Abstract: A fiber optic voltage conditioner, and method therefor, generally relate to voltage conditioning. In such a fiber optic voltage conditioner, there is a laser, and an optical circulator is coupled to receive a light signal from the laser. A controller is coupled to the laser and is configured to generate first control information for wavelength-drift control of the laser. A data acquisition module is coupled to the controller and is configured to generate second control information for the controller for adjustment of the first control information. A photodetector is coupled to the optical circulator to receive a returned optical signal and is coupled to the data acquisition module to provide an analog output signal thereto. The photodetector is configured to generate the analog output signal responsive to the returned optical signal. The data acquisition module is configured to generate the second control information using the analog output signal.

Abstract: A semiconductor optical element includes a semiconductor layer portion that includes an optical waveguide layer. The semiconductor layer portion contains a first impurity having a function of suppressing atomic vacancy diffusion and a second impurity having a function of promoting atomic vacancy diffusion, between a topmost surface of the semiconductor layer portion and the optical waveguide layer. The semiconductor layer portion includes two or more regions that extend in a deposition direction. At least one of the two or more regions contains both the first impurity and the second impurity. The two or more regions have different degrees of disordering in the optical waveguide layer achieved through atomic vacancy diffusion and different band gap energies of the optical waveguide layer.

Abstract: An embodiment circuit includes a diode having a first terminal coupled to a first reference voltage; a first controllable switch coupled between a second terminal of the diode and a second reference voltage; and a capacitive element having a first terminal coupled to the first reference voltage and a second terminal controllably coupled to the second terminal of the diode.

Abstract: A semiconductor vertical light source includes an upper mirror and a lower mirror. An active region is between the upper and lower mirror. The light source includes an inner mode confinement region and outer current blocking region. The outer current blocking region includes a common epitaxial layer that includes an epitaxially regrown interface which is between the active region and upper mirror, and a conducting channel including acceptors is in the inner mode confinement region. The current blocking region includes a first impurity doped region with donors between the epitaxially regrown interface and active region, and a second impurity doped region with acceptors is between the first doped region and lower mirror. The outer current blocking region provides a PNPN current blocking region that includes the upper mirror or a p-type layer, first doped region, second doped region, and lower mirror or an n-type layer.

Abstract: A surface-emitting semiconductor laser includes a first semiconductor multilayer film reflector, an active region, a second semiconductor multilayer film reflector, and a current confinement layer including an oxidized region formed by selective oxidation. The current confinement layer includes a first semiconductor layer having a relatively high Al content, a second semiconductor layer that is adjacent to the first semiconductor layer on an active-region side of the first semiconductor layer and has a lower Al content than the first semiconductor layer, and a composition-gradient layer adjacent to the first semiconductor layer on a side of the first semiconductor layer which is opposite to the active-region side. A portion of the composition-gradient layer which faces the first semiconductor layer has a lower Al content than the first semiconductor layer.

Abstract: A semiconductor laser, a laser assembly and a method of making a semiconductor laser are disclosed. In an embodiment the surface-emitting semiconductor laser includes a carrier having a carrier main side mechanically carrying a semiconductor laser; a first Bragg mirror and a second Bragg mirror so that the second Bragg mirror is further away from the carrier than the first Bragg mirror; a semiconductor layer sequence between the first and the second Bragg mirrors having at least one active zone for generating laser radiation; a metal mirror arranged directly on a side of the first Bragg mirror facing the carrier for reflecting laser radiation generated during operation of the semiconductor laser; a bonding agent layer located between the carrier and the semiconductor layer sequence; a resonator oriented perpendicular to the carrier main side; and an electrically insulating passivation layer located in the metal mirror.

Abstract: A mode-controlled laser system includes an active region to generate optical energy in response to an electric signal. The system also includes a mirror to resonate the optical energy in an optical cavity. The system also includes a HCG mode control reflector arranged in the optical cavity to control the resonated optical energy into a substantially non-Gaussian intensity profile. The resonated optical energy can be emitted as an optical signal having the substantially non-Gaussian intensity profile.

Abstract: An interband cascade (IC) light emitting device comprising a plurality of interband cascade stages, wherein at least one of the IC stages is constructed to have an electron injector made of one or more QWs, a type-I quantum well (QW) active region, a barrier layer positioned between the active region and the electron injector, a hole injector made of one or more QWs, and a barrier layer positioned between the active region and the hole injector. In at least one embodiment, a type II heterointerface layer is between the electron injector and an adjacent hole injector. The well layer of the type-I QW active region has compressive strain, while the barrier layers which flank the type-I QW active region comprise tensile strain layers. In certain embodiments, the electron injector and the hole injector comprise tensile strained layers.

