Abstract: A plug-in power supply for supplying a consumer with a low voltage and a plug-in power supply which in operation is configured as a power adapter unit with one of its matching interchangeable mains plug units. The power adapter unit comprises a housing; a voltage transformer module for converting a mains voltage into the required low voltage in the housing; an engaging seat, for the plug unit, at an inner side of the power adapter unit to be directed towards a mains socket, the plug unit being slidably connected with the engaging seat; at least two electric contacts in the seat connecting the transformer module with contacts at an inner side of the plug unit directed towards the power adapter unit; and a locking member, at a rear profile of the engaging seat which limits the sliding of the plug unit.

Abstract: A location tracking power cord and method therefore is taught in the various embodiments. The power cord includes location module housing having a location circuit board therein. Within the location module housing, a power supply is positioned and in electrical communication with conductors extending through the cord housing. The location module housing also provides location for a communication module including a location module such as a Global Positioning System (GPS) satellite receiver and at least one cellular transceiver. In some embodiments, the power cord may be hospital grade.

Abstract: Embodiments are generally directed to a snap button fastener providing electrical connection. An embodiment of a fastener includes a first mechanical part, the first mechanical part including at least a stud portion, the first mechanical part including a first electrical connector; a second mechanical part, the second mechanical part including at least a socket portion with a spring element and the socket portion, the second mechanical part including a second electrical connector. The stud portion of the first mechanical part and the socket portion of second mechanical part, if separated, are to interlock upon the application of a first force towards each other, and, if interlocked, to separate upon the application of a second force away from each other.

Abstract: A slip ring assembly includes a stationary element, a rotatable element rotatable relative to the stationary element, and a liquid metal contact electrically coupling the rotatable element to the stationary element. The liquid metal contact includes a metallic material having a melting temperature that is less than zero degrees Celsius and a boiling temperature that is greater than four-hundred degrees Celsius to electrically couple an electrical device fixed relative to the rotatable element to an electrical device fixed relative to the stationary element through the liquid metal contact.

Abstract: A tool for mounting a terminal onto a stud contact is disclosed. The tool has a receptacle, a stud detector, and an indicator. The receptacle is open in a mounting direction and receives the terminal. The stud detector detects a final installation position of the stud contact within the receptacle. The indicator is visible from an exterior of the tool and is connected to the stud detector. The indicator has a first visual appearance and a second visual appearance different from the first visual appearance, and automatically switches between the first visual appearance and the second visual appearance based on whether the stud contact is in the final installation position.

Abstract: A connector replacement method in a network element chassis includes obtaining physical access to a backplane in the network element chassis, while the network element chassis is deployed; powering down backplane connectors for replacement while other backplane connectors remained powered; removing the powered down backplane connectors with a connector removal tool; inserting a new set of backplane connectors in place of the removed, powered down backplane connectors with a connector insertion tool; and powering up the new set of backplane connectors.

Abstract: Laser diode drivers include switching power supplies situated proximate one or more laser diode arrays so as to provide laser diode drive currents at frequencies of 200 kHz or more. The switching power supplies are generally buck/boost supplies that can provide well regulated outputs even when regulating remote power received from a power supply via a cables having inductances in the hundreds of nH. Multiple laser diode arrays can be driven with independently selectable powers. A drive current for a particular laser array can be controlled so as to reduce voltage drop at voltage control elements such as FETs, leading to increased efficiency, increased product life and decreased sense element failure.

Abstract: A quantum memory system includes a chalcogenide optical fiber link, a magnetic field generation unit and a pump laser. The chalcogenide optical fiber link includes a photon receiving end opposite a photon output end and is positioned within a magnetic field of the magnetic field generation unit when the magnetic field generation unit generates the magnetic field. The pump laser is optically coupled to the photon receiving end of the chalcogenide optical fiber link. The chalcogenide optical fiber link includes a core doped with a rare-earth element dopant. The rare-earth element dopant is configured to absorb a storage photon traversing the chalcogenide optical fiber link upon receipt of a first pump pulse output by the pump laser. Further, the rare-earth element dopant is configured to release the storage photon upon receipt of a second pump pulse output by the pump laser.

