting data from the detecting device.

Abstract: A voltage supply has a plurality of voltage sources to supply output connections. To achieve closed-loop control of the output voltage at the output connections, a closed-loop control circuit is provided that has an actuating element for each voltage source, and each respective actuating element has a current path via which a connection of the respective voltage source can be connected to an output connection. Each actuating element has an actuating signal input for setting the electrical conductivity of its current path. The closed-loop control circuit has a closed-loop controller to which the output voltage and a desired voltage signal are supplied. When a deviation occurs between the output voltage and the desired voltage signal, the closed-loop controller interacts with at least one actuating signal input in order to reduce the deviation.

Abstract: The power control of a transport system comprises an electric motor for moving the transport appliance as well as a power supply appliance of the motor, which comprises an intermediate circuit. The power supply appliance of the motor is fitted between the power source and the electric motor. The transport system further comprises a rectifier of the intermediate circuit power, which is fitted between the intermediate circuit of the power supply appliance of the motor and the supplied load for transmitting intermediate circuit power to the supplied load.

Abstract: A system for controlling a plurality of generators of a powered system, the system includes a controller configured to provide a command to energize at least a first generator and a second generator depending on an operational condition of the powered system, a switching device configured to connect the first generator and/or the second generator to the controller, and a rectifier connected between the controller and the switching device. The switch position of the switching device determines whether the first generator and/or the second generator is energized, depending on the operational condition of the powered system. A method and a computer software code for controlling a plurality of generators of a powered system are also provided.

Abstract: The present disclosure is directed to systems and methods for high-reliability power switching. A method for high-reliability power switching may comprise: (a) transferring possession of a token to first control logic controlling a first triode for alternating current (TRIAC), the TRIAC operably coupled to a first power source; (b) applying a voltage to a gate of the first TRIAC according to the possession of the token; (c) detecting a violation of a power source parameter; (d) transferring possession of the token to second control logic controlling a second TRIAC, the second TRIAC operably coupled to a second power source; (e) removing the voltage from the gate of the first TRIAC; and (f) applying a voltage to a gate of the second TRIAC.

Abstract: Described herein are embodiments of transferring electromagnetic energy that includes providing a first electromagnetic resonator structure receiving energy from an external power supply, said first resonator structure having a first mode with a resonant frequency ?1, an intrinsic loss rate ?1, and a first Q-factor Q1=?1/(2?1), providing a second electromagnetic resonator structure being positioned distal from said first resonator structure and not electrically wired to the first resonator structure, said second resonator structure having a second mode with a resonant frequency ?2, an intrinsic loss rate ?2, and a second Q-factor Q2=?2/(2?2), and transferring electromagnetic energy from said first resonator structure to said second resonator structure over a distance D that may be smaller than each of the resonant wavelengths ?1 and ?2 corresponding to the resonant frequencies ?1 and ?2, respectively. The electromagnetic resonator structures may be designed to have Q1>100 and Q2>100.

Abstract: A linear stage system is provided. The linear stage system includes a base, a carriage plate, a first shaft, a first air bushing coupled to the base, a first motor coupled to the base and the carriage plate, and a first position encoder. The first air bushing is configured to support the carriage plate via the first shaft, wherein the first air bushing utilizes the first shaft as a guide surface and is configured to support positioning of the carriage plate along an axis. The first motor is configured to create a linear motion parallel to the axis in a first motor element coupled to the carriage plate to position the carriage plate along the axis in response to a first control signal. The first position encoder is configured to determine a position of the carriage plate relative to the base.

Abstract: A vibration motor includes a first resilient member and a second resilient member providing resilient forces in opposite directions; a first vibrator and a second vibrator coupled to the first resilient member and the second resilient member respectively; a magnetic body coupled to the first vibrator to create a magnetic field; and a coil applying a current of a predetermined frequency band in the region where the magnetic field is created.

