Abstract: A function extension module for charging stations and a method for its operation.

Abstract: A trans-inductor voltage regulator with fault detection has a plurality of transformers. Each transformer of the plurality of the transformers has a primary winding coupled to a switching circuit, and a secondary winding. Each secondary winding of each transformer of the plurality of transformers are coupled in series with a compensation inductor. The trans-inductor further has a controller operable to detect a) a short condition in a secondary side of each transformer of the plurality of transformers, b) a short condition between a primary side and the secondary side of each transformer of the plurality of transformers; c) an open condition in the primary side of each transformer of the plurality of transformers; and d) an open condition in the secondary side of each transformer of the plurality of transformers.

Abstract: A power supply device is provided. The power supply device includes a housing, a power converter, a controller, multiple humidity sensitive capacitors, and a feedback circuit. The housing has multiple joints. The controller controls the power converter to provide an output voltage. The humidity sensitive capacitors are respectively configured in the housing and adjacent to a corresponding joint of the joints. The humidity sensitive capacitors jointly provide a sensing capacitance value. The feedback circuit changes a gain value and a compensation bandwidth of the output voltage in response to the change of the sensing capacitance value. When the humidity of at least one of the joints increases, the sensing capacitance value is reduced, so that the gain value and the compensation bandwidth are reduced.

Abstract: A relay includes a fixed contact, a movable contact, a return member of the movable contact, and a case that covers the fixed contact, the movable contact, and the return member. The case is made of a material having transparency or translucency. The relay RS further includes a tray portion that is disposed above the return member and below the fixed contact and holds a fusing residue generated by separation/approach of the movable contact from/to the fixed contact. The relay further includes a cap that covers a portion of a terminal connected to the fixed contact, the portion being exposed from the case. When the cap is attached to the case, at least a portion of the case is exposed without being covered with the cap.

Abstract: An apparatus for identifying a fault in the windings of a distribution transformer, a transformer, and an associated method, said device comprising: a first Rogowski current sensor at a high-voltage incoming current terminal, and a second Rogowski current sensor in tandem at a low-voltage outgoing current terminal and at a low-voltage incoming current terminal; a first conductor of the low-voltage outgoing current terminal, passed through in one direction through the second sensor, and a second conductor of the low-voltage incoming current terminal, passed through in the opposite direction through the second sensor; the first and second sensors generate output signals indicating the primary current and the secondary current; both signals are integrated, generating output signals proportional to the primary current and the secondary current, obtaining a transformation ratio, which is compared with a threshold, and sending a fault signal if said threshold is exceeded.

Abstract: A package substrate, an apparatus for testing power supply noise, and a method for testing power supply noise are provided. The package substrate includes multiple pad arrays, and each of the multiple pad arrays at least includes power supply pads. Power supply pads belonging to a same power supply type in the multiple pad arrays are divided into a test pad and a power supply pad set. The power supply pad set includes power supply pads, other than the test pad, among the power supply pads belonging to the same power supply type, all the power supply pads in the power supply pad set are electrically connected together, and the test pad is configured to perform noise testing of at least one internal power supply corresponding to the same power supply type in a chip to be tested.

Abstract: A apparatus includes a reference signal generator, a droop detection circuit, a digital frequency-locked loop (DFLL), and a DFLL control circuit. The reference signal generator that receives a digital value and produces a pulse-density modulated signal based on the digital value. The droop detection circuit converts the pulse-density modulated signal to an analog signal, compares the analog signal to a monitored supply voltage, and responsive to detecting a droop of the monitored supply voltage below a designated value relative to the analog signal, produces a droop detection signal. The DFLL provides a clock signal for synchronizing circuitry within a domain of the monitored supply voltage. The DFLL control circuit, responsive to receiving the droop detection signal, causes the DFLL to slow the clock signal.