Abstract: An intra-cavity doubled OPS-laser has a laser-resonator including a birefringent filter (BRF) for coarse wavelength-selection, and an optically nonlinear (ONL) crystal arranged for type-II frequency-doubling and fine wavelength-selection. Laser-radiation circulates in the laser-resonator at one of a range of fundamental wavelengths dependent on the resonator length. The ONL crystal has a transmission peak-wavelength dependent on the crystal temperature. Reflection of circulating radiation from the BRF is monitored. The reflection is at a minimum when the ONL crystal transmission-peak wavelength is at the circulating radiation wavelength. The temperature of the ONL crystal is selectively varied to maintain the monitored reflection at about a minimum.

Abstract: A titanium-sapphire laser apparatus may include a continuous wave oscillation laser unit, an amplification oscillator, a pulsed laser unit, an error detector, an error controller, and an optical path length corrector. The amplification oscillator may include an optical resonator and a titanium-sapphire crystal that is provided in an optical path in the optical resonator. The error detector may be provided in an optical path of leak light of seed light from the optical resonator, and may detect an optical path length error between an optical path length in the optical resonator and a positive integer multiple of a wavelength of the seed light and output an optical path length error signal. The optical path length corrector may vary the optical path length in the optical resonator on a basis of a signal resulting from adding a correction value to the optical path error signal.

Abstract: Techniques for efficient alignment of a semiconductor laser in a Photonic Integrated Circuit (PIC) are disclosed. In some embodiments, a photonic integrated circuit (PIC) may include a semiconductor laser that includes a laser mating surface, and a substrate that includes a substrate mating surface. A shape of the laser mating surface and a shape of the substrate mating surface may be configured to align the semiconductor laser with the substrate in three dimensions.

Abstract: Provided is a semiconductor laser device having enhanced heat dissipation properties. A semiconductor laser device 10 comprises a stem 11, a cap 12 that is attached to an upper surface of the stem 11, a semiconductor laser element 13, and a power-feeding member 14 that is at least partially buried in the stem 11. The power-feeding member 14 comprises an element-side terminal 32 that is electrically connected to the semiconductor laser element 13, and an external terminal 33. The external terminal 33 of the power-feeding member 14 is exposed on a side surface or the upper surface of the stem 11, and an attaching surface 11b that is attached to a mounting object is provided in a lower surface of the stem 11.

Abstract: Disclosed is an optical sensor, including an external cavity laser configured to output sensing light and reference light; and a photodetector configured to detect a beating signal by an interference of the sensing light and the reference light output from the external cavity laser, in which the external cavity laser includes a reflecting filter including a sensing grating, to which a sensing object is attachable, and a reference grating, which is disposed on the same plane as that of the sensing grating, and outputs sensing light reflected from the sensing grating and reference light reflected from the reference grating. Accordingly, the optical sensor does not require a high-resolution spectroscope and has improved resolution and sensitivity.

Abstract: A surface emitting laser may include an isolation layer including a first center portion and a first plurality of outer portions extending from the first center portion, and a metal layer including a second center portion and a second plurality of outer portions extending from the second center portion. The metal layer may be formed on the isolation layer such that a first outer portion, of the second plurality of outer portions, is formed over one of the first plurality of outer portions. The surface emitting laser may include a passivation layer including a plurality of openings. An opening may be formed over the first outer portion. The surface emitting laser may include a plurality of oxidation trenches. An oxidation trench may be positioned at least partially between the first outer portion and a second outer portion of the second plurality of outer portions.

Abstract: A method for manufacturing a semiconductor light-emitting device includes: forming a plurality of guide grooves so as to be depressed from a surface of a semiconductor structure layer toward a semiconductor substrate and to align and extend along a direction perpendicular to an extending direction of a plurality of line electrodes; forming, in each of the plurality of guide grooves, a scribe groove so as to be depressed from a bottom surface of the guide groove toward the semiconductor substrate and to extend along an extending direction of the guide groove; and dividing a semiconductor wafer along the plurality of guide grooves. The guide groove and the scribe groove are formed to have end shapes in such a manner that inner walls thereof project toward each other in the extending direction of the scribe groove.

