Abstract: The application provides a high-voltage interlocking device and method for detecting the high-voltage interlocking device. The high-voltage interlocking device includes a first resistance module; a first switch module, a second connection end of the first switch module being connected to a first reference potential through a third resistance module, and a control terminal of the first switch module being configured to receive a first driving signal, to enable the first switch module to be turned on or off; a second resistance module, another end of the second resistance module being connected to a second reference potential; a fourth resistance module; a second switch module, a second connection end of the second switch module being connected to a third reference potential through a fifth resistance module; a fault detection module, configured to determine a fault of the high-voltage component underdetection according to a first detection signal.

Abstract: A hydraulic motor vehicle braking system includes a first sensor device, a first functional unit, a second functional unit and a switching device. The first functional unit comprises at least one first electrical brake pressure generator, by means of which a brake pressure can be generated on respective wheel brakes, and a first control system which is designed to control the at least one first electrical brake pressure generator on the basis of a sensor signal of the sensor device. The second functional unit comprises at least one second electrical brake pressure generator, by means of which a brake pressure can be respectively generated on a subset of the wheel brakes, and a second control system which is designed to control the at least one second electrical brake pressure generator on the basis of the sensor signal in the event of a failure of the first functional unit.

Abstract: There is described a method for assembling or repairing an electrical cable in an environment. The method comprises obtaining a unique identifier of an origin connector of the electrical cable to be assembled or repaired. A computing device receives a reading of the unique identifier of the origin connector of the electrical cable to be assembled or repaired and identifies a connection between the origin connector of the electrical cable to be assembled or repaired and a destination electrical component. At the computing device, there is made a determination of the connection that was identified with a connectivity list required for the electrical cable, from a database, to determine a next step of the assembling or the repairing which depends on the connection identified by the computing device.

Abstract: A system for control of an electric powertrain is provided. The powertrain includes a battery configured for providing electrical energy at a first relatively higher voltage in direct current. The powertrain further includes a power inverter including a first phase circuit, a second phase circuit including first and second switches, and a third phase circuit including third and fourth switches. The powertrain further includes a motor configured for receiving alternating current electrical energy from the power inverter. The system further includes a computerized controller operating a charging cycle. The charging cycle includes deactivating the first phase circuit of the power inverter and selectively cyclically activating the first switch, the second switch, the third switch, and the fourth switch to direct electrical energy provided at a second relatively lower voltage in direct current through the motor to provide a flow of electrical energy at the first voltage to the battery.

Abstract: The invention relates to a method for detecting events by reflectometry in an electrical line of an avionic system, said line being fed with an AC voltage at a first frequency (f1), said AC voltage being sinusoidal and composed of a succession of alternate half-periods, said method comprising a step of injecting a reflectometry signal into the network, the reflectometry signal having a second frequency (f2) higher than the first frequency (f1); wherein the injecting step is synchronized with the AC voltage, the injecting step being carried out by injecting the reflectometry signal into the network during an injection duration (ti) comprised between the start and end of a half-period (t1) of the AC feed voltage.

Abstract: A method and a device for the diagnosis of the active discharge of a HV intermediate circuit of an electric vehicle.

Abstract: A controller (1) forms an insulation measurement path and turns on a third switch connected in parallel to a capacitor, (2) after a lapse of a first time period turns off the third switch, and (3) detects an insulation abnormality based on a voltage of the capacitor measured after a lapse of a second time period after the turning off of the third switch.

Abstract: A detection circuit for open, close and suspension states of a high and low level effective switch in a vehicle. The circuit includes an optocoupler circuit module, a low-level active path module, a high-level active path module, a filtering and debouncing module, a transient suppression module, and a wiring terminal. The optocoupler circuit module is connected to the low-level active path module, the high-level active path module and the low-level active path module are connected in parallel to the filtering and debouncing module, and the filtering and debouncing module is connected to the transient suppression module, and then connected to the external high-level active switch or low-level active switch through the wiring terminal. Whether it is a high-level active switch or a low-level active switch, the detection circuit can distinguish whether the switch is in the closed or suspended state, and the strong and weak voltages are isolated.

