Abstract: A battery inspection apparatus capable of self-diagnosing failure is provided. The battery inspection apparatus includes a contact probe, a power supply module, a power cable for providing a path for supplying the power generated by the power supply module to the contact probe, a voltage measuring module, a measuring cable configured to measure a voltage of the contact probe by the voltage measuring module, a switching module configured to selectively connect the voltage measuring module to the power cable or the measuring cable, and a control module configured to determine whether at least one of the contact probe or the power cable is abnormal based on the voltage measurement value of the voltage measuring module according to a connection state of the switching module. A verification device capable of diagnosing failure of the battery inspection apparatus is also provided.

Abstract: Methods and apparatuses for performing optical inspection of varactor diodes in an antenna are disclosed. In some embodiments, the method of testing an antenna having varactor diodes comprises: selecting a plurality of varactor diodes to be placed in a light emitting state; forward biasing the selected varactor diodes to a magnitude at which the selected varactor diodes are to emit light; and detecting one or more faulty varactor diodes of the selected varactor diodes based on their emitted light intensity.

Abstract: A method for preparing a transmission of energy to a vehicle by an inductive charging system, which has a base plate arranged on a primary side of the charging system and a secondary side arranged in or on the vehicle. A first coil is provided in the base plate and a second coil is provided on the secondary side in a vehicle plate. The method includes energizing the second coil provided on the secondary side from a vehicle-based power source and diagnosing the functionality of components arranged on the secondary side of the inductive charging system by evaluating the energization carried out on the secondary side of the inductive charging system. Also disclosed is a device for preparing a transmission of energy to a vehicle by an inductive charging system.

Abstract: Disclosed is a method for monitoring the operation of a drive component. In order to minimize additional hardware complexity, the monitoring method is cared out by a coil that is integrated in a mobile terminal by acquiring an electromagnetic variable of the drive component outside a housing of the drive component by the integrated coil, determining at least one first frequency based on the acquired electromagnetic variable, and determining a first status variable of the drive component from the at least one first frequency.

Abstract: One example method involves generating a calibration control signal that causes an actuator to rotate a first platform at least one complete rotation about an axis. The method also involves receiving encoder output signals. The encoder output signals are indicative of angular positions of the first platform about the axis. The method also involves receiving sensor output signals from an orientation sensor mounted on the first platform. The sensor output signals are indicative of a rate of change to an orientation of the orientation sensor. The method also involves determining calibration data based on given sensor output signals received from the orientation sensor during the at least one complete rotation. The calibration data is for mapping the encoder output signals to calibrated measurements of the angular positions of the first platform about the axis.

Abstract: A voltage tracking circuit includes first, second, third and fourth transistors. The first transistor is in a first well, and includes a first gate, a first drain and a first source coupled to a first voltage supply. The second transistor includes a second gate, a second drain and a second source. The second source is coupled to the first drain. The second gate is coupled to the first gate and a pad voltage terminal. The second body terminal is coupled to a first node. The third transistor includes a third gate, a third drain and a third source. The fourth transistor includes a fourth gate, a fourth drain and a fourth source. The fourth drain is coupled to the third source. The fourth source is coupled to the pad voltage terminal. The second transistor is in a second well different from the first well, and is separated from the first well in a first direction.

Abstract: The present invention discloses a DC converter valve state detection method based on temporal features of converter terminal currents, including the following steps: collecting three-phase AC currents on a converter valve-side of a DC transmission system; defining a current when the currents of two commutating valves are equal as a base value, greater than the base value as a valve conducting current, and less than the base value as a valve blocking current; constructing a valve conducting state by a relative relationship among amplitudes of the three-phase AC currents, and calculating a time interval of each valve conducting state; comparing time intervals of 6 valve conducting states with a time interval of a valve conducting state in normal operation, and determining whether the 6 valve states are normal according to the result of comparison and locating all abnormal valves. The present invention can reliably detect valve states and locate abnormal valves through sequence detection.

Abstract: A rate of change of current sensor includes two measurement coils, arranged such that the turns of the first and second measurement coils are interleaved. The rate of change of current sensor further comprises two return coils, arranged to progress in an opposite direction to the measurement coils. The coils form loops and progress substantially around a target measurement conductor. This ensures that the two measurement coils both receive the same electrostatic coupling from external conductors which are not the target of the measurement operation. Further, the two measurement coils are arranged such that the first coil and the second coil are, on average, the same distance to the current-carrying conductor of interest.

Abstract: There is provided a laminated sheet with which the electrical inspection of a redistribution layer formed later can be efficiently performed, while the laminated sheet is in the form of a sheet useful for the formation of a redistribution layer. This laminated sheet includes a carrier with a release function; a first electrically conductive film provided on the carrier with the release function; an insulating film provided on the first electrically conductive film; and a second electrically conductive film provided on the insulating film. The second electrically conductive film is used for formation of a redistribution layer, and the first electrically conductive film, the insulating film, and the second electrically conductive film function as a capacitor for performing electrical inspection of the redistribution layer.

Abstract: A first method (100) of providing a secondary reference for subsequent use in evaluating a power measuring accuracy of a wireless power measurement device (60) under test is presented. An inanimate calibration object (50) is subjected (110) to electromagnetic field variations (38) by controlling operating points of a reference wireless power transmitter device (30). Key power absorption parameters (58) of the calibration object (50) resulting from the electromagnetic field variations (38) are generated (120) and stored (130) together with data (57) that defines the operating points in a data storage (52) being associated (54) with the calibration object (50).