Abstract: A laser-diode device includes a substrate; at least one first cladding layer placed on the substrate; an active layer placed on the first cladding layer and arranged to emit a radiation; at least one second cladding layer placed on the active layer, said cladding layers being adapted to form a heterojunction; a first terminal facet and a second terminal facet placed transversally relative to the cladding layers and to the active layer; a periodic structure, placed in proximity to the second terminal facet and within the second cladding layer, and belonging to an optical cavity, wherein the first terminal facet represents the output mirror from which the radiation generated by the active layer exits, and the second terminal facet, integrated by the periodic structure, represents a second mirror having high reflectivity, so that the radiation produced by the active layer exits almost totally through the first mirror.

Abstract: A quantum cascade laser includes a substrate including first and second regions arranged along a first axis; a stacked semiconductor layer disposed in the second region, the stacked semiconductor layer having an end facet located on a boundary between the first and second regions, the stacked semiconductor layer including a core layer and a cladding layer that are exposed at the end facet thereof; and a distributed Bragg reflection structure disposed in the first region, the distributed Bragg reflection structure including a semiconductor wall and a covering semiconductor wall that covers the end facet of the stacked semiconductor layer. The semiconductor wall and the covering semiconductor wall are made of a single semiconductor material. The semiconductor wall has first and second side surfaces. The covering semiconductor wall has an end facet that is located away from the first and second side surfaces of the semiconductor wall.

Abstract: An ESD protection device includes a bare unitary body, and a first discharge electrode and a second discharge electrode that are disposed inside the bare unitary body. The first discharge electrode and the second discharge electrode are opposed to each other with a gap interposed therebetween. The bare unitary body includes a cavity in which the gap between the first discharge electrode and the second discharge electrode is located, and to which the first discharge electrode and the second discharge electrode are exposed. A first space of the cavity on a side closer to the first discharge electrode is smaller than a second space of the cavity on a side closer to the second discharge electrode.

Abstract: A spark plug for a gas-powered internal combustion engine, having a center conductor, an insulator surrounding the center conductor, a body surrounding the insulator, a center electrode connected in an electrically conductive manner to the center conductor, and at least one ground electrode that is connected in an electrically conductive manner to the body and forms a spark air gap with the center electrode. A shield that shields the spark air gap in the radial direction of the spark plug is located at the front end of the body. The shield includes multiple shield components that are attached to the front end of the body adjacent to one another in the circumferential direction of the spark plug.

Abstract: A container energy storage system is provided, including a container, a plurality of functional assemblies, and a splitting plate, wherein the splitting plate has a connecting port electrically connected to the functional assemblies. The container includes a hollow main body having an opening and two doors pivotally connected to the hollow main body. The functional assemblies are disposed in the hollow main body, and the splitting plate is disposed between the functional assemblies and the opening. When the doors are in a closed position, the doors cover the opening.

Abstract: Electrical enclosure including circuit breaker, exterior panels defining a volume, wall separating compartments defined in the volume, and cooling channel component. Cooling channel component includes first plate coupled to wall. First plate includes first end and a second opposite end coupled to wall, the first plate covering an opening defined in wall and having a first aperture defined therethrough, first aperture having a first shape and a first orientation. Cooling channel component also includes electrically conductive second plate coupled to first plate and having a first end coupled to first plate first end and a second opposite end coupled to first plate second end, the second plate having at least one second aperture defined therethrough, the second aperture having a second shape and a second orientation, where a hollow cavity is defined between the first and second plates, and where the first and second apertures are arranged in a non-overlapping configuration.