Abstract: A ground fault detection device connected to a high-voltage battery and a positive electrode side Y capacitor includes: a detection capacitor operating as a flying capacitor, a first switch and a first resistor connecting a positive electrode side of the high-voltage battery and one end of the detection capacitor in series, and a discharge circuit including at least a discharge capacitor. The discharging circuit has one end connected to the positive electrode side of the high-voltage battery and an another end connected to the negative electrode side of the high-voltage battery. The discharge circuit further includes: a fifth switch that connects one end of the discharge capacitor and the positive electrode side Y capacitor, and a second discharge resistor and an eighth switch that connect the another end of the discharge capacitor and the ground in series.

Abstract: An on-vehicle motor-driven compressor includes an inverter device having a noise reducer. The noise reducer includes a common mode choke coil. The common mode choke coil includes an annular core, first and second windings wound around the core, the second winding being spaced apart from and opposed to the first winding, an annular conductor that extends over the first winding and the second winding and covers the core, and an insulating layer located between an inner circumferential surface of the conductor and outer surfaces of the first winding and the second winding. The conductor is tubular and belt-shaped. The core includes an exposed portion that is not covered by the conductor. The insulating layer is tubular and belt-shaped. An entirety of the conductor is arranged within a range between opposite ends of the insulating layer.

Abstract: A grounding cable warning device includes a housing affixable to a grounding cable. An electrical current transformer is disposed within the housing. An energy storage component is disposed within the housing. A first sensor is disposed within the housing and configured to detect an electrical current in the grounding cable. A second sensor is disposed within the housing and configured to detect a voltage of the grounding cable. One or more electronic indication components are arranged with the housing and configured to alert a user of an unsafe condition. A microcontroller is disposed within the housing and receives input from the first sensor and the sensor and actuates the one or more electronic indication components, in response to receipt of the input, to alert the user of the unsafe condition.

Abstract: Systems and techniques that facilitate smart CAN termination are provided. In various embodiments, a system can comprise a sensor component that can measure an impedance of a controller area network (CAN) bus. In various aspects, the system can further comprise a termination component that can convert at least one node of the CAN bus from a non-terminating state to a terminating state, based on the impedance.

Abstract: Systems and methods for a remote vehicle light check of a host vehicle having a plurality of lights is provided. In one embodiment, a method includes detecting a lighting check signal at a host vehicle having lights. The lighting check signal is received from a trigger device. The method also includes triggering a light sequence in response to the lighting check signal being detected. The light sequence causes one or more lights of the plurality of lights to be activated. The method further includes activating the one or more lights based on the light sequence. The method further includes pausing the activation of the one more lights by a predetermined delay.

Abstract: A system and method for monitoring leakage current in a heater connected to a heater power supply by a power cable having a first power lead conducting an inlet current defining an inlet current direction and a second power lead conducting an outlet current defining an outlet current direction that is opposite the inlet current direction. The system includes a differential current electromagnetic sensor having a magnetic core with a center region that the power cable passes through one or more times. The magnetic core has an air gap in which a magnetic flux sensing device is positioned and configured to provide a signal that is representative of magnetic flux across the air gap, which is indicative of a difference between the inlet current and the outlet current. This difference defines the leakage current.

Abstract: Dynamically monitoring of an electrically-isolated power bus for a DC power system is described, and includes dynamically monitoring voltage and current on the power bus to determine a variation in the voltage on the power bus. When the variation in the voltage on the power bus is less than a threshold, an active positive isolation resistance term and an active negative isolation resistance term are determined. A first voltage balance term is determined based upon a ratio of the active positive isolation resistance term and the active negative isolation resistance term. A dynamic positive isolation resistance term and a dynamic negative isolation resistance term are determined based upon the active negative isolation resistance term. A fault associated with the power bus is determined based upon the dynamic positive isolation resistance term and the dynamic negative isolation resistance term.