Abstract: A method for monitoring at least one Y-capacitance of an electrical on-board power supply of a vehicle includes ascertaining a current capacitance value of the at least one Y-capacitance and a current on-board power supply voltage of the electrical on-board power supply. The method further includes determining a currently stored amount of energy in the at least one Y-capacitance depending on the current on-board power supply voltage of the electrical on-board power supply and the current capacitance value of the at least one Y-capacitance of the electrical on-board power supply, comparing the currently stored amount of energy in the at least one Y-capacitance to a predetermined threshold value, and generating a control signal when the predetermined threshold value is exceeded in the comparing.

Abstract: In an inspection device, the reference signal output section is connected to an external power supply device in electrical parallel with a semiconductor sample, and outputs a reference signal according to the output of the external power supply device. The removal processing section performs, based on the reference signal, processing for removing a noise component, which is due to the output of the external power supply device from the current signal output from the semiconductor sample and outputs a processing signal. The electrical characteristic measurement section measures the electrical characteristics of the semiconductor sample based on the processing signal. The processing signal is subjected to the removal processing performed based on the reference signal from the reference signal output section for which the value of the gain has been set by the gain setting section.

Abstract: A method for analyzing effects of electrical perturbations on equipment in an electrical system includes processing energy-related signals from at least one intelligent electronic device in the electrical system to identify an electrical perturbation in the electrical system. An end time of the electrical perturbation may be determined, and electrical measurement data from prior to, during and/or after the end time of the electrical perturbation may be analyzed to identify and quantify the effects of the electrical perturbation on equipment in the electrical system. The effects may include, for example, equipment restarts/re-energizations due to the electrical perturbation. One or more actions may be taken or performed to reduce the effects of the electrical perturbation and extend the life of the equipment. The actions may include, for example, at least one of communicating the equipment restarts/re-energizations and controlling at least one component in the electrical system.

Abstract: The disclosure relates to a method and related device for approximately determining voltages at a high-voltage side of a transformer on the basis of measured voltages at a low-voltage side of the transformer.

Abstract: A method of automatic image rejection and monitoring of a frequency modulated continuous-wave (FMCW) radar system, includes generating a quadrature FMCW signal comprising an in-phase signal and a quadrature signal by a dual output FMCW signal generator. The in-phase signal and the quadrature signal are transmitted. A radar signal comprising a response in-phase and a quadrature signal is received in response to the transmitted in-phase signal and the quadrature signal. The response in-phase signal and quadrature signals are provided to an analog to digital converter (ADC). An in-phase beat signal (Beat-I) and a quadrature beat signal (Beat-Q) are extracted from the ADC, based on a received windowing signal. A relative phase and/or amplitude adjustment is generated by providing a phase calibration variable (?t) and/or an amplitude calibration variable (At) as input to the dual output FMCW signal generator, based on a correlation between the Beat-I and the Beat-Q.

Abstract: A method of managing a battery is disclosed. The method is capable of efficiently managing a battery by measuring a state of charge (SOC) and an energy storage amount of the battery within a short time. A battery management system and an electric vehicle charging system having the battery management system are also disclosed.

Abstract: A power detection circuit is provided for detecting current total input power of a resonant circuit. The power detection circuit includes a detection circuit and an estimation circuit. The detection circuit receives a current signal and obtains resonant-slot baseband power according to the current signal to generate the baseband power value. The current signal represents a resonant-slot current generated by the resonant circuit. The estimation circuit receives the baseband power value and estimates the current total input power according to the baseband power value to generate an estimated power value.

Abstract: The present technology is to provide a detector capable of detecting an input voltage outside the guaranteed operating voltage range, even if the delay time caused in a logic element by a decrease in power-supply voltage varies due to an external factor. The detector includes a plurality of first detection circuits, a first detection rate calculation unit, a plurality of second detection circuits, a second detection rate calculation unit, and a comparison determination unit. Each of the plurality of first detection circuits detects whether or not an input voltage has a value outside a guaranteed operating range for a normal operation. The first detection rate calculation unit calculates a first detection rate of the detected number of the first detection circuits, and each of the plurality of second detection circuits detects whether or not a predetermined reference voltage is lower than a threshold voltage.

