Abstract: The present disclosure provides a high-frequency magnetoimpedance testing apparatus and method. A testing platform in the apparatus is arranged within a Helmholtz coil and connected to a modulating electric current source and a high-frequency impedance analyzer, respectively; the Helmholtz coil is connected to a DC power source; a processor is connected to the high-frequency impedance analyzer and the DC power source separately; the testing platform includes a first double-sided copper-clad plate, and mode transition switches and connection terminals that are arranged on the first double-sided copper-clad plate; one end of the first double-sided copper-clad plate is connected to the high-frequency impedance analyzer, while the other end of the same is connected to a load; the mode transition switches are connected to the modulating electric current source.

Abstract: Embodiments of the present disclosure relate to a monitoring circuit and a semiconductor device, and particularly, to a monitoring circuit including an oscillation circuit configured to generate an oscillation signal having a rising characteristic or a falling characteristic according to a threshold voltage level and a counter configured to count the number of rises or the number of falls of the oscillation signal, and a semiconductor device including the monitoring circuit.

Abstract: An integrated circuit chip is attached to a support that includes first conductive elements. First conductive pads are located on the integrated circuit chip and are electrically coupled to the first conductive elements by conductive wires. The integrated circuit chip further includes a conductive track. A switch circuit is provided to selectively electrically connect each first conductive pad to the conductive track. To test the conductive wires, a group of first conductive pads are connected by their respective switch circuits to the conductive track and current flow between corresponding first conductive elements is measured.

Abstract: A method and apparatus for enhancing the sensitivity of an oscillator circuit functioning, in use, to sense changes in the inductance of inductive elements and/or the capacitance of capacitive elements coupled to said oscillator circuit. The oscillator circuit is coupled to a nonlinear resonator for generating a comb of frequencies in response to a drive frequency generated by the oscillator circuit, the comb of frequencies having at least a portion of at least one tooth for which an absolute value of the first derivative of the drive frequency with respect to said comb frequency is less than 1.0, comparing an output of the nonlinear resonator with an output of a reference oscillator for detecting changes in the drive signal of the oscillator circuit as enhanced by the slope of the at least a portion of at least one tooth for which the absolute value of the first derivative of the drive frequency with respect to said comb frequency is less than 1.0.

Abstract: A multi-layer electrode of a capacitive pressure sensor is manufactured by roll to roll printing a conductive layer onto a polymer layer and forming a mutual capacitance sensor layer of the capacitive pressure sensor, co-extruding a conductive polymer layer and a foam dielectric layer and forming a coextruded layer of the capacitive pressure sensor, and pressure rolling the mutual capacitance sensor layer and the coextruded layer together and forming the multi-layer electrode. The conductive polymer layer includes between about 2 wt. % to about 15 wt. % graphene and between about 0.01 wt. % and 5 wt. % of the carbon nanotubes. Also, the conductive polymer layer has a flexural modulus equal to or greater than 5,000 MPa and an electrical resistivity less than or equal to 10 Ohm/mm3, and the polymer layer and/or the conductive polymer layer is formed from recycled polyethylene terephthalate.

Abstract: A real-time power monitoring method executable by an electronic device, comprising: performing an ADC calibration operation to a voltage of a first battery of the electronic device; calculating and forming a diagonal line for the first battery; determining whether the comparison result between a gain and an offset and an optimum gain and an optimum offset is located with a preset error range; if the comparison result is located with the preset error range, determining that the voltage calibration for the first battery is successful; and, if the comparison result is located outside the preset error range, determining that the voltage calibration for the first battery is unsuccessful, analyzing and fixing the first battery and for re-performing the ADC calibration to the first battery.

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 device is dynamically isolated via a broadband switch that includes a plurality of cascade elements in series, wherein each cascade element comprises a first set of SQUIDs in series, a matching capacitor, and a second set of SQUIDs in series. The broadband switch is set to a passing state via flux bias lines during programming and readout of the device and set to a suppression state during device's calculation to reduce operation errors at the device. A device is electrically isolated from high-frequencies via an unbiased broadband switch. A device is coupled to a tunable thermal bath that includes a broadband switch.

Abstract: An actuator assembly comprises: a rotatable shaft, a magnet mounted to the rotatable shaft, non-magnet material positioned between the magnet and the shaft, a rotary sensor configured to be responsive to rotation of the magnet for generating a signal, and a housing comprising a magnetic shield surrounding at least a part of the rotary sensor and at least a part of the magnet mounted to the shaft to shield the sensor and the magnet from an external magnetic field. The actuator assembly further comprises a magnet holder fixing the magnet to the shaft. The magnetic shield encompasses the magnetic flux from the magnet to the rotary sensor and also shields the rotary sensor from any external magnetic field such as stray field or magnetic field from the outside of the housing. The non-magnetic material may reduce leakage magnetic flux from the magnet to the shaft.

Abstract: A test circuit includes an oscillator configured to generate an oscillation signal, a device-under-test (DUT) configured to output an AC signal based on the oscillation signal, a first detection circuit configured to generate a first DC voltage having a first value based on the oscillation signal, and a second detection circuit configured to generate a second DC voltage having a second value based on the AC signal.