Abstract: A shutter interlock device for an electrical enclosure includes a shutter link defining a lock slot, an actuating member rotatably coupled to the electrical enclosure, and a sliding link. The sliding link includes a first end coupled to the actuating member, a second end opposite the first end, and a pin coupled to the second end, where a rotation of the actuating member causes the pin to selectively disengage the lock slot.

Abstract: A pliant tube is positioned in a duct thereby defining two compartments in the duct, one within the tube and the other between the tube and the duct. A pulling device, such as a pull tape or rope, is provided in each compartment and is adapted to be attached to a cable so that a cable can be pulled into each compartment of the duct.

Abstract: A weatherproof electrical box assembly may include a cover portion, a center portion and a bottom portion. The cover portion and bottom portion are configured to be integrated as a single piece. The cover portion is removably attached to one side of the center portion, and an adapter plate is removably secured to a recessed portion of the center portion. In one embodiment, the back wall of the bottom portion includes one or more bottom openings for receiving and attaching an electrical wire to an electrical component installed in the bottom portion. One advantage of securing the center portion onto the outer edges of the bottom portion, is that electrical components are thereby recessed in the bottom portion and not positioned adjacent the cover portion. As a result, electrical components may be further protected from any moisture accumulating on the inside cover area of the cover portion.

Abstract: An in-floor electrical fitting has a lower body that includes two half-bodies made of intumescent material. Each half-body includes a removable access wall that is also made of intumescent material and that is inserted into slots formed in the half-body. The removable access wall has at least one reduced-thickness section that can be broken off from the removable access wall to create a passageway through the removable access wall. During installation, the two access walls can be removed to allow an installer to a lay a conduit that will pass through the passageway through each access wall when the access walls are reinserted. An installer can pass power wires from one small compartment to another through the conduit while complying with code requirements calling for the separation of power and data cables.

Abstract: An electrical box includes a body, a cover that is movable relative to the body, and an electrical connection point that is mounted to the cover. The electrical connection point may be one or more of an electrical receptacle, a data jack, and/or the like. The cover may be attached to the body by a sliding hinge connection or a sliding pin connection that allows the cover to rotate relative to the body as well as translate relative to the body. An air pocket substantially filling a compartment in the cover is maintained during an opening or closing of the electrical box.

Abstract: A snap fitting has a trailing end adapted to be connected to flexible metallic conduit or metal clad cable, and a cylindrical leading end portion. The leading end portion is uniquely formed with a plurality of locking fingers and tensioning fingers adjacent to and on each side of each locking finger. The locking fingers spread radially axially outwardly from near the outboard end of the leading end portion toward the trailing end. The free ends of the fingers have exterior cam surfaces that engage the edge of the box opening when the fitting is inserted into the opening. This causes the locking fingers to flex radially inwardly during assembly of the fitting to the junction box. The snap fitting can be inserted into both sides of the opening of the junction box.

Abstract: A cable retainer assembly includes a base support device having an opening, and a clip device having a base plate and two side plates folded from the base plate for clamping a cable between the side plates, the side plates each include one or more grooves for forming a flap in each of the side plates and for engaging the flaps of the side plates into the opening of the base support device, and for attaching the clip device to the base support device. The side plates of the clip device each include a curved portion directed toward each other for forming a chamber between the curved portions of the side plates and for engaging with the cable.

Abstract: A portable lightning protection system including a multi-section conductive mast assembly including at least a base mast section and a top mast section; an air terminal attachable to the top mast section; and a base assembly attachable to the base mast section via a hinge assembly, wherein the hinge assembly may be configured to allow the base mast section to hinge relative to the base assembly. A catenary lightning protection system including at least two lightning protection systems, each lightning protection system may include a multi-section conductive mast assembly including at least a base mast section and a top mast section; an air terminal attachable to the top mast section; a base assembly attachable to the base mast section; and may further include a catenary wire connected between the at least two lightning protection systems.

Abstract: An electric field control device for a high voltage cable includes a stress cone and a field grading adapter, wherein the stress cone and the field grading adapter are chemically bonded by vulcanization. An electric installation includes a power cable and the electric field control device. A method for producing the electric field control device is also disclosed.