Abstract: An energy harvesting device (CTH) installed in an electrical distribution system (EDS) for powering ancillary electrical devices (AD) used in the distribution system. The device includes a first voltage regulator circuit (CC) configured to produce a voltage matched to a power curve of a current transformer (CT) to which the device is electrically coupled. The device also includes a second and separate voltage regulator circuit (SVR) which continuously operates to maximize the amount of electrical energy recovered from the current transformer.

Abstract: A fan assembly is provided. The fan assembly includes a fan, a motor that is coupled to the fan, and a variable frequency drive (VFD) that is coupled to the motor. The motor includes a maximum rated speed that is greater than a maximum structural speed limit of the fan, and the VFD includes a current output limit configured to limit an operational speed of the motor to be less than or equal to the maximum structural speed limit of the fan.

Abstract: A driver circuit arrangement for driving a transistor bridge, which includes at least a first half-bridge composed of a low-side transistor and a high-side transistor, is described herein. In accordance with one example of the description, the circuit includes a current source and a detection circuit. The current source is operably coupled to the high-side transistor of the first half-bridge and configured to supply a test current to the first half bridge. The detection circuit is configured to compare a voltage sense signal, which represents the voltage across the high-side transistor of the first half-bridge, with at least one first threshold to detect, dependent on the result of this comparison, whether a short-circuit is present in the first half-bridge.

Abstract: A method (200) is disclosed for testing of wireless power transfer equipment (20) that has a plurality of wireless power transmitters (22a-n) adapted for concurrent wireless power transfer to respective wireless power receiver devices (10a, 10a?, 10d). The method comprises providing (210) a number of slave test devices (30a-n), and providing (220) a master test device (40) in communicative connection with the slave test devices (30a-n). The method further comprises arranging (230) each slave test device (30a-n) in a position suitable for receiving power from a respective one of the wireless power transmitters (22a-n) of the wireless power transfer equipment (20) under test, and commanding (240; 110a-n), by the master test device (40), the slave test devices (30a-n) to perform respective test procedures (120a-n) upon the respective wireless power transmitters (22a-n) while being in concurrent operation.

Abstract: The power consumption associated with use of an application is determined by causing one or more devices to execute the application. The state of the power source for each device is determined before, during, and after execution of the application. The state may include an amount of power discharged by the power source, an amount of power used to maintain a charge level of the power source, or a difference between a baseline power use and the amount of power consumed during use of the application. The determined states for the power sources of each device are used to generate an output that indicates periods of high and low power use. The output may associate these periods of power use with different characteristics of the functions that were performed during those time periods or of the devices. Using the output, a developer may optimize power use associated with an application.

Abstract: A load testing device or the like having a structure in which cooling air does not leak, is provided. A load testing device includes: a resistance unit having a resistor and a resistor holding frame holding the resistor; a cooling unit having a cooling fan; and an insulating frame disposed between the resistance unit and the cooling unit. The insulating frame is coupled with the resistance unit. The insulating frame is coupled with the cooling unit. The insulating frame covers a side surface of a flow path of cooling air from the cooling unit to the resistance unit between the cooling unit and the resistance unit.

Abstract: The present invention provides an offset calibration circuit used in a signal processing circuit, wherein the offset calibration circuit includes a supply voltage detection circuit and a calibration circuit. The supply voltage detection circuit is configured to detect a level of a supply voltage to generate a detection result, wherein the supply voltage is provided to an output stage in the signal processing circuit. The calibration circuit is configured to calculate a digital compensation value according to the detection result, wherein the digital compensation value is used for a digital processing circuit in the signal processing circuit to perform a DC offset calibration.

Abstract: An apparatus includes a resistor having a resistor terminal. The apparatus includes a capacitor coupled to the resistor terminal. The apparatus includes a transistor having a current terminal and a gate. The gate is coupled to the resistor terminal and coupled to the capacitor. The apparatus includes a comparator having a comparator input and a comparator output. The comparator input is coupled to the current terminal. The apparatus includes a latch having a latch input coupled to the comparator output.