Abstract: An optical amplifying apparatus and a method to control the same are disclosed. The apparatus includes a semiconductor device that integrates a variable optical attenuator (VOA) with a semiconductor optical amplifier (SOA). The VOA evaluates the optical power of an incident beam from a photocurrent generated therein. The attenuation of the VOA and the optical gain by the SOA are optionally determined based on the detected input power.

Abstract: A corona igniter assembly 20 comprises an ignition coil assembly 22, a firing end assembly 24, and a metal tube 26 connecting the ignition coil assembly 22 to the firing end assembly 24. A rubber boot 28 is disposed in the metal tube 26 and compressed symmetrically between a coil output member 30 of the ignition coil assembly 22 and an insulator 42 of the firing end assembly 24. Thus, the rubber boot 28 fills any air gaps and provides a hermetic seal between the ignition coil assembly 22 and the firing end assembly 24 to prevent unwanted corona discharge from forming from those air gaps.

Abstract: A spark plug having a tip formed of an alloy containing Pt. The tip contains not less than 6 mass % of Rh, at least one element selected from an R group consisting of Rh, Re, Ir, Ru, W, Mo, and Nb, not less than 5 mass % of Ni, and at least one element selected from an N group consisting of Ni, Co, Fe, and Cu. The tip contains Rh most among the elements of the R group, and contains Ni most among the elements of the N group. The total of contents of Pt, Rh, and Ni is not less than 91 mass %, and the total of contents of Pt, the R group, and the N group is not less than 95 mass %. A value obtained by dividing the content of the R group by the content of the N group is not less than 0.7 and not greater than 8.

Abstract: A power line communication apparatus includes a power plug configured to connect to a power line, and a power plug receiver configured to connect to the power plug. The power line communication apparatus also includes a power line communicator configured to receive a signal transmitted through the power line, and a power supplier configured to generate power based on power received from the power plug and supply the generated power to the power line communication apparatus. The power line communication apparatus further includes a power board on which the power plug receiver is mounted, and a heat radiator that connects to the power line communicator and radiates heat generated from the power line communicator, wherein a portion of the heat radiator overlaps a portion of the power board when viewed perpendicular to the power board, and the portion of the power board does not include the power plug receiver.

Abstract: Examples described herein relate to circuit breaker reset for power distribution units (PDUs). In one example, an apparatus to reset a circuit breaker of a PDU includes a bracket to enclose a portion of a rack rail, where one end of the bracket is coupled to a surface of the PDU including the circuit breaker. The apparatus also includes an elongated member disposed within the bracket, the elongated member includes a distal end to make contact with the circuit breaker, when force is applied to a proximal end of the elongated member, to reset the circuit breaker.

Abstract: A stripping plier includes a first plier handle, a second plier handle, a blade assembly, a spring and a supportive blocking member. The blade assembly is attached to two opposite side edges of the first plier handle and the second plier handle correspondingly; two ends of the spring are secured onto the first plier handle and the second plier handle respectively; the supportive blocking member is arranged on one side edge of the blade assembly, one end of the supportive blocking member is attached onto the first plier handle and another end thereof extends to the second plier handle. The supportive blocking member is able to provide supporting force during the cutting of the blade assembly in order to prevent any positional shifts of the stripping plier from occurring.

Abstract: A handheld circular sawing device for severing armored cable includes a housing. A first plate is coupled to and extends coplanarly with a first side of the housing. A second plate is positioned substantially perpendicular to the first plate along a lower edge of the first plate. The second plate is hingedly coupled by a first end to the first plate proximate to a rear of the housing. A second end of the second plate is positioned proximate to a front of the housing to define a channel. A power module and a motor are coupled to the housing. The motor is operationally coupled to the power module. A blade that is coupled to a shaft of the motor protrudes into the channel. The motor is positioned to rotate the blade coincident with the shaft to longitudinally cut a section of a tubular substrate that is positioned in the channel.