Abstract: An LED component comprises a plurality of fused light-emitting diodes (LEDs) (e.g., micro-transfer printable or micro-transfer printed LEDs). Each fused LED comprises an LED with first and second LED electrical connections for providing power to the LED and a fuse with first and second fuse electrical connections. The first LED electrical connection is electrically connected to the first electrode. The first fuse electrical connection is electrically connected to the second LED electrical connection and the second fuse electrical connection is electrically connected to the second electrode. A fused LED source wafer comprises an LED wafer having a patterned sacrificial layer forming an array of sacrificial portions separated by anchors and a plurality of fused LED components, each fused LED component disposed entirely on or over a corresponding sacrificial portion. A light-emission system comprises a system substrate and a plurality of fused LED components disposed on or over the system substrate.

Abstract: The present disclosure discloses a detection circuit and method. The detection circuit comprises: a controller, a battery pack, a main positive switch module, a main negative switch module and at least one detection loop. The controller collects voltages of a positive electrode and a negative electrode of the battery pack and a voltage between external sides of the main positive switch module and the main negative switch module when turning on the main positive or negative switch module and after turning on any detection loop, and obtains resistance values of insulation resistors of the external sides according to resistance values of insulation resistors of internal sides of the main positive and negative switch module, as well as the voltages of the positive electrode and the negative electrode and the voltage between the external sides of the main positive switch module and the main negative switch module, which are collected twice.

Abstract: The protection circuit unit includes an energization module disposed on an electric path between a high-voltage battery of a vehicle and a high-voltage load receiving supply of power from the high-voltage battery, to open and close the electric path, and a control board configured to be a member separated from the energization module and electrically connected with the energization module, to control opening and closing of the electric path. The energization module includes semiconductor switches opening and closing the electric path, and a control terminal connecting the semiconductor switches with the control board. The control board includes a connection unit corresponding to the control terminal of each of a plurality of types of the energization modules.

Abstract: A charging control device for charging an electric vehicle according to one embodiment of the present invention comprises: a first switch unit for receiving a first control signal from the outside; a first control unit for receiving the first control signal through the first switch unit; a second switch unit for receiving a second control signal from the outside; a second control unit which is woken up by the first control unit and receives the second control signal through the second switch unit; and a motor control unit which is controlled by the second control unit and controls driving of a motor for a charging flap, wherein the second control unit disables the first switch and enables the second switch when the second control unit is woken up by the first control unit.

Abstract: The present invention discloses an external battery short-circuit testing device, configured to perform short-circuit test on a battery pack under test. The external battery short-circuit testing device comprises a plurality of fuses; a Hall current transducer, coupled to the plurality of fuses; a current meter, coupled to the Hall current transducer and the battery pack under test; a voltmeter, coupled to the battery pack under test; a variable resistor, coupled to the Hall current transducer; an electromagnetic switch, coupled to the variable resistor and the battery pack under test; and an operation unit, comprising a voltage measurement unit, a current measurement unit, a temperature measurement unit and a switch control unit.

Abstract: A leakage current protection system includes a current transformer disposed about current-carrying conductors that extend from first ends to second ends. The first ends are coupled to load receptacles. The current transformer detects an aggregate differential current between the conductors. Each of a plurality of circuit breakers is coupled to the second ends of the conductors that are coupled to a corresponding one of the load receptacles. Each circuit breaker is coupled to a source of electrical power. A differential current monitor coupled to the current transformer generates a signal when the aggregate differential current exceeds a threshold current. Each of a plurality of shunt-trips coupled to the differential current monitor receives the signal. Each of the shunt-trips opens a corresponding one of the circuit breakers when the signal is received so that all of the circuit breakers are opened simultaneously.