Abstract: A power glitch signal detection circuit, a security chip and an electronic apparatus are disclosed. The power glitch signal detection circuit comprises: a latch and a signal output module, wherein a first input of the latch is connected to a power supply voltage, a first output of the latch is connected to a ground voltage, a second input of the latch is connected to a third output of the latch, a third input of the latch is connected to a second output of the latch, and the second output or the third output is connected to the signal output module. The power glitch signal detection circuit could detect a power glitch on the power supply voltage or the ground voltage, and the power glitch signal detection circuit has the advantages of low power consumption, small area, high speed, high sensitivity and strong portability.

Abstract: The present disclosure relates to systems and methods to conduct a fuzzer test on a device under test and configured for use in an electric power system. In one embodiment, a system may include a configuration subsystem to receive a parameter of the device under test. A fuzzer subsystem in communication with the configuration subsystem may be configured to conduct a fuzzer test on the device under test. The fuzzer subsystem may include a fuzzer state machine to generate input data to deliver to the device under test, a packet buffer to store input data generated by the fuzzer state machine, and a packet regulator to deliver input data generated by the fuzzer state machine based the parameter. A physical interface in communication with the packet regulator may transmit input data to the device under test based on the parameter.

Abstract: A method of detecting a serial arc fault in a DC-power circuit includes injecting an RF-signal with a narrow band-width into the DC-power circuit and measuring a response signal related to the injected RF-signal in the DC-power circuit. The method further includes determining a time derivative of the response signal, analyzing the time derivative, and signaling an occurrence of a serial arc fault in the power circuit based on the results of the analysis. A system for detecting an arc fault is configured to perform a method as described before.

Abstract: An electric measuring assembly and a method for continuously monitoring a protective-conductor resistance of a protective-conductor connection in a power supply system having a supply station, a supply line, and an electric installation, grounded via the connection. A signal generator generates a signal alternating voltage having a measuring frequency; a first transformer encircles the connection and a first winding inductively couples the voltage into the connection so a loop current flows via first and second leakage capacitors, the active conductors, and the connection, and a second winding for the second measurement of a protective-conductor voltage; a second transformer encircles the connection and has a secondary winding capturing a protective-conductor current flowing in the connection; an evaluation unit determines a loop impedance from the protective-conductor voltage and the protective-conductor current for evaluating the real part of the loop impedance.

Abstract: An apparatus of controlling charging of a vehicle battery may include a charging device of a vehicle, the charging device configured to generate a boosted voltage higher than a charging voltage of electric vehicle supply equipment provided outside the vehicle and to charge a battery storing power for driving the vehicle, and a vehicle control unit configured to determine whether power line communication transmitting information for charging the battery performed with the electric vehicle supply equipment provided outside the vehicle and providing the charging voltage to the charging device of the vehicle is off while the battery is charged by the boosted voltage.

Abstract: The technology described herein is generally directed towards a system for power transmission system protection and fault location, such as implemented in a deployable device at one or more junction points of a power transmission system. Aspects of the described technology can be directed to analyzing a traveling wave corresponding to a fault on a power transmission system. Example aspects can comprise receiving data representing current and voltage components of a traveling wave, maintaining the data in storage for fault location determination of the fault, transforming the data via a wavelet transform, into wavelet transform results and using the wavelet transform results for protection of the power transmission system.

Abstract: An integrated circuit, can comprise a first power supply terminal configured to supply a first voltage, a second power supply terminal configured to supply a second voltage, a first supply monitor including a detector having a first input and a second input, and configured to provide a fault indicator based on a comparison between the first and second inputs, and switching circuitry configured to during a normal operating mode, couple a voltage derived from the first voltage to the first input and a voltage derived from the second voltage to the second input, and during a self-test mode, couple the voltage derived from the second voltage to the first input and the voltage derived from the first voltage to the second input.