Abstract: A cable stripping tool for preparing a coaxial cable for insertion into a coaxial cable connector includes a receptacle, a cartridge, and a biasing member. The receptacle defines an opening for receiving an end of the coaxial cable, and the opening defines an axis along which an elongate of the coaxial cable extends into the receptacle. The cartridge is disposed in the receptacle and is slidable in a back-and-forth direction substantially orthogonal to the axis of the opening. The cartridge holds at least one cutting blade, which has a blade edge extending substantially orthogonal to the axis of the opening. The biasing member is configured to bias the cartridge toward a first stop surface of the receptacle disposed at an opposite side of the opening relative to the cartridge.

Abstract: A first opposing surface inclination angle of a protruding first solid insulating material of a first high-voltage device is smaller than a second opposing surface inclination angle of a dented second solid insulating material of a second high-voltage device. A hollow truncated-cone flexible insulating material of which the thickness before insertion between the first high-voltage device and the second high-voltage device is the same at every part and the elasticity modulus gradually increases from a small-diameter side toward a large-diameter side, or a hollow truncated-cone flexible insulating material of which the thickness before insertion gradually increases from a small-diameter side toward a large-diameter side and the elasticity modulus is the same at every part, is compressed and sandwiched between the first solid insulating material and the second solid insulating material.

Abstract: Hybrid cable tray comprising a first part (13) constituting one piece having a uniform thickness. The first part (13) forming at least a first support surface (52) of a first accommodation (53) for the plurality of cables (54). The first part (51) having a plurality of first through holes (15) formed by a first plurality of edges (20) in the first part (13). The cable tray (10) having two parallel extending side bars (11, 12) connected to each other by said first part (13). The said side bars comprise an inner side (111, 121) connected to the said first part (13) and provided with at least one closed top side (113, 123) and one outer side (112, 122) where the inner side and the outer side have about the same width (W). The side bars have an open bottom side (55, 56). The invention also covers a method of manufacturing such a hybrid cable tray (10).

Abstract: A protective component for a power cable of an industrial electro-magnetic lifting device includes a top portion and a bottom portion. The protective component is formed with an opening, which extends through the top and bottom portion to enable the protective component to be disposed around a power cable of a lifting magnet. The bottom portion includes an inner diameter, which enables the top portion of a second subsequent protective component disposed around the power cable to nest or rest within the bottom portion. A plurality of protective components can be disposed around the power cable so that each protective component bottom opening mates with the top portion of a preceding protective component and the top portion mates with the bottom opening of a subsequent protective component to protect the power cable.

Abstract: A base for an electrical outlet having a front surface and a back surface, at least one opening extending there through, the at least one opening having a size large enough to receive a socket face, at least one mounting screw aperture opening extending through the base, the mounting screw aperture having a first portion sized large enough to receive a mounting screw head, and at least a second portion extending into the first portion and through the base, the second portion sized large enough to allow a mounting screw shaft to extend through the base but small enough to disallow the mounting screw head from passing through the base, at least one keyhole cover removably secured within the first portion, and wherein the base is configured with the second portion of the mounting screw aperture accessible after the base is installed on the electrical outlet.

Abstract: An electrical box support is provided for coupling to the side wall of an electrical box to support the electrical box in an opening formed in a hollow core building block. The support has a flange at the front edge and tab at a front edge that clips onto the side wall of the electrical box. A spring member extends from a rear side edge and curls toward the front edge. The spring member has an end that is directed toward the front edge and spaced from the flange a distance to contact the inner surface of the block while the flange contacts the outer surface of the block. The tab at the front edge of the support has a hook for engaging an inner edge of the electrical box to couple the support to the electrical box and to prevent sliding of the support on the electrical box.

Abstract: An epoxy sealant confined around a transition seal body system for a down hole electric cable transition from a protected cable to separate conductors of a three-phase electrical service provides a vapor and pressure seal, preventing premature failure from temperature and pressure changes in the wellbore. The use of epoxy to completely surround the transition seal body within the penetrator mandrel permits field installation of continuous electrical conductors from a wellbore through a pressure sealing wellhead to the surface.

Abstract: An apparatus comprising a clamp. The clamp can include a plate. The plate can include a mounting opening to accommodate a shaft of a bolt module there-through and to stop an end of the bolt module from passing through, and cable tie openings. The clamp can also include a tube projecting from the plate, where an opening in the tube is coaxial with the mounting opening. The clamp can also include a non-metal curled coupling member sized to wrap around a portion of a cable and a non-metal coupling spacer member having a base portion and spacing arms projecting from the base portion. Ends of the spacing arms can be configured to contact the curled coupling member and the base portion has an opening coaxial with the mounting opening and the opening in the tube. A clamp and cable assembly and methods of manufacturing the clamp and assembling the clamp and the cable are also disclosed.