Abstract: A hardware-based detection system includes, among other things, a signal-generating circuit for generating a signal which is functionally related to current in a motor winding, a reference current, and a duration of time. The system may also include a comparator circuit for comparing the generated signal to a reference signal, and for thereby detecting an over-temperature condition in the motor winding. If desired, a compensating circuit may be used to generate a variable reference signal as a function of ambient temperature. A method of operating a detection system is also disclosed. If desired, the detection system may be completely implemented in hardware using an uncomplicated analog circuit architecture.

Abstract: A capacitor is connected between an output terminal of an impedance element and an electricity storage unit mounted in a vehicle, and the electricity storage unit is electrically insulated from a chassis of the vehicle. An earth fault determiner determines that an earth fault occurs, when a detection value based on a peak-to-peak value of a voltage at a node between the impedance element and the capacitor is less than or equal to a first reference value and more than or equal to a second reference value. The first reference value is set based on the peak-to-peak value of the voltage at the node when an insulation resistance between the electricity storage unit and the chassis of the vehicle is a minimum allowable value. The second reference value is set based on the peak-to-peak value of the voltage at the node when a complete earth fault occurs between the electricity storage unit and the chassis of the vehicle.

Abstract: A system to carry out a systematic selection of a specification for a first vehicle. The specification includes several parameters related to at least one characteristic for the first vehicle. The system includes a collection device for collection of operational data from at least one other vehicle. The operational data comprises information about how the at least one other vehicle has been used. A simulation device simulates how an adjustment of at least one of the several parameters impacts the at least one characteristic for the first vehicle. The simulation being based on the operational data. Also, selection device selects at least one specification based on the simulation.

Abstract: A device for open load diagnosis of a signal line in a digital system in which a logic state is represented by a band of voltages lying between first and second voltage limits is described. The device is configured to cause the signal line to reach a first, stable voltage lying in the band, to apply a second, different voltage to the signal line lying in the band and without leaving the band, to perform a time constant dependent measurement so as to determine a value of a parameter which is or depends on resistance of a load between the signal line and a reference line, to compare the value of the parameter with a reference value of the parameter and, in dependence on comparison, to signal the result.

Abstract: The present invention refers to a device and a method for measuring isolation resistance of a battery powered systems. The device comprises: a first reference resistance (R01) connectable in series between a positive high-voltage bus (1) and a low-voltage ground connection (5), a second reference resistance (R02) connectable in series between the negative high-voltage bus (2) and the a low-voltage ground connection (5), a first measurement resistance (Rbottom) connected with the low-voltage ground connection (5), a second measurement resistance (Rtop1) connectable in series between the positive high-voltage bus (1), and the first measurement resistance (Rbottom), and a third measurement resistance (Rtop2) connectable in series between the negative high-voltage bus (2), and the first measurement resistance (Rbottom).

Abstract: The present invention relates to an insulation resistance measuring system and device which calculate resistance values of the positive electrode insulation resistance and the negative electrode insulation resistance by using convergence values of the first voltage and the second voltage, in order to measure the positive electrode insulation resistance and the negative electrode insulation resistance connected to both terminals of a battery pack with a capacitor, respectively.

Abstract: The present invention provides a diagnosis system for vehicular DC charging relay, the system comprises a controller, two resistor clusters R1 and R2, and a switch S, wherein, two resistor clusters R1 and R2 are bridging in a serially connected way in between the DC charging high voltage cables of the vehicle, the resistor cluster R1 consists of two serially connected sub-resistors, and the controller is able to measure a voltage V1 at a common terminal of the two serially connected sub-resistors via a first voltage detection port, the resistor cluster R2 consists of two serially connected sub-resistors, and the controller is able to measure a voltage V2 at a common terminal of the two serially connected sub-resistors via a second voltage detection port, the controller is able to execute a diagnosis operation, and the diagnosis operation is based on the measurements of the voltages V1 and V2.

Abstract: When ignition is on, a shift position is a neutral position, and shut-down of the inverter is cancelled in a state that a short circuit fault occurs in any phase among multiple phases of the inverter, the electrically driven vehicle performs a first ON control to turn on upper and lower arms in any arbitrary phase among the multiple phases. When an abnormality is detected in the inverter due to the first ON control, the electrically driven vehicle performs a second ON control to turn on upper and lower arms in a different phase from the phase of the first ON control.