Abstract: The present invention related to the field of power system protection and control, presents a voltage travelling wave differential protection method considering the influence of frequency-dependent parameters, which provides more accurate and rapid fault identification. The technical scheme of the present invention is as follows: a calculation method of voltage travelling-wave differential protection for VSC-HVDC transmission lines, taking the influence of the frequency-dependent parameters into consideration, the steps are as follows: calculating a characteristic impedance and propagation coefficient of the frequency-dependent transmission line in time domain, collecting voltage and current signals at the both ends of the transmission line and then calculating the forward and backward voltage travelling wave, respectively, comparing a differential value of voltage travelling wave with a preset threshold value to determine whether the internal fault occurs.

Abstract: The present disclosure pertains to systems and methods for measuring electrical parameters in an electric power system. In one embodiment, a system may include a line-mounted wireless current sensor comprising a current monitoring subsystem to generate a current measurement of an alternating current flow through an electrical conductor. The line-mounted wireless current sensor may harvest power from the electrical conductor. A processing subsystem may generate a message comprising the current measurement, and the message may be transmitted at a synchronization point using a wireless communication subsystem. An intelligent electronic device (IED) may receive the message. The IED may further generate a voltage and generate a phasor based on the current measurement and the voltage measurement. A control action subsystem may implement a control action (e.g., selectively connecting or disconnecting a capacitor bank) based on the phasor.

Abstract: In an example, an apparatus can include an array of memory cells and a neural memory unit controller coupled to the array of memory cells and configured to assert respective voltage pulses during a first training interval to memory cells of the array to change respective threshold voltages of the memory cells from voltages associated with a reset state to effectuate respective synaptic weight changes. The neural memory unit controller can be configured to initiate a sleep interval, during which no pulses are applied to the memory cells, to effectuate respective voltage drifts in the changed respective threshold voltages of the memory cells from a voltage associated with a set state toward the voltage associated with the reset state, and determine an output of the memory cells responsive to the respective voltage drifts in the changed respective threshold voltages after the sleep interval.

Abstract: Provided are a failure diagnosis method and apparatus for open circuit failure of a power tube of a three-phase rectifier based on a current signal, relating to a failure diagnosis technique for power electronic equipment and capable of quickly and accurately diagnosing on an open circuit failure of the power tube of the three-phase rectifier without adding a hardware component. The failure diagnosis method only requires a sampled current existing in the control system of the rectifier and some intermediate computing signals and is therefore simple and requires little computing resource. A distorted current after the open circuit failure occurs in the power tube of the rectifier and a positive/negative half cycle where the current is present when the failure occurs serve as diagnostic variables. By analyzing the sampled current, a quick diagnosis on the power tube having the open circuit failure is provided. Thus, the invention is highly applicable.

Abstract: In a power supply control device, a switching device turns a main switch on or off to control supply of power via the main switch. When a battery supplies power to the switching device, a fuse is disposed in a first current path of an output current output from the switching device. A diode is disposed in a second current path of the output current different from the first current path. If a current flowing through the fuse increases to or above a first threshold, the fuse blows. If a current flowing through the diode increases to or above a second threshold, the diode blows.

Abstract: A wireless power transmission apparatus can include a resonant circuit including a plurality of coils and a plurality of capacitor elements respectively connected to the plurality of coils; a first sensor configured to sense a change in inductance of each of the plurality of coils; a second sensor configured to sense a change in a quality factor of each of the plurality of coils; and a controller configured to calculate feature values based on an inductance variation and a quality factor variation for detecting a foreign object, and determine the foreign object is present on a charging surface of the wireless power transmission apparatus based on whether a feature value combination selected from among the feature values falls within a reference region on a coordinate plane formed by an intersection of a first axis and a second axis, in which the first axis is based on inductance variation and the second axis is based on quality factor variation.