Abstract: A rotor is provided for a dynamoelectric machine having one or more windings. The windings have one or more turns, and the turns have one or more outlet ducts that are located near a chimney. When the outlet ducts are stacked one on top of another, they form substantially radially oriented passages. The heat transfer performance of a portion of the rotor can be improved by locating two or more circumferentially spaced radial ducts near the chimney. A chimney can also be formed of one or more chimney slots defined in at least a portion of the turns, where one or more chimney slots extend in a substantially slanted direction to a radial direction of the rotor. A transition region of the rotor can also include one or more diagonal flow channels, which discharge into one or more chimneys.

Abstract: A blower motor can efficiently remove heat generated by all substrate-mounted components. A rotor and a stator are housed inside a motor case. A motor substrate on which a motor driving circuit is formed is disposed in a space formed in the axial direction between (i) the rotor and the stator and (ii) an opening bottom portion of a bracket. A heat-generating component mounted on the motor substrate contacts the opening bottom portion of the bracket via a heat-dissipating member.

Abstract: In a stator structure 1 of an outer rotor generator, a pressing portion 33 provided on a first portion 31 of a connecting terminal 30 is configured to protrude inward in the radial direction of an annular coupler 20 when the connecting terminal 30 is attached to the coupler 20. The coupler 20 is formed with a circular cylindrical guide protrusion 23, and an outlet of a stator winding 5 having wound on a salient pole 10b is configured to be guided by the guide protrusion 23, bent inward in the radial direction and reach the pressing portion 33. After fusing processing, the first portion 31 on which the pressing portion 33 is provided is bent at a right angle toward a side opposed to a side with which the stator winding 5 is connected, and then a distal end thereof is locked at a lock portion 26.

Abstract: A compressor motor includes a rotor and a stator disposed radially outside of the rotor. The rotor includes a rotor core, and a plurality of magnets circumferentially arranged on the rotor core at center angles of equal intervals. The rotor core has an axial length L and, a radial length D. Each of the magnets has a thickness t. L/D<0.7, and t>(1×K×N)/(L1.5×D×P), where P is the number of poles, K is 100000, and N is a factor that depends on a compressor output.

Abstract: A dynamoelectric machine including first and second permanent magnets held by first and second magnet seats on first and second yoke portions so as to face inner circumferential surfaces of tip end portions of first and second claw-shaped magnetic pole portions. The first and second permanent magnets are magnetically oriented in a reverse direction to orientation of a magnetic field that the field coil produces. The dynamoelectric machine enables permanent magnet holding reliability to be increased, induced voltage during no-load de-energization to be suppressed, and thermal demagnetization of magnets due to high-frequency magnetic fields that are induced by stator slots to be avoided.

Abstract: A rotor (or a stator) for a superconducting electrical machine includes a mounting that is maintained at substantially ambient temperature during operation of the electrical machine and a field coil support structure. A plurality of superconducting field coils are maintained at cryogenic temperatures during operation of the electrical machine and are supported by the field coil support structure. At least one coupling element is used to fix the field coil support structure to the mounting. The field coil support structure is preferably fixed to the mounting by a plurality of substantially circumferentially extending coupling elements at a first and second axial end of the field coil support structure and the mounting such that the mounting and field coil support structure are substantially separated over their axial lengths by a vacuum gap.

Abstract: A motor includes: a stator having 12n teeth at equal intervals in a circumferential direction of the motor, with a coil being formed on each of the teeth, where n is a natural number; a rotor having magnetic poles, number of magnetic poles being one of 2n, 10n and 14n, where n is a natural number; a three phase first coil group formed by star-connecting the coils formed on the odd-numbered teeth; and a three phase second coil group formed by delta-connecting the coils formed on the even-numbered teeth, connected to the three phase first coil group in parallel.

Abstract: A technique for winding multi-turn, stranded wire coils using rectangular cables avoids the risk of damage associated with edge-wise bends.

Abstract: An insulator for a motor includes an annular section, a plurality of tooth sections and a plurality of connecting sections. The tooth sections extend radially inward of an inner circumferential surface of the annular section and are circumferentially arranged about the annular section. The connecting sections connect an inner circumferential surface of an annular section to ends of the tooth sections. Each connecting section includes a circumferential planar portion extending circumferentially from the end of a corresponding one of the tooth sections, and a radial planar portion extending radially from the end of the corresponding one of the tooth sections. Preferably, a stator includes a pair of the insulators, a motor includes the stator, and a compressor includes the motor.