Abstract: A power converter provides a first output voltage and a second output voltage in accordance with a control input, wherein the first output voltage is higher than the second output voltage. A switch that is series coupled between i) an energy reservoir node and ii) a power supply node or a power return node. A charge maintenance circuit is coupled to the energy reservoir node, and when the switch is closed can maintain a selected amount of charge in or a selected voltage across an energy reservoir element that may be coupled to the energy reservoir node. Other aspects are also described and claimed.

Abstract: An electrical circuit for a mobile machine, including an interface coupled between a controller and a plurality of sensors for accurately diagnosing faults in all of the sensor wires and the sensors themselves. This effective resolution reduces the downtime of the mobile machine and operator time by allowing faults to be timely isolated. The interface selectively couples a test signal to each of the sensor conductors, and also selectively couples a responsive returned characteristic signal to the controller, where the returned characteristic signal enables the controller to diagnose each of the plurality of conductors and sensors for faults. The electrical circuit may further include testing circuitry that can specifically determine a location of the determined fault in each of the plurality of conductors or each of the plurality of sensors.

Abstract: A mattress containing a core section, a high loft non-woven layer at least partially covering a first side of the core section and containing a plurality of heat and flame resistant fibers, bulking fibers, and binder fibers, a ticking layer at least partially covering the high loft non-woven layer and containing a textile layer, a pattern coated layer. The pattern coated layer may be printed on the high loft non-woven layer, the ticking layer, or any layer between the high loft non-woven layer and the ticking layer. The pattern coated layer contains a blend of microencapsulated phase change material (PCM) and a binder, wherein the PCM is fully encapsulated by the binder.

Abstract: A wire harness includes a linear trunk line section formed by bundling a plurality of power supply lines serving as linear wiring bodies wired in a vehicle and a pair of trunk line end distributors each of which is connected to a corresponding one of both ends of the linear trunk line section and distributes electric power from a power supply mounted on the vehicle to each connected appliance, the power supply being connected to at least one end of each of the trunk line end distributors. Thus, with the wire harness, a wiring path can be simplified by combining the linear trunk line section and the pair of trunk line end distributors.

Abstract: A semiconductor abnormality detection circuit includes a semiconductor circuit and a controller which controls supply of power to a load. The semiconductor circuit includes a switch device disposed between a power source and the load, and a sense signal generator generating a sense signal corresponding to a current flowing through the switch device. The controller judges that the semiconductor circuit is operating normally if the instruction voltage level is equal to an off-voltage corresponding to non-energization of the switch device and a voltage of the sense signal is equivalent to a prescribed off-voltage corresponding to non-energization of the switch device or the instruction voltage level is equal to an on-voltage corresponding to energization of the switch device and a voltage of the sense signal is equivalent to a prescribed on-voltage corresponding to a steady energization state of the load.

Abstract: A circuit (200, 300, 400, 600, 700, 800) interfacing a device (20, 30, 40, 60, 80) with a line-pair includes: a diode bridge (210) having polarity-independent input terminals coupled to the line-pair; a galvanic isolation device (230, 330) receiving a transmit signal and coupling the transmit signal to its output; a variable edge delay circuit (270, 370, 572, 574, 576) that delays rising/falling edges of the transmit signal more than falling/rising edges of the transmit signal; a voltage-controlled variable resistance element (260, 360, 460) connected across output terminals of the diode bridge; and a filter connected to a control terminal of the voltage-controlled variable resistance element. The filter includes decoupled charge and discharge paths to decouple the rise time of the transmit signal from the fall time of the transmit signal. The voltage-controlled variable resistance element couples the transmit signal to the line-pair via the diode bridge.