Abstract: Fault interrupting devices and methods for controlling the same are disclosed. The fault interrupting devices may include a switch on an electrical power line and a controller configured to operate the switch. The methods for controlling fault interrupting devices may include gathering data, determining from the data that a fault has occurred, opening the fault interrupting device to interrupt the fault, analyzing the data, and determining whether the fault interrupting device can be reclosed based at least partially on the analysis of the data.

Abstract: An electrostatic protection circuit includes a trigger circuit that is connected between a first power line and a second power line. The trigger circuit is configured to output a trigger signal in response to a voltage fluctuation between the first and second power lines. A shunt element has a main current path between the first power line and the second power line and is controllable to be on and off using the trigger signal. A control circuit is configured to supply a control signal to turn off the shunt element when a current value of the main current path of the shunt element exceeds a predetermined threshold value.

Abstract: A linear electromagnetic device, such as an inductor, transformer or the similar device, may include a core in which a magnetic flux is generable. The device may also include an opening through the core. The device may additionally include a primary conductor received in the opening and extending through the core. The primary conductor may include a substantially square or rectangular cross-section. An electrical current flowing through the primary conductor generates a magnetic field about the primary conductor, wherein substantially the entire magnetic field is absorbed by the core to generate the magnetic flux in the core.

Abstract: A method of and apparatus for protecting a MEMS switch is provided. The method and apparatus improve the integrity of MEMS switches by reducing their vulnerability to current flow through them during switching of the MEMS switch between on and off or vice versa. The protection circuit provides for a parallel path, known as a shunt, around the MEMS component. However, components within the shunt circuit can themselves be removed from the shunt when they are not required. This improves the electrical performance of the shunt when the switch is supposed to be in an off state.

Abstract: The present invention relates to a ground fault protection circuit and a ground fault circuit interrupter. A ground fault protection circuit may include a power supply circuit, a ground fault detection circuit, a signal amplifying and shaping circuit, a microcontroller control circuit, a power supply detection and indicator circuit, a tripping mechanism control circuit, and a reverse grounding detection and execution circuit. A ground fault circuit interrupter may comprise an interrupter body with a ground fault protection circuit in the interrupter body. The practice of the present disclosure may address installation safety risks of conventional ground fault circuit interrupters and arc fault circuit interrupter and improve the safety of ground fault circuit interrupters.

Abstract: The invention relates to a DC power distribution system for distributing DC power to one or several electrical devices. The system comprises an electrical device (2) for receiving DC power via an electrical conductor (4) from a power supply device (3) with a power supply control unit (5) and for transmitting a signal to the power supply control unit for requesting a lower power or a higher power. The power supply device is operable in a high power mode and in a low power mode, wherein the power supply control unit controls the power mode of the power supply device depending on the received signal. This allows adapting the power supply to the power, which is actually really needed in the DC power distribution system, in a technically relatively simple way. Particularly standby situations can be handled more efficiently.

Abstract: A bidirectional AC-to-DC and DC-to-AC circuit includes a first inductor-capacitor (LC) circuit connected to an AC power source, a transistor synchronized with the AC power source signal, a second LC circuit electrically connected to the synchronized transistor and the first inductor-capacitor circuit, a high-frequency switching transistor electrically connected to the second inductor-capacitor circuit and a direct current (DC) load, and a controller connected to the high-frequency switching transistor. The controller identifies an error between a measured DC output signal and a predetermined DC output signal that is applied to the DC load, and adjusts a duty cycle of a pulse width modulation (PWM) switching signal for the high-frequency transistor to reduce the identified error.

Abstract: Diffraction of a noise may be reduced in an inexpensive manner without reducing power generation efficiency. A power generation control apparatus (10) includes a plurality of combinations of DC input terminals (101) and (102) for inputting DC power and a noise filter (11) connected to the DC input terminals (101) and (102), wherein each of the plurality of combinations has a different extreme value of frequency characteristics of the noise filter (11).

Abstract: Aspects of the subject technology relate to a demand response device that is configured to receive comparison report information from a notification system, wherein the notification system is configured to execute steps including receiving at least one temperature report for each of a plurality of demand response devices, and identifying two or more demand response devices that share a common geographic location. In some aspects, a notification system of the subject technology can be further configured for generating a comparison report, wherein the comparison report is based on the ambient temperature information and the geolocation data for at least two of the plurality of demand response devices.