Abstract: A capacitance detection apparatus and an electronic device are disclosed. The capacitance detection apparatus includes: a sensing module, a connecting circuit, and a differential detection circuit for detecting changes in capacitance of the sensing module; the sensing module comprises: a substrate, and a first sensing layer and a second sensing layer respectively located on two sides of the substrate; a first sensing unit of the first sensing layer is opposite to a second sensing unit of the second sensing layer, and the first sensing unit covers the second sensing unit; the first sensing unit and the second sensing unit are electrically connected to the differential detection circuit. When a detection object approaches the capacitance detection apparatus, the capacitance of the first sensing unit is influenced by the temperature and the detection object, and the capacitance of the second sensing unit is only influenced by the temperature.

Abstract: An example test system includes packs. The packs include test sockets for testing devices under test (DUTs) and at least some test electronics for performing tests on the DUTs in the test sockets. Different packs are configured to have different configurations. The different configurations include at least different numbers of test sockets arranged at different pitches.

Abstract: A cable sequence detection method and a detection system. A base station antenna includes N ports, an RRU includes M antenna ports and one calibration port, any port i of the base station antenna corresponds to a directional coupling branch Ti, and a switch circuit Ki whose connection and disconnection are controlled by an RCU is disposed on the Ti. The method includes: the RRU sends a detection signal to the base station antenna through antenna port j; the RCU controls the switch circuit Ki to be disconnected and another switch circuit to be connected; the RRU detects whether energy Qi obtained by the Ti is greater than a threshold; and the RRU determines whether the antenna port j of the RRU is connected to the port i of the base station antenna according to whether Qi is greater than the threshold.

Abstract: A measurement arrangement, including a current line, a first measurement location provided on the current line, a second measurement location provided on the current line, and a coolant, wherein the second measurement location is provided at a distance from the first measurement location in order to make it possible to measure a voltage in a measurement section of the current line arising due to a current flowing through the current line, wherein the measurement section is defined between the first measurement location and the second measurement location, and wherein the coolant is of fluid form and at least in areas is in direct contact with the current line in an area between the first measurement location and the second measurement location.

Abstract: In accordance with an embodiment, a method of measuring a load current flowing through a current measurement resistor coupled between a source node and a load node includes: measuring a first voltage across a replica resistor when a first end of the replica resistor is coupled to the source node and a second end of the replica resistor is coupled to a reference current source; measuring a second voltage across the replica resistor when the second end of the replica resistor is coupled to the source node and the first end of the replica resistor is coupled to the reference current source; measure a third voltage across the current sensing resistor; and calculating a corrected current measurement of the load current based on the measured first voltage, the measured second voltage and the measured third voltage.

Abstract: The disclosure relates to a measuring device for measuring a physical variable. The measuring device has a converter, which is designed to convert an input variable present at a measurement input, into a measurement signal and to provide the same as an output variable. The measuring device comprises a processing unit, which is configured to process the output variable of the converter, and a signal generator, which is designed to generate a test signal on the basis of a specification which test signal corresponds to an output variable of the converter to an input variable of the converter corresponding to the specification. The processing unit can be connected via a switching element either to an output of the converter or to an output of the signal generator. The disclosure further relates to a method for testing a measuring device.

Abstract: An electronic assembly has a host wafer having a first circuit including wafer transistors and passive, non-transistor devices. Chiplets have a second circuit including at least one radio frequency (RF) transistor device. Electrical interconnects are between the chiplets and wafer. The electrical interconnects electrically connect the first circuit to the second circuits. Oscillators that have the wafer transistor, the RF transistor and the electrical interconnects produce a signal for built-in self-test circuits for testing an assembly design of the electronic assembly and speeds of the RF chiplet transistors.

Abstract: An apparatus for testing a package-on-package type semiconductor package includes an upper test socket on which an upper package is mounted, the upper test socket being mounted on a pusher and connected to the lower package; a lower test socket mounted on a tester and connected to the lower package; and an adsorption pad coupled to the pusher and configured to adsorb and pressurize the lower package using a vacuum pressure, wherein the adsorption pad comprises a body part having a vacuum pressure passage formed therein; and an adsorption part having an adsorption hole corresponding to the vacuum pressure passage, and the body part is attached on a central portion of an upper surface of the adsorption part and an outer oil overflow-preventing part configured to trap silicon oil eluted from the body part is formed at an outer periphery the adsorption part.

Abstract: A three-phase power meter can monitor power on both 3-wire and 4-wire power lines. The power meter measures at least two voltages between phase conductors of the power line, and at least one voltage between a phase conductor and a neutral conductor of the power line when the neutral conductor is available. Using at least some of the measured voltages, the power meter can then operate in a first mode when coupled to a 3-wire power line to determine power on the power line based on the measured voltages, or operate in a second mode when coupled to a 4-wire power line to determine power on the power line based on the measured voltages.

Abstract: An apparatus for thermal control of a device under test (DUT) includes a cooling structure operable to provide cooling, the cooling structure operable to inlet cooling material via an inlet port thereof and operable to outlet cooling material via an outlet port thereof, a variable thermal conductance material (VTCM) layer disposed on a surface of the cooling structure, and a heater layer operable to generate heat based on an electronic control, and wherein the VTCM layer is operable to transfer cooling from the cooling structure to the heater layer. A thermal interface material layer is disposed on the heater layer. The thermal interface material layer is operable to provide thermal coupling and mechanical compliance with respect to the DUT. The apparatus includes a compression mechanism for providing compression to the VTCM layer to vary a thermal conductance of the VTCM layer. The compression mechanism is also for decoupling the VTCM layer from the heater layer.