Abstract: A method and circuit for a power supply unit (PSU) suitable for use in an information handling system to detect an inrush current reaching an inrush current threshold, to fully turning off, by a control circuit of the PSU, a series transistor to block the inrush current, to transfer, while the series transistor is fully turned off, magnetic energy stored in a boost choke to a bulk capacitor, and to fully turn on, by the control circuit of the PSU, the series transistor again immediately after the series transistor was in a fully turned off state, wherein the fully turning on occurs after the magnetic energy stored in the boost choke has been transferred to the bulk capacitor.

Abstract: An electrical wiring device including: a housing, a plurality of line terminals, feed-through load terminals and receptacle load terminals electrically connected to a pivotable contact structure or to a fixed contact structure comprising a conductive member having at least one contact positioned thereon, wherein in response to a make-force each pivotable contact structure is configured to perform a first pivotable movement to electrically connect each of the contacts on each pivotable contact structure to one of the contacts on a different one of the fixed contact structures in the reset state, thereby electrically connecting the terminals in the reset state; a circuit interrupting assembly including at least one breaking element being configured to perform a first linear movement in a first direction in response to a break-force in order to cause each pivotable contact structure to perform a second pivotable movement in a direction opposite the first pivotable movement to decouple each of the contacts on eac

Abstract: An apparatus includes a current sense resistor configured to receive a supply current for one or more devices. The apparatus also includes a current sense amplifier configured to amplify a voltage across the current sense resistor. The apparatus further includes a comparator configured to compare the amplified voltage from the current sense amplifier to a reference voltage. In addition, the apparatus includes an octal driver configured to receive the supply current from the current sense resistor and to control one or more device outputs associated with the one or more devices. The apparatus may also include an optocoupler configured to receive an output from the comparator and, based on the output, control an output enable pin of the octal driver. There could be multiple resistors, amplifiers, comparators, drivers, and optocouplers arranged in multiple circuit branches, which could be configured to control multiple device outputs associated with different groups of devices.

Abstract: A battery protective circuit includes a battery controller, a charging control transistor, and a protection circuit. The battery controller controls charging of a battery according to a charging control voltage output through a charging control terminal. The a charging control transistor electrically connects the battery to a charger or to electrically disconnect the battery from the charger. The protection circuit includes a voltage sensing terminal electrically connected to a load, an input terminal electrically connected to the charging control terminal, and an output terminal electrically connected to a gate terminal of the charging control transistor. The protection circuit outputs a signal through the output terminal to turn off the charging control transistor, regardless of the charging control voltage of the input terminal, when a voltage equal to or greater than a threshold voltage is sensed at the voltage sensing terminal.

Abstract: When a temperature is less than a first threshold, a protection circuit unit executes a normal operation by a pulse width modulation. When the temperature is greater than or equal to the first threshold and is less than a second threshold, the protection circuit unit executes a first heat dissipation suppressing operation that suppresses a self-heating of a switching element. When the temperature is greater than or equal to the second threshold, the protection circuit unit executes a full off operation that terminates the switching element. When the temperature is decreased to be less than the first threshold and to be greater than or equal to a third threshold after the temperature becomes greater than or equal to the second threshold, the protection circuit unit executes a second heat dissipation suppressing operation that suppresses a heat dissipated due to an energization of the switching element.

Abstract: A fault current limiter may include a current limiting leg to transmit a first current and a control leg in parallel with the current limiting leg, the control leg to transmit a second current. The control leg may include a plurality of solid state switches arranged in electrical series with one another; a plurality of current monitors arranged in electrical series with the plurality of solid state switches; and at least one triggering circuit, wherein the plurality of current monitors are electrically coupled to the at least one triggering circuit, and wherein the at least one triggering circuit is optically coupled to the plurality of solid state switches.