Abstract: An electrical system having a plurality of devices is supplied with power by a common power supply line. One of the devices has a circuit that slows or delays device startup or activation in response to a signal indicative of power demand, draw or use by another of the plurality of devices supplied with power by the common power supply line.

Abstract: A unified power flow controller for a double-circuit transmission line comprises at least one parallel-connection transformer, three current converters, at least two series-connection transformers, a parallel-connection side switching circuit, a series-connection side switching circuit and a direct current common bus. The series-connection transformers connected with at least one group of by-pass switches in parallel. The three current converters connected to each loop line in series after being connected with at least one series-connection transformer through the series-connection side switching circuit. The three current converters connected to an alternating current system after connected with at least one parallel-connection transformer through a parallel-connection side switching circuit starting circuit. The three current converters are connected to the direct current common bus through a transfer switch.

Abstract: Provided are an emergency power supply method for a container terminal and a container terminal, which supply emergency electric power by using a cargo handling machine as a power source in an emergency situation due to electric outage of the container terminal, or the like. In an emergency where an incoming panel (2) of the container terminal (1) cannot supply electric power, yard cranes (11a) to (11c) (cargo handling machines) configured to operate in the container terminal (1) are used as power sources, in which one (the yard crane (11a)) of the plurality of yard cranes (11a) to (11c) (cargo handling machines) is used as a reference power source, and power conditioning units are included which configured to match phases of electric powers of the remaining yard cranes (11b) and (11c) to a phase of electric power of the reference power source, such that electric power is supplied from the plurality of yard cranes (11a) to (11c) to the incoming panel (2).

Abstract: A method and apparatus for controlling power production in a distribution grid, wherein a technical result consists in increasing the efficiency of responding to an incoming grid state by using a database storing previous grid states and solutions for the previous grid states when solving an optimization problem, where a set of grid parameters is initially obtained to determine the incoming grid state, the incoming grid state is then compared to the previous grid states stored in the database, and if at least one previous grid state similar to the incoming grid state exists in the database, its solution is selected as a solution for the incoming grid state, and the indication of the amount of power to be produced, which is represented by the selected solution for the incoming grid state, is sent to power producers to provide a desired power level for power consumers.

Abstract: An operation control apparatus includes a criterion calculator that obtains an operation criterion for the power converter, based on the voltage detected by the above voltage detector on the side of the alternating-current power system, a direct-current voltage detector that detects a direct-current output voltage of the solar battery, and an operation determination device that compares the direct-current output voltage detected by the direct-current voltage detector with the operation criterion obtained by the criterion calculator, and supplies the power converter with an operation command if the direct-current output voltage is greater than the operation criterion.

Abstract: The disclosure relates to an inverter with at least two DC inputs, which are coupled to a common DC link, which is connected to an inverter bridge. At least one of the DC inputs is coupled to an additional DC link. The disclosure also relates to a PV system comprising such an inverter and to a method for controlling such an inverter of a PV system, wherein a power flow from at least one of the DC inputs is directed into the common DC link and/or into the additional DC link on the basis of suitably coordinated control of the DC-DC converter and of an additional DC-DC converter allocated to the additional DC link.

Abstract: A power generation system (200) comprises a photovoltaic device (201) and a voltage source (202). The voltage source (202) is arranged to raise the bias voltage across the photovoltaic device (201), thereby increasing the power output of the power generation system (200).

Abstract: An integrated resistive load bank management system (500) uses a load bank (510) to control a flow of electrical energy to an electrically operated system (520). The load bank management system uses a resistive load bank to dissipate power from a generator set (505). The load bank management system can rapidly switch an electrical connection between a load bank and the generator set and the electrically operated system and the generator set. The load bank management system can provide an instantaneous increase in power to the electrically operated system and provide a short recovery time between power pulses provided to the electrically operated system.

Abstract: A method for the closed-loop control of a voltage in a distribution network that supplies nodes with voltage via mains power lines. A node, which recognizes that the local voltage of the distribution network present at the node lies above or below a permissible supply voltage range, switches from slave mode to master mode and in the master mode regulates the local voltage that is present, by drawing or supplying reactive power in order to reach the permissible supply voltage range. The node then indicates this to other nodes of the distribution network that are in slave mode by modulating an indication signal pattern onto the reactive power being drawn or supplied by the node. The signal pattern has a signal parameter which is proportional to the amplitude of the reactive power that is drawn or supplied by the node.