Abstract: A surface acoustic wave device includes a surface acoustic wave (SAW) chip, a base that is made of resin and surround the SAW chip, and a cap that is made of resin and is bonded, by a seal member, to the base so as to define a cavity in which the SAW chip is sealed with the cap and the base, the cavity communicating with an outside of the surface acoustic wave device through a through hole formed in the seal member.

Abstract: Provided is a piezoelectric ceramic 1 containing a compound represented by the following general formula (1), as a main component and at least one element selected from Mn, Fe and Cu in an amount of 0.04 to 0.6% by mass based on the main component, and a vibrator 10 having the piezoelectric ceramic 1 and electrodes 2, 3. CaxBa1-xTiO3??(1) where, x satisfies 0.05?x?0.20.

Abstract: An ultrasonic motor, which drives a driven member using an elliptical vibration produced by synthesizing a longitudinal vibrational mode and a flexural vibrational mode as a drive force, is configured as follows. Namely, the ultrasonic motor includes a piezoelectric device, and a feed member feeding the piezoelectric device. An extensional axis of the feed member is set to an axis different from main vibrational axes of the longitudinal vibrational mode and the flexural vibrational mode.

Abstract: A novel full piezoelectric multilayer stacked hybrid actuation/transduction system. The system demonstrates significantly-enhanced electromechanical performance by utilizing the cooperative contributions of the electromechanical responses of multilayer stacked negative and positive strain components. Both experimental and theoretical studies indicate that for this system, the displacement is over three times that of a same-sized conventional flextensional actuator/transducer. The system consists of at least 2 layers which include electromechanically active components. The layers are arranged such that when electric power is applied, one layer contracts in a transverse direction while the second layer expands in a transverse direction which is perpendicular to the transverse direction of the first layer. An alternate embodiment includes a third layer.

Abstract: Conductive polymer films are respectively connected to fixed frames via a link member, and an electrolyte holding layer is placed so as to be made in contact with the conductive polymer films. The fixed frames are regulated by the link member.

Abstract: A contour resonator is provided with a vibrating body formed from a flat plate in a square shape, excitation electrodes formed on both front and back surfaces of the vibrating body and regulating a resonance frequency, and temperature characteristic adjustment films formed on surfaces of the excitation electrodes and adjusting a temperature characteristic.

Abstract: The present invention provides a piezoelectric ceramic and a piezoelectric element, which have a large dynamic d33 (dynamic piezoelectric coefficient d33), can be used even under an elevated temperature of 200° C., and exhibit a small variation between the dynamic d33 at room temperature and the dynamic d33 at 200° C. The piezoelectric ceramic of the present invention is characterized by containing 100 parts by mass of a bismuth layered compound as a main component and a total of 0.05 to 1 part by mass, in terms of oxides (MnO2 and Fe2O3), of at least one of Mn and Fe, the bismuth layered compound being represented by a compositional formula of Bi4Ti3O3O12.?(1-?)M1TiO3.?M2M3O3], wherein ? and ? satisfy the following formulae: 0.405???0.498 and 0???0.3, M1 represents at least one selected from Sr, Ba, Ca, (Bi0.5Na0.5) (Bi0.5Li0.5) and (Bi0.5K0.5), M2 is at least one selected from Bi, Na, K and Li, and M3 is at least one of Fe and Nb.

Abstract: An exemplary piezoelectric vibrating piece comprises a base formed of a piezoelectric material; and a pair of vibrating arms extending from one end of the base in a designated direction; wherein the vibrating arm comprises an arm portion in which only the inner side slopes as it becomes narrower to the distal end and a hammer-head portion that is formed wider than the arm portion at the distal end of the vibrating arms.

