Abstract: A system of tracking load switching operations and fault clearing operations of at least one circuit breaker in a power circuit includes at least one coil antenna sensing changes in a magnetic field around the coil antenna. The changes in the magnetic field induce corresponding changes to a current or voltage in the at least one coil antenna. A receiver is connected to the at least one coil antenna and receives the current or voltage. A computer is connected to the receiver and stores a data stream that corresponds to the changes in magnetic field around the at least one coil antenna. The computer uses the data stream to generate a plurality of characteristic magnetic field waveforms for the at least one circuit breaker. The computer assembles a low frequency magnetic signature for a respective circuit breaker from the characteristic magnetic field waveforms generated for the respective circuit breaker.

Abstract: Embodiments of a power regulation circuit that ameliorates a first and second droop in a power source voltage that powers a processing core are disclosed. The power regulation circuit includes a first droop detector, a second droop detector and a frequency slowdown detection circuit. The first droop detector generates a first droop detection signal in a first detection state in response to detecting a first droop in the power source voltage. The second droop detector generates a second droop detection signal in a second detection state in response to detecting a second droop in the power source voltage. The frequency slowdown detection circuit to generate a frequency slowdown signal in a slowdown state in response to at least one of the first droop detection signal being in the first detection state and the second droop detection signal being in the second detection state.

Abstract: A system and method for use in matching a source to a dynamic impedance electrical load is described. The system may include a zero voltage switching amplifier and a variable signal generator, where the zero voltage switching amplifier is in communication with a resonant load. The system also includes a microcontroller for executing an algorithm that causes the microcontroller to locate a resonant frequency of the resonant load by sampling frequencies by changing a frequency of the variable signal generator and recording sensor data, and then correlating the collected sensor data (minima) to the resonance.

Abstract: An electrical protection system for protecting an electrical circuit comprising a generator and a plurality of electrical apparatuses, each apparatus comprising a chassis. The protection system comprises a first link associated with each apparatus, connecting the chassis of the apparatus to an earth, and comprising a protection resistor. For at least one electrical apparatus operating under direct current, the associated first electrical link comprises a protection capacitor in parallel with the protection resistor. The protection system comprises a second link connecting a neutral point of the generator to the earth.

Abstract: A method for measuring DC bias aging characteristics of a multilayer capacitor includes applying a first poling voltage to a multilayer capacitor including a body having a dielectric layer including a plurality of dielectric grains and an internal electrode disposed alternately with the dielectric layer in a first direction, and an external electrode disposed on the body, maintaining the first poling voltage for a first period of time (t1), applying a DC bias voltage lower than the first poling voltage, maintaining the DC bias voltage for a second period of time (t2), and measuring saturated capacitance after the DC bias voltage is applied.

Abstract: A battery test apparatus for testing a swelling force of a battery housing may include equivalent end plates and a retractable part. An actual battery module may be replaced by the battery test apparatus, eliminating the need for a battery module and accompanying charging and discharging devices and reducing the test cost. Two equivalent end plates may be spaced apart along a first direction to replace a battery module actually in contact with the battery housing along the first direction. The retractable part may be arranged between the two equivalent end plates. The retractable part may compress the two equivalent end plates to make the equivalent end plates compress the battery housing.

Abstract: A magnetic sensor includes: a magnetic detection element; a magnetic layer having a first surface and a second surface located opposite to each other in a reference direction and a side surface connecting the first surface and the second surface; and a surrounding layer that is formed of an organic material or a glass material and that is disposed entirely covering the side surface of the magnetic layer. The magnetic detection element is disposed at a position closer to the first surface than the second surface. The surrounding layer is not provided between the first surface of the magnetic layer and the magnetic detection element in the reference direction.

Abstract: A memory device includes a memory cell array region including a plurality of memory cells, a first test pattern form disposed below a bonding pad and configured to output a first test output signal, a second test pattern form disposed below a non-bonding pad and configured to output a second test output signal, and a damage detection circuit. The damage detection circuit is configured to output a test result signal indicating whether a lower region of the bonding pad has been damaged. The test result signal is based on the number of times a logic level of the first test output signal transitions and the number of times a logic level of the second test output signal transitions.

Abstract: A quantum magnetic field receiving device includes a superconducting quantum interference device (SQUID) or a superconducting quantum interference filter (SQIF) and an electrostatic gating circuit configured to apply electrostatic fields to Josephson Junctions of the SQUID or SQIF.

Abstract: Disclosed is a test for a semiconductor device, including: a test board that has a preparation surface on which a test tray with the semiconductor device mounted to an insert is prepared, and performs a test on the semiconductor device mounted to the insert; and a pressing unit that is positioned to face the preparation surface and presses the insert of the test tray prepared on the preparation surface toward the test board.

Abstract: The subject technology is directed to encoder systems and methods. According to an embodiment, the subject technology provides a magnetic encoder that comprises a first magnet and a second magnet. The first magnet comprises a first pole pair and an opening. The second magnet comprises a second pole pair and is positioned inside the opening. The magnetic encoder further comprises a first sensor that is configured to detect and generate a first signal based on the magnetic flux orientation of the first magnet and a second sensor that is configured to detect and generate a second signal based on the magnetic flux orientation of the second magnet. To achieve this feat, the first magnet and second magnet are magnetized in two separate types of magnetization (e.g., diametrical or axial magnetization) to generate two separate types of magnetic flux orientations that could be detected via the two types of magnetic sensors.