Abstract: A surge protection device includes: a pair of terminal fittings to be connected to a pair of power supply terminals of a. field device together with a power supply cable; a circuit board on which a surge protection element is mounted, the surge protection element including two electrodes connected to the pair of terminal fittings and a ground electrode configured to cause a surge current to flow to a ground when a surge voltage is applied between the two electrodes; an earth wiring cable connected to the ground electrode; and a main body that houses the circuit board, the main body being configured such that the pair of terminal fittings and the earth wiring cable protrude from an inside of the main body to an outside.

Abstract: This electrostatic protection circuit enables a trigger voltage to be set arbitrarily and enables a high hold voltage to be set, without providing an RC timer having a large circuit area. This electrostatic protection circuit is connected to a first terminal via a first node and is connected to a second terminal via a second node. The electrostatic protection circuit is provided with a plurality of circuit blocks that are connected in series between the first node and the second node, and at least one circuit block out of the plurality of circuit blocks includes a zener diode for setting a trigger voltage. The electrostatic protection circuit enters a conduction state when the potential of the first node becomes higher than the potential of the second node and the voltage between both ends of the circuit block including the zener diode reaches the breakdown voltage of the zener diode.

Abstract: This electrostatic protection circuit enables a high hold voltage to be set, and acts to accurately prevent breakdown of a protected circuit immediately after power on, and to prevent breakdown or deterioration of a protection device during prolonged normal operation, without connecting a resistance element in parallel to a plurality of circuit blocks connected in series. This electrostatic protection circuit is provided with a plurality of circuit blocks connected in series between a first node and a second node, at least one circuit block out of the plurality of circuit blocks including a thyristor having an anode connected to one end of the at least one circuit block and a cathode connected to the other end of the at least one circuit block.

Abstract: A circuit design for efficiently transferring significant levels of electrical power with non-inductive circuit elements. Power is transferred using synchronously-switched capacitive elements in such a way that both discharge from the power source and charge transferred to a load (and/or back to the power supply) are supplied as low duration, high-intensity current pulses. The synchronous power transfer alternates between connecting capacitive charge storage elements in parallel and in series so that both step-up and step-down topologies may be readily realized.

Abstract: A load driving device includes a switching element, a detector, a determination portion, a controller, and a threshold set portion. The switching element is arranged between a voltage source and a load, or between the load and a ground. The switching element is turned on to supply electric power from the voltage source to the load. The detector detects a current flowing in the switching element. The determination portion compares a detection value of the detector and a threshold value, and determines whether an overcurrent flows in the switching element. The controller controls the switching element based on a determination result of the determination portion. The threshold set portion sets the threshold value to a higher value as voltage of the voltage source is higher. As such, responsiveness of the load driving device is improved and the switching element is protected when a short-circuiting occurs.

Abstract: Electrical energy produced by an energy harvester is stored on a temporary basis in an interim energy storage module before transferring it to a load. The current fed to the load is controlled so that a voltage limit of, for example, a capacitor in the interim storage module is not reached. By at least partially synchronizing the current consumed with the power produced, the capacity of the interim energy storage can be minimized, while still beneficially reducing fluctuations in the current. Current consumed may be determined by the use of a voltage to current look-up table, so that minimal communication overhead between the load and the power source is needed.

Abstract: A serial acquisition of multiple power sources via one or more multiplexers which is circulated in many corridors of a multi-port system with a resonant engine. A controller manages multiplexer/switches connecting a first plurality of DC power sources and an auxiliary DC power source to a circulator. A multiplexer/switch revolves each source of power to inverters for DC-AC conversion. Reciprocity of power sharing and management of signal routing between input power sources can be performed to maintain discrete operation between the input/output power sources and individual power inverters for precise load power delivery. Regenerative power from a motor load can be directed to “recharge” an input power source. The resonant engine applied to each power source provides a constant conduit of energy during off-operation/cycles.