Abstract: A system and method for diagnosing insulation-breakdown of a vehicle component including a system in a vehicle including high voltage components are provided. The system includes a battery pack that is configured to supply a high voltage to the vehicle and a high voltage relay that is connected to an output stage of the battery pack. Additionally, a high voltage component controller is connected to an output stage of the high voltage relay to turn the high voltage component on and off. A battery management system interlocks with the battery pack, the high voltage relay, and the high voltage component controller to diagnose whether the battery pack, an input stage of the high voltage component controller, and the high voltage component are insulated-breakdown.

Abstract: Embodiments relate to a control device for an electric motor having at least one phase. The control device includes a power unit having a first switching element and a first flyback element corresponding to the first switching element and a second switching element and a second flyback element corresponding to the second switching element. The first switching element is designed to couple a corresponding power connection of the motor with a positive supply voltage. The second switching element is designed to couple the corresponding power connection of the motor with a negative supply voltage; and a control unit designed to separately detect a first current flowing through the first switching element or second switching element corresponding to the phase, to detect a second current flowing through the flyback element corresponding to the respective second switching element or first switching element, and to control the switching elements of the power unit.

Abstract: The invention uses the backlight of a display monitor such as LCD monitor or OLED monitor as the lighting to replace dome light lamp in a vehicle. The in-vehicle lighting device has an input circuit for inputting commands to generate the dome light, a control circuit for receiving the commands and outputting an equivalent panel signal, and a display monitor for receiving the equivalent panel signal and emitting the dome light based on the equivalent panel signal.

Abstract: When a voltage applied to a heater assumes a low-level potential, a control section of a load drive apparatus instantaneously supplies an anomaly judgment current to the heater, and computes the electrical resistance of the heater on the basis of the anomaly judgment current. The control section judges whether or not any of anomalous states of the heater, including at least a deteriorated state of the heater and wiring anomalous states of the heater, has occurred on the basis of the electrical resistance of the heater.

Abstract: Method and apparatus for a current sensing device including a magnetoresistive magnetic field sensing element positioned with respect to a shaped conductor such that an applied field generated by current through the shaped conductor forms an offset angle theta defined by the applied field and a field of a pinning layer of the magnetoresistive element. The offset angle increases a linearity of the device output for current in the shaped conductor flowing in a first direction. A further sensor can increase linearity in the opposite direction.

Abstract: A method for setting a parking brake includes determining a standard deviation from a current curve of an electric brake motor. The current curve is based on measured current valued. The method further includes determining an electromechanical clamping force. The electromechanical clamping force can be determined based on a correcting current or the current values of the brake motor. The correcting current is determined if the standard deviation exceeds a limit value and motor parameters of the brake motor being determined using the correcting current. The parking brake includes an electromechanical braking mechanism having the electric brake motor configured to generate an electromechanical clamping force.

Abstract: In a general aspect, an apparatus can include an insulated-gate bipolar transistor device (IGBT), a gate driver circuit (driver) coupled with a gate terminal of the IGBT and a low-resistance switch device coupled between an emitter terminal of the IGBT and an electrical ground terminal, the low-resistance switch device being coupled with the electrical ground terminal via a resistor. The apparatus can also include a current sensing circuit coupled with the driver and a current sense signal line coupled with the current sensing circuit and a current sense node, the current sense node being disposed between the low-resistance switch device and the resistor. The apparatus can further include a control circuit configured, when the driver is off, to detect, based on a voltage on the current sense node, when a current through the resistor is above a threshold value and disable the IGBT in response to the detection.

Abstract: A method and apparatus for establishing a wire network for a platform. The apparatus for establishing a wire network for an aircraft comprises a wire manager and a layout manager. The wire manager sorts a plurality of wires for the aircraft into a plurality of bundles based on a plurality of categories established for the plurality of wires with respect to operation of the aircraft. The plurality of categories includes an essential category and the plurality of bundles includes a primary bundle corresponding to the essential category. The layout manager generates a primary layout output for the primary bundle based on an available space within the aircraft. Forming and installing a primary wire harness corresponding to the primary bundle in the aircraft based on the primary layout output independently of a remaining portion of the plurality of bundles improves a build efficiency of the aircraft.