Abstract: There are disclosed fault detection circuits and methods for an N-to-1 Dickson topology hybrid DC-DC power converter. A short circuit fault detection circuit comprises: first and second measuring circuits configured to measure first and second voltages, Vsw1, Vsw2, at the switching node in the first and second state; first and second calculation circuits configured to calculate first and second absolute error voltage as an absolute difference of the respective first and second voltages in one operating cycle (Vsw1[n?1], Vsw2[n?1]) and in a next subsequent operating cycle (Vsw1[n], Vsw2[n]); and first and second fault circuits configured to provide first and second fault outputs indicative of a fault in response to the respective first or second absolute error voltage exceeding a short-circuit-trip level. Open circuit fault detection circuits and methods are also disclosed.

Abstract: A hardware together with a software are used to implement a control pilot (CP) status detection for protecting a DC charging pile when errors happens, such as short circuit or open circuit, at CP point. The circuit for detecting the abnormality of the CP point includes a detection circuit, which is coupled to a CP signal generating circuit of the charging pile to provide an abnormal state detection when an electrical vehicle is electrically connected to the DC charging pile, and output the detected CP signal to a control circuit. It includes a DC voltage converter that converts a DC input voltage into two DC output reference voltage levels, a rectifier circuit to filter out the negative potential of the CP signal generating by the CP signal generating circuit, and a CP signal isolation circuit, connected to the rectifier circuit to provide isolated CP signals to the control circuit.

Abstract: In one form, a power supply monitor including a current controlled oscillator circuit, a time-to-digital converter, and an output divider. The current controlled oscillator circuit has an input for receiving a power supply voltage to be measured, and an output for providing a frequency signal having a frequency linearly proportional to the power supply voltage. The time-to-digital converter has an input coupled to the output of the current controlled oscillator circuit, and an output for providing a count signal representative of a number of cycles of a reference clock signal per cycle of the frequency signal. The output divider has an input coupled to the output of the time-to-digital converter, and an output for providing a divided count signal representative of a value of the power supply voltage, and provides the divided count signal by dividing a fixed number by the count signal.

Abstract: An electronic device is provided. The electronic device includes a display panel on which a plurality of pixels are arranged, first group lines providing a source voltage to each of the plurality of pixels, a display driver integrated circuit that includes a plurality of source amplifiers electrically connected with the first group lines and providing the source voltage to each of the plurality of pixels, at least one sensing line crossing the first group lines, and first group switches disposed on the at least one sensing line, and a sensing circuit electrically connected with one end of the at least one sensing line to check a crack in at least a partial region of the electronic device.

Abstract: A power glitch signal detection circuit, a security chip and an electronic apparatus are disclosed. The power glitch signal detection circuit includes: a voltage sampling module configured to acquire and output a sampled voltage of a power supply voltage; a detection unit array, including multiple MOS transistors with various threshold voltages, wherein first terminals of the multiple MOS transistors are connected to the sampled voltages, and second terminals of the multiple MOS transistors are connected to the power supply voltage; a switch array, including multiple switches corresponding to the multiple MOS transistors; and a signal generation circuit, wherein drain terminals of the multiple MOS transistors are connected to the signal generation circuit through the multiple switches respectively.

Abstract: An electrical device includes a housing defining a chamber, a power converter arranged within the chamber, and a sensor. The sensor includes a coil arranged within the chamber and in radio frequency communication with the power converter to detect partial discharge of a voltage potential applied to the power converter. Health monitoring systems and health monitoring methods are also described.

Abstract: An impact-resistant, photovoltaic (IRPV) window system is provided. The system may include an IRPV window coupled to a structure, a controller, and an insurance computing device. The IRPV window may include an impact resistant (IR) layer, a photovoltaic (PV) material that may generate an electrical output, and an electrode coupled to the PV material that may receive the electrical output. The IRPV window may permit a portion of visible light to pass through the IRPV window. The controller may monitor the electrical output and generate a solar profile of the structure based upon the electrical output. The insurance computing device may receive the solar profile and determine if an insurance policy associated with the structure is eligible for a policy adjustment and/or an insurance reward or discount offer.