Abstract: The sharpening system for cutter blades for cutting flexible materials in automatic cutting machines comprises at least one sharpening element, and it also comprises a first sharpening module that includes at least one first sharpening element, and a second sharpening module that includes at least one second sharpening element. It provides a sharpening system that offers an integral and simple solution to current sharpening systems by incorporating an active sharpening system in the guide plate, either in the rotary area or on the outside, or symmetrically in the upper part of the lower body of the cutting head, interchangeably.

Abstract: A test method for a system on chip, the test method including: receiving a system on chip including a plurality of blocks; booting up the system on chip; storing input values that are input to each of the plurality of blocks, while booting up the system on chip; and performing a test on a first block among the plurality of blocks, wherein performing the test on the first block includes: disabling components of each of the plurality of blocks except the first block, and inputting a first input value to the first block to initialize the first block, wherein the first input value is one of the stored input values that was input to the first block while booting-up the system on chip.

Abstract: A device for measuring a moisture content in soil according to an aspect of the present invention comprises: a conductive wire structure which can be inserted into soil, includes a first and a second conductive wire, and is formed to have a predetermined structure, the first and the second conductive wire being insulatively coated and extending in parallel to and adjacent to each other; a capacitance measurement circuit for measuring the capacitance between the first and the second conductive wire by using an alternating current power source; and a moisture content calculation unit for calculating a moisture content of the soil by using the measured capacitance.

Abstract: The present disclosure relates to a capacitor bank controller that automatically determines the size of a capacitor bank using wireless current sensors. The capacitor bank controller determines a first capacitor bank size estimate using voltage and current measurements from when the capacitor bank is open and when the capacitor bank is closed a first time. The capacitor bank controller determines a second capacitor bank size estimate by using voltage measurements and current measurements from when the capacitor bank is open and when the capacitor bank is closed a second time. The capacitor bank controller determines a filtered capacitor bank size estimate based on the first capacitor bank estimate and the second capacitor bank estimate and controls operation of the capacitor bank based on the filtered capacitor bank size estimate.

Abstract: A driver device includes: a voltage terminal; a ground terminal; an output terminal; a first nMOS power transistor having a drain electrically connected to the voltage terminal, a source electrically connected to the output terminal, and a gate; an overvoltage protection circuit configured to limit a gate-to-source voltage of the first nMOS power transistor in a normal operating mode for the driver device; a pulldown circuit configured to force the first nMOS power transistor off in a stress test mode for the driver device; and a blocking circuit configured to block current flow from the output terminal to the ground terminal through the overvoltage protection circuit and the pulldown circuit in the stress test mode. A method of stress testing the driver device is also described.

Abstract: A self-test system for PCIe and a method thereof are disclosed. In the system, a first circuit interconnect card and a second circuit interconnect card are inserted into CEM slots, respectively, and the first circuit interconnect card and the second circuit interconnect card are electrically connected to each other through a FFC, the central processing unit generates and provides differential signals to the first circuit interconnect card and the second circuit interconnect card; the first circuit interconnect card or the second circuit interconnect card provide differential signals to the second circuit interconnect card or the first circuit interconnect card through the first FFC interface and the second FFC interface, respectively, and the second circuit interconnect card or the first circuit interconnect card provides the differential signals to a central processing unit, so as to implement self-check for PCIe.

Abstract: The present disclosure relates to self-test circuitry for a system that includes one or more current control subsystems, each current control subsystem having a load terminal for coupling the current control subsystem to a load. The self-test circuitry comprises: a signal path associated with each current control subsystem, each signal path configured to selectively couple a measurement node to the load terminal of the current control subsystem, wherein the measurement node is common to all of the signal paths; voltage detection circuitry; and test voltage source circuitry configured to provide a test voltage to the measurement node. The voltage detection circuitry is operable to output a signal indicative of a fault condition if a voltage detected at the measurement node differs from the test voltage when the measurement node is coupled to the load terminal.

Abstract: A method for sharpening cutting knives carried by a cutter drum in a housing of an agricultural vehicle includes: rotating the cutter drum while keeping a sharpening door closed so an overpressure is created inside the housing, the sharpening door shielding a sharpening stone from the cutting knives while creating the overpressure; opening a transition door of the housing below the cutter drum to eject crop material through the open transition door; opening the sharpening door to expose the cutting knives to the sharpening stone and closing the transition door; grinding one or more of the cutting knives with the exposed sharpening stone; and closing the sharpening door to shield the sharpening stone from the cutting knives after grinding.

Abstract: A low voltage system and method for servicing welding equipment including a service tool that may provide a low voltage power source to the welding equipment, enabling the welding equipment to be tested in a low voltage mode of operation. The service tool may also run various test sequences on the welding equipment operating in a low voltage mode of operation to troubleshoot and diagnose any issues with the circuitry of the welding equipment.

Abstract: Systems and methods for measurement and management are disclosed that provide complex measurements cost-effectively at very high accuracy. These methods and systems in some cases achieve measurement accuracy exceeding the accuracy of the reference standards they rely on, and eliminate expensive and disadvantageous recalibration procedures. The accurate measurements are integrated with management functions, applying the measurement data to meet objectives of the integrated system and workflow goals of its user. The disclosed systems and methods comprise an explicit or expressly represented model both of themselves and of candidate external systems to be measured and managed. The models may be configured and reconfigured by the owner-user through either local or remote means. The system intelligently reconfigures itself to adapt dynamically to the conditions of measurement and the user's and system's goals at each moment.