Abstract: An intelligent electrical power network control and/or protection device comprises at least one power supply connection for connecting the device to a main power source and an auxiliary power source and at least one unit configured to monitor main power, the unit being configured to activate a signal indicating lack of main power in response to lack of main power. The device further comprises at least one unit configured to provide a state control operation for changing an operating state of at least one unit of the device or an operating state of at least one unit to be connected to the device from an operative mode t a power saving mode in response to the activated signal indicating the detected lack of main power.

Abstract: A load balancing circuit comprising a first power source, a first field effect transistor (FET) device having a drain terminal connected to the first power source and a source terminal connected to a first node, a first resistor connected to the first node and a second node, a load connected to the second node, a second FET device having a drain terminal connected to the first node and a source terminal connected to the second node, a third FET device having a collector terminal connected to a gate terminal of the first FET device and an emitter terminal connected to the second node, and a second resistor connected to a base terminal of the third FET device and the first node.

Abstract: A method for converting alternating current (AC) power to direct current (DC) power in a non-isolated power converter includes receiving a three-phase power supply, transforming the three phase power supply into six voltage phases, half-wave rectifying the AC current, applying a power factor correction to achieve DC power, and outputting a DC power signal. The three-phase power supply has an AC current. The six voltage phase is transformed at a secondary side of a three-phase distribution transformer, which includes a center tap located at the secondary side of the three-phase distribution transformer and one or more AC wire conductors. The AC wire conductors carry the transformed power supply. The half-wave rectification occurs at the secondary side of the three-phase distribution transformer. An arrangement of rectifier diodes on the AC wire conductors accomplishes the half-wave rectification. The output DC power signal has an output voltage at a DC output.

Abstract: An object identification system includes a guided surface waveguide probe that produces a guided surface wave; and an object identification tag having a receive structure and a tag circuit, the tag circuit coupled to the receive structure and electrically powered as a load on the probe by conversion of the guided surface wave to electrical current at the receive structure, the tag circuit configured to emit a return signal containing a tag identifier when electrically powered by presence of the guided surface wave.

Abstract: Disclosed are various embodiments for frequency-division multiplexing for wireless power providers using guided surface waveguide probes to transmit power. Guided surface waveguide probes may transmit power on multiple frequencies with potentially overlapping service areas. Frequency-agile wireless power receivers may tune to one or more frequencies. Cost, availability, and/or other information may be provided to the wireless power receivers. Power usage may be reported by the wireless power receivers to power providers.

Abstract: A reconfigurable multi-battery pack system for inclusion in a hand held device for more efficiently energizing battery powered operation of both a buck DC-DC converter and a boost DC-DC converter included in the device. Also disclosed is a power management circuit that autonomously: 1. connects the batteries in parallel during battery recharging; and 2. connects at least two (2) of the batteries in series when the batteries are not being recharged and are energizing operation of the DC-DC converters.

Abstract: A device for balancing an energy accumulator, especially an energy accumulator in an on-board power supply system of a motor vehicle, is provided. The energy accumulator is formed by a cell assembly of a serial connection of a plurality of cell groups, respective balancing circuits being connected to voltage connections of respective cell groups and comprising a discharge resistor. The discharge resistor of a respective balancing circuit has a temperature-dependent resistance characteristic, and the discharge resistors of at least some of the balancing circuits are thermally intercoupled.

Abstract: A battery controller 10 outputs a voltage sampling and holding command signal to an integrated circuit CCn located at an upstream end of cascade connection of integrated circuits CC1-CCn such that integrated circuits CC1-CCn sample and hold output voltages of unit cells 1 grouped into battery modules M1-Mn. The battery controller 10, after transmission of the voltage sampling and holding command signal, outputs a transmission command signal to the integrated circuit CCn at the upstream end of the cascade circuit to transmit output voltages of the unit cells 1 held in the integrated circuits CC1-CCn to the battery controller 10. As a result, a time lag in the detection timings of output voltages of the unit cells 1 of the battery modules M1-Mn can be decreased.

Abstract: An apparatus for charging a battery of an electronic device is provided. The apparatus includes a battery configured to supply power to the electronic device; a charger configured to charge the battery according to a set charging voltage (V_SET) and a charging current (I_SET); and a controller configured to set the V_SET and the I_SET, and receive an output value of the charger or the battery during charging to re-set the V_SET if the output value corresponds to a pre-set reference range.