Abstract: Piezoelectric vibrating pieces are disclosed that have a base and a pair of vibrating arms extending from one end of the base in a designated direction. A respective groove is defined in each of the upper and lower surfaces of each vibrating arm. The grooves extend in the designated direction and have a first width. Each groove includes a respective rib feature having a second width that is narrower than the first width. A piezoelectric frame includes the piezoelectric device and an outer frame surrounding the device. A piezoelectric device includes the piezoelectric vibrating piece or piezoelectric frame, a lid, and a base.

Abstract: A piezoelectric vibration piece includes a base made of a piezoelectric material; a plurality of vibration arms which is integrally formed with the base and extends in parallel; elongate grooves which are formed along longitudinal directions of the vibration arms; and excitation electrodes which include inner electrodes disposed in the elongate grooves and side electrodes disposed in side surfaces facing the inner electrodes, wherein widening portions in which the widths of the vibration arms are widened toward the base at a joint between the vibration arms of the base are formed, and the side electrodes are led to principal surfaces and side surfaces of the widening portions.

Abstract: A brush holder (10) for a motor and having a plate-shaped base body (11) having an opening (13) for passing the motor rotor (30) therethrough, at least one brush receptacle (14) in which a carbon brush (15) is displaceably received, and an electronics can (12) projecting from the plate-shaped base body (11), closed at its side (21) adjacent to an axis (A) defined by the base body opening (13), and having an inner chamber (22) in which at least a portion of components of control electronics is received.

Abstract: A wardrobe includes two rectangular open side frames respectively made from a bamboo material, a top panel and a bottom panel respectively formed of a rectangular bamboo open frame and a number of bamboo slats and horizontally connected between the side frames at the top and bottom sides, an intermediate panels horizontally connected between the side frames and spaced between the top panel and the bottom panel and formed of a rectangular bamboo open frame and a number of bamboo slats, two supplementary bamboo frames respectively fastened to the side frames in vertical with horizontal pegs for hanging things, and a fabric covering surrounding the side frames, the top panel and the bottom panel with a roll-up shade on the front side for access control.

Abstract: An appliance with a main body portion and a pivot that allows the appliance to be pivotally mounted to a support structure so that it may be in a retracted position or a non-retracted position; said appliance having a handle portion with a first bolt recess located within said handle; and further comprising a lock body that in use is also attached to said support structure and that houses a first bolt that operably engages a first channel within said lock body; means of moving said bolt from a first position in which it is retracted within said body to a second extended position where it may engage said bolt recess and thereby lock the appliance in a retracted position against said support structure.

Abstract: A podium includes a plurality of sides and an upper surface forming an enclosure having a hollow interior space, at least one door covering an unhidden access opening for providing access to the interior space and located in a rearward one of the sides, and a sliding access panel removably covering a hidden access opening for providing access to the interior space and located in a forward one of the sides. The access panel is visibly concealed so that it is not apparent that the access panel is movable to provide access to the interior space. A lock is provided for locking and unlocking the sliding access panel in its closed position. The lock is located within the interior space so that the sliding access panel is locked and unlocked from within the interior space and the lock is not visible from outside the podium.

Abstract: A computer desk includes legs, an upper plate having a rectangular recessed portion supported by the legs, a power supply socket and a network connector exposed on the legs or on the upper plate, a drawer or a shelf attached to the upper plate or to the legs for accommodating a computer main body, a flat monitor mounted in the rectangular recessed portion in the manner that it is folded down into the rectangular recessed portion when not used and that it is raised when used, electric connectors exposed at the upper plate for connecting one or more peripheral device, a cable conduit formed at the upper plate, and power supply lines and signal lines accommodated in the cable conduit.

Abstract: A mobile operating table or surgical cart providing one or more storage areas for medical supplies and waste containers and providing a drainable top surface suitable for performing a surgical or medical procedure. The storage areas are contained within a cavity inside the mobile operating table's base or within storage trays contained within the base. The mobile operating table or surgical cart is able to be easily transported using two or more swivel casters which can be lockable to prevent unwanted movement. The top surface comprises one or more removable panels, which include at least one perforated insert allowing fluid to pass through to a drainage surface below the panels. The collected fluid is then collected into one or more waste fluid containers.