Abstract: A correction method for an estimated state-of-charge (SOC) value of a battery cell 12 estimated by a current integration method, the method including: a charge step of a battery cell 12; a determination step of determining a correction value of the estimated value based on an amount of electricity charged during a period from a start of charge of the battery cell 12 to a decrease in a current value of a charge current to a predetermined threshold I_thr; and a correction step of correcting the estimated value based on the correction value determined in the determination step.

Abstract: The present disclosure relates to a combined position and sensor system comprising a stator part and rotor part, where the stator part has an AC voltage source and the rotor part is powered by inductive coupling between the stator and rotor part, and where the rotor part comprises sensor component(s), and sensor data is transmitted from the rotor part to the stator part via inductive coupling. Furthermore, a signal, which is dependent on the relative position of the stator and rotor part, is based on inductive coupling between elements on the stator and rotor. Additionally, the disclosure relates to an electric vehicle comprising the combined position and sensor system and to a method of regulating power provided by a motor control system for an electric vehicle comprising an electric motor, where the electric vehicle further comprises a combined position and sensor system.

Abstract: An image forming apparatus includes an image forming unit, a fixing unit including a rotary member pair configured to form a first nip portion, a cooling unit configured to form a second nip portion, a drive unit, an obtaining unit configured to obtain information regarding torque of the drive unit, and a control unit. In a state where the recording material is nipped by the first nip portion and the second nip portion, if the information is equal to or less than a threshold value, the control unit is configured to set a conveyance speed of the cooling unit at a first speed larger than a conveyance speed of the fixing unit, and if the information is larger than the threshold value, the control unit is configured to set the conveyance speed of the cooling unit at a second speed smaller than the conveyance speed of the fixing unit.

Abstract: A HEMP enclosure includes a recessed coaxial connector interface. The connector interface is located at the bottom of a metallic tube in the chassis wall that functions as a waveguide below cutoff (WBC). The WBC attenuates the electromagnetic pulse threat signal to a benign level when the transmitter enclosure is not inserted for testing. Internal to the chassis, the connector interface includes an omni-directional antenna. A transmitter enclosure includes a wand to plug the transmitter into the connected interface. The transmitter generates an RF signal at a desired frequency range that is then transmitted via a coaxial cable in the wand to the antenna in the chassis.

Abstract: A radiofrequency detector comprises a squarer circuit comprising first and second branches coupled between a voltage supply and ground, the first branch comprising at least a first squarer transistor receiving a RF sinusoidal input voltage, the first squarer transistor being coupled to the voltage supply through a respective load, the second branch comprising a second reference transistor being coupled to the voltage supply through a respective load, an output voltage being formed at an output node of the first branch and a reference voltage being formed at a respective output node coupled to the load of the second branch, a squared voltage being obtained by a difference voltage of the output voltage and reference voltage, wherein the circuit is configured to feed back to a control electrode of the second reference transistor a feedback signal that is a function of the difference voltage.

Abstract: An image forming apparatus includes an image forming mechanism configured to form a developer image and transfer the formed developer image onto a medium and a fixing unit. The fixing unit includes a fixing member that contacts the medium the developer image is transferred onto, a heat source arranged to supply heat to the fixing member, a first temperature sensor that detects a temperature of a first region, and a second temperature sensor that detects a temperature of a second region of the fixing member. The image forming apparatus includes a controller that outputs information indicating an abnormality of the temperature detected by the first or the second temperature sensor, based on a difference between a first and a second estimation value. The first estimation value is an estimate of a temperature of the first region. The second estimation value is an estimate of a temperature of the second region.

Abstract: An image forming apparatus includes a fixing unit including a tubular film, a pressure roller, and a heater including a heating element. The apparatus further includes a control unit configured to calculate an accumulated electrical energy supplied to a portion of the heating element. The portion of the heating element is located in an area corresponding to a second area of the nip portion. The second area is an area of the nip portion through which the recording material conveyed to the nip portion is not passed. The control unit is configured to determine an operation of heat leveling, which is performed for leveling a heat distribution in the nip portion after the recording material had passed the nip portion, based on the calculated accumulated electrical energy.

Abstract: A detector that is downsized by efficiently applying a high-period alternating magnetic field to a magnetic wire by use of a plurality of magnetic-field generation sources is provided. A detector 400 detects motion of a moving body 410 by use of a power generation sensor 420. The power generation sensor includes a magnetic wire 421 and a coil 422, and the moving body includes a soft magnetic body portion 411 and a plurality of magnetic-field generation sources 412. The power generation sensor is disposed in a vicinity of a trajectory drawn by the magnetic-field generation sources by the motion of the moving body.

Abstract: A marker device embodiment may include separate concentrically-oriented receive and transmit antenna elements coupled to an ASIC which includes electronics to receive an input signal at a first frequency from a transmitter, convert the input signal to a power supply to power the electronic circuit, generate, in response to the input signal, an output signal at a second frequency different from the first frequency, and provide the output signal, via the transmit antenna element, to an above-ground receiver for assistance in determining the location of a buried utility.