Abstract: A rotation direction detecting device has a current detector detecting the direction of current flowing through a motor, a voltage detector detecting voltages before and after the motor in a power supply line, and a rotation direction detector detecting the rotation direction of the motor based on the direction of the current and the voltages before and after the motor. The current detector is connected to points A, B before and after a shunt resistor, and detects the direction of the current flowing in the power supply line to form current direction information. The voltage detector is connected to points A, C before and after the motor, and detects the voltage at each position to form motor terminal voltage information. The rotation direction detector detects the rotation direction of the motor using a logical combination of the current direction information and the motor terminal voltage information.

Abstract: A fault diagnosis system of a power converter for an electric vehicle includes a power supply supplied with power and converting the supplied power to provide the power to a motor, a battery, and an electronic device of a vehicle, a power supply supplied with power and converting the supplied power to provide the power to a motor, a battery, and an electronic device of a vehicle, a controller connected to the power supply by a connector and controlling charging and discharging of the battery, and operations of the motor and the electronic device of the vehicle by using the power provided from the power supply, and a fault diagnosis circuit connected between the power supply and the controller and diagnosing whether the connector which connects the power supply with the controller malfunctions.

Abstract: An output terminal of a signal output device is connected through a branch path to a voltage dividing point in a main path, and transmits an output signal based on a voltage of the voltage dividing point to an outside. A signal generation circuit adjusts the voltage of the voltage dividing point and generates the output signal. A short circuit detection circuit detects a short circuit between the output terminal and another terminal when a current flowing in the branch path is greater than a predetermined short circuit detection threshold. A switching circuit switches a current carrying capacity or a configuration of the signal generation circuit to limit a short circuit current flowing in the branch path when the short circuit is detected. The short circuit current is set to a value equal to or greater than the short circuit detection threshold and less than a current upper limit value.

Abstract: A method of detecting a serial arc fault in a DC-power circuit includes injecting an RF-signal with a narrow band-width into the DC-power circuit and measuring a response signal related to the injected RF-signal in the DC-power circuit. The method further includes determining a time derivative of the response signal, analyzing the time derivative, and signaling an occurrence of a serial arc fault in the power circuit based on the results of the analysis. A system for detecting an arc fault is configured to perform a method as described before.

Abstract: A vehicle comprises a motor configured to output a power for driving; a power storage device configured to supply electric power to the motor; a main relay provided between the motor and the power storage device; a power receiving connector configured to be connectable with a power feed connector of an external charger; and a charging relay connected with the power receiving connector and connected with the power storage device via the main relay. This vehicle further comprises a control device configured to determine whether electric power from the external charger is supplied to the power receiving connector during charging of the power storage device with the electric power from the external charger in closed positions of the main relay and the charging relay and to open the main relay when it is determined that the electric power from the external charger is not supplied to the power receiving connector.

Abstract: A chip includes at least one oscillator circuitry and a controller circuitry. The at least one oscillator circuitry is disposed at different locations of the chip, and respectively generates a plurality of oscillating signals. The controller circuitry transmits the oscillating signals to an external system, in order to determine a performance of the chip based on the oscillating signals. Each of the at least one oscillator circuitry includes a first oscillator circuit and a second oscillator circuit. The first oscillator circuit senses a variation of a semiconductor device in the chip, in order to generate a first oscillating signal of the oscillating signals. The second oscillator circuit senses a variation of a parasitic component in the chip, in order to generate a second oscillating signal of the oscillating signals.

Abstract: A modular power supply including a voltage regulator configured to output a voltage, a first output configured to connect to a device under test and output the voltage from the regulator, a microcontroller connected to the voltage regulator, and an interface configured to connect to a test and measurement instrument. The interface includes an input configured to receive power from the test and measurement instrument and a second output configured to output a signal characteristic of the first output.