Abstract: The present invention relates generally to a switchgear apparatus. More particularly, the invention encompasses an electrical insulation barrier having knock-out features for a switchgear apparatus. The present invention also relates to enclosures for switchgear, panel boards, circuit breakers, and more particularly to an enclosure for low voltage switchgear and switchboard assemblies. The enclosure can be a walk-in type enclosure or a non-walk-in type enclosure. This invention further provides a rear barrier for switchgear vertical (section) bus insulation assembly. The rear barrier is made from a brittle material, such as, for example, a thermoset insulating material, a glass reinforced polyester laminate (GPO-2 or GPO-3) material, and has a plurality of knock-out pass-through-openings for the bus bars and other hardware.

Abstract: A sterilizable housing for a personal electronic device includes a base, a cover and a user interface. The base is configured for receiving the personal electronic device. The cover is selectively engageable to the base. Both the base and the cover are sterilizable. The user interface provides selective access to the personal electronic device, and is at least partially contiguous with a corresponding user interface of the personal electronic device.

Abstract: A three-dimensional article produced from sheet material and comprising a frame unit having a plurality of outer sides made of sheet material each of which having a different angular disposition is provided. First and second longitudinal ends of the frame unit are interconnected by a female fastener embedded in the first end and by a male fastener introduced through the second end and coupled with the female fastener. A kit for assembling the three-dimensional article comprising a plurality of expandable separate members made from sheet material and set in a flat condition is also provided.

Abstract: A lighting device includes a printed wiring board, a plurality of light-emitting elements, a sealing member, and a color conversion unit, and an adhesive layer. The sealing member has light transmitting properties and seals the light-emitting elements mounted on the printed wiring board. The color conversion unit includes a cover member of light transmitting properties, and a fluorescent substance layer provided on the inner surface of the cover member. The adhesive layer has light-transmitting properties, and adheres the sealing member to the fluorescent substance layer of the color conversion unit in an airtight manner.

Abstract: LED lighting lamps provide optimum heat dissipation efficiency, wide illumination beam angles, and substantially uniform illumination intensity. Generally, the disclosed LED lamps comprise at least one LED lighting element and a substrate with a plurality of inclined planes.

Abstract: The invention relates to a lighting device comprising a light source (31) which is mounted on a heat sink (32) having an outer contour (34). Furthermore, it comprises a cooling device (35) for dynamically cooling the light source via cooling of the heat sink by means of a fluid flowing alongside the contour of the heat sink, the cooling device having one or a plurality of cooling openings (36, 43). The cooling device is a vibrating membrane cooling system for generating a sequence of fluid pulses (39). The cooling openings are arranged alongside the heat sink. The light source comprises optical means (33) for collimating and directing light originating from the light source during operation, while the contour of the heat sink has a shape similar to that of the optical means.

Abstract: A spark plug in which the rising of a ground electrode is more reliably restrained. The spark plug includes a ground electrode having a core portion extending from a proximal end section toward a distal end section via a bent section, a heat transfer portion extending from the proximal end section toward the distal end section via the bent section, and an external layer located externally of the core portion and the heat transfer portion and extending from the proximal end section to the distal end section via the bent section. As viewed on a section of the ground electrode taken orthogonally to a direction along which the ground electrode extends, at least at an intermediate position of the bent section with respect to the direction, the center of the core portion is offset toward a center electrode from the center of the heat transfer portion.

Abstract: Afield emission device includes; a substrate, a plurality of cathode electrodes disposed on the substrate, and a plurality of fiber emitters respectively disposed on the plurality of cathode electrodes and each of the plurality of fiber emitters including; at least one conductive fiber and a plurality of carbon nanotubes disposed on surfaces of the at least one conductive fiber.

Abstract: The present invention provides an optical layered body having a good antistatic performance and good optical properties as well as an excellent durability. The present invention provides an optical layered body, comprising: an antistatic layer on a light-transmitting substrate, wherein the antistatic layer is a resin thin film layer containing at least an organic conductive material and a nonconductive polymeric material which is a resin having a glass transition temperature of 60° C. or higher or a resin obtainable by a reaction between a resin having a glass transition temperature of 60° C. or higher and a cross-linking agent.