Abstract: The disclosure relates to a method for transferring batteries to a discharged state, a battery system, an inverter, a system for generating an AC voltage, a charging current source and a motor vehicle. The battery system includes a controllable inverter having parallel current branches and having series-connected power switches that are switchable by external control of the controllable inverter. The battery system further includes a controllable charging and disconnecting device having an interrupted current path and having a charging current source between the battery and the controllable inverter.

Abstract: A method and an apparatus for diagnosing a discharge circuit, wherein provision is made for the discharge circuit for discharging an electrical system, in particular for discharging an electrical system of a vehicle capable of being electrically driven. In order to achieve this end, means are provided which partially discharge the electrical system by means of said discharge circuit in a procedural step for diagnosing said discharge circuit.

Abstract: A leakage detection circuit with integrated robustness check provides leakage detection and continuous robustness check capability. A circuit can include a first voltage divider coupled to a chassis ground and a positive terminal of a traction energy storage device (ESD). A second voltage divider, connected in series to the first voltage divider, can be coupled to the chassis ground and a negative terminal of the ESD. A third voltage divider can be coupled to both the positive and negative ESD terminals. A checkproduct based on a voltage detected at the third voltage divider can be compared to a sum VS of voltages detected at first and second voltage dividers to check for a circuit fault. Voltages detected at the first and second voltage dividers, and SOC values, can be used to detect leakage faults, including balanced leakage faults, and a fault response can be performed.

Abstract: A safety switching device for switching on or off a hazardous installation in a failsafe manner has a failsafe control/evaluating unit and a power supply for providing at least one operating voltage for the control/evaluating unit. The power supply has a voltage converter for converting an input voltage into an output voltage of a defined output voltage value. The output voltage corresponds to the operating voltage. The power supply has a fault detector for detecting a fault condition of the voltage converter. The fault detector has a comparator for comparing a currently existent output voltage with a defined reference voltage. The fault detector provides a fault condition signal upon detection of a predetermined deviation from the reference voltage. The power supply also has a switch which disconnects the input voltage of the voltage converter when the fault condition signal is present.

Abstract: A motor driving circuit has a supply line connected to a DC power source, an inverter whose input side is connected to the supply line and whose output side is connected to a motor, a power switch inserted in the supply line for switching the supply line between conducting and cut-off states, a voltage detector for detecting a voltage between the direct-current power source and the power switch, and an insulation resistance detector for first detecting, based on a result of detection by the voltage detector with the power switch in the cut-off state, an insulation resistance on the preceding-stage side of the power switch and subsequently detecting, based on a result of detection by the voltage detector with the power switch in the conducting state, an insulation resistance on the succeeding-stage side of the power switch.

Abstract: Provided is a ground fault detecting device 10 having a ground fault detection part 64 which detects a ground fault of an ungrounded circuit 70 based on a ground fault detection signal St_s of a ground fault signal detection circuit 53 when detection signals S_sig are superimposed on a positive side output part PL and a negative side output part ML by an inverting amplifier 25 connected to the positive side output part PL and an inverting amplifier 35 connected to the negative side output part ML, and having a power supply voltage detection part 66 which detects output voltage of a lithium-ion battery 71 based on a first power supply voltage detection signal Vd1_s of a first power supply voltage detection circuit 52.

Abstract: Briefly, a method and system for testing a cable harness is disclosed. Generally, a cable harness is used to route many electric wires for power, communication, and control. The tester includes a switch system that enables one or more TDR engines to sequentially apply a TDR stimulus to substantially all the wire pairs in the cable harness, and to collect the resulting TDR waveforms. The waveforms are analyzed to determine if the cable harness meets quality standards. In some cases the tester may also perform a continuity, resistance, capacitance, or inductance test on the cable harness. The tester may also measure and use temperature in analyzing the cable harness, or may apply temperature cycling, different or varying atmospheric pressures, vibration, shaking, or shock to the cable harness.