Abstract: An appliance unit (3) is for electrical connection in series to a control unit (1) and to a power supply via the control unit (1). The appliance unit (3) comprises an appliance module comprising at least one controllable light generating module (23) and/or at least one controllable auxiliary module (25) for performing functionality other than light generating, and a control module (27) for negotiating a power mode for the appliance unit (3) with the control unit (1). The appliance module is controlled based on the power mode. A bypass module (21) is able to pass current through the appliance unit (3), such that the bypass module (21) is configured to pass a current to enable the control unit (1) to be powered separately from any current passed by the at least one controllable light generating module (23) and the at least one controllable auxiliary module (25).

Abstract: A method for dynamic state estimation (DSE) in a power distribution system (PDS) determines a new state of the PDS from a current state of the PDS via an indirect state transition model defining a transition of the current state of the PDS to the new state of the PDS through a transition of a current power injection to a new power injection on each bus of the PDS. The method measures one or combination of power flows, power injections, voltage magnitudes and phase angles on the measuring buses in the PDS and updates the new state of the PDS based on corresponding differences between one or combination of the estimated power flows, the estimated power injections, the estimated voltage magnitudes and the estimated phase angles with the measured power flows, the measured power injections, the measured voltage magnitudes and the measured phase angles.

Abstract: The present invention relates to a method for operating a wind power facility in order to provide reactive power support to a power grid, the method comprising the step of increasing an amount of reactive power injected into the power grid, decreasing an amount of active power injected into the power grid by a certain amount, and dissipating and/or storing essentially said certain amount of active power in power dissipation and/or power storage means. The wind power facility may comprise a wind turbine or a wind power plant.

Abstract: A computer-implemented method is provided for managing a plurality of micro grids in an energy system. The method includes collecting and maintaining, in a central database, configuration information and state information for the plurality of micro grids, by a processor-based dynamic operation engine. The method further includes identifying failures in any of the plurality of micro grids and generating updated configuration information and updated state information relating to the failures, based on data analytics and diagnostic polling applied to the configuration information and the state information, by a processor-based micro grid diagnostic engine.

Abstract: An illustrative example electrical power generating system includes a fuel cell power plant that is configured to generate electrical power. The fuel cell power plant includes a cell stack assembly including a plurality of fuel cells that are configured to generate electrical power based on a chemical reaction. A coolant network is configured to carry fluid toward the cell stack assembly where fluid in the coolant network can become heated by absorbing heat from the fuel cell power plant. The coolant network includes a thermal hydraulic engine that is configured to generate electrical power. The coolant network is configured to carry the heated fluid to the thermal hydraulic engine where the heated fluid can be used for generating electrical power. The coolant network is configured to carry a reduced temperature fluid from the thermal hydraulic engine back toward the cell stack assembly.

Abstract: Methods and apparatus are disclosed for wirelessly receiving power. In one aspect, an apparatus for wireless receiving power is provided. The apparatus comprises a receive circuit configured to receive wireless power via a magnetic field sufficient to power or charge a load. The apparatus further comprises a synchronous rectifier electrically coupled to the receive circuit, the synchronous rectifier comprising a switch and configured to rectify an alternating current (AC) signal, generated in the receive circuit, to a direct current (DC) signal for supplying power to the load. The apparatus further comprises a controller configured to, during a period when an input voltage level of the synchronous rectifier is higher than an output voltage level of the synchronous rectifier, adjust a conduction angle of the switch at a first frequency substantially in phase with a frequency of the AC signal to adjust an output power to the load.

Abstract: A method for charging a lithium ion battery includes the steps of: 1) determining a maximum charging current I0 and a lowest anode potential ? of the lithium ion battery at which no lithium precipitation occurs; 2) charging the lithium ion battery at a constant current of I1 which is greater than I0 for a charging time t1; 3) discharging the lithium ion battery at a constant current of I2 which is less than I0 for a discharging time t2, 5?t1/t2?50; 4) repeating steps 2) and 3) until a cutoff voltage of the lithium ion battery reaches V0 and standing the lithium ion battery for a standing time t3; and 5) charging the lithium ion battery at a constant current of I0 until the cutoff voltage of the lithium ion battery reaches V0 and charging the lithium ion battery to a cutoff current of I3 at a constant voltage.