Abstract: A magnetic field sensor for measuring a direct current includes a transducer formed of coils with superparamagnetic core in series; an excitation module generating an excitation current at an excitation frequency, via a midpoint coil, an excitation voltage generator and an excitation impedance. An analysis module includes an analysis impedance coupled to the midpoint coil, and an analyzer that analyzes the current passing through the analysis impedance to extract a component at an analysis frequency equal to an even multiple of the excitation frequency. The excitation impedance forms with the superparamagnetic coils a first series RLC circuit with a resonance frequency, which is substantially equal to the excitation frequency, and a second series RLC-type circuit with an analysis resonance frequency, which is substantially equal to the analysis frequency.

Abstract: An abnormal detection circuit is provided. The abnormal detection circuit includes a conversion circuit, a voltage detection circuit, and a warning circuit. The conversion circuit receives a three-phase alternating current (AC) power and converts the three-phase AC power into a driving power. The voltage detection circuit detects each phase of the three-phase AC power. When a voltage value of at least one phase AC power of the three-phase AC power is abnormal, the voltage detection circuit uses the driving power to output at least one control signal corresponding to the abnormality. The warning circuit is driven by receiving the driving power and outputs at least one warning signal corresponding to the abnormality in response to the at least one control signal.

Abstract: A sensor assembly includes an electrode extending along a longitudinal axis and a tubular section extending along the longitudinal axis and at least partially surrounding the electrode such that the tubular section is radially spaced from the electrode, the tubular section including a first layer made of an electrically insulating material and having a first length, a second layer made of an electrically conductive material disposed on an inner surface of the first layer and having a second length, and a third layer made of an of electrically conductive material disposed on an outer surface of the first layer and having a third length. The sensor assembly also includes a mass of dielectric material at least partially enclosing the electrode and the tubular section. The mass of dielectric insulating material fills through openings in the tubular section, and the second length and the third length are coextensive.

Abstract: Apparatus and associated methods relate to a Source Terminal Replication Compensation Circuit for simulating an accurate fraction of a load current. In an illustrative example, a Source Terminal Replication Compensation Circuit (STRCC) may be connected to a motor driving circuit. The STRCC, for example, may include a simulation transistor configured to have a simulated structure of a main transistor in a motor driving circuit. The STRCC may include, for example, a disturbance rejection module (DRM). The DRM may be connected to a source terminal of the sense transistor, and a source terminal of the main transistor. When the DRM is connected to a current sensing resistor, a sense current is generated as a predetermined fraction of a load current of the motor driving circuit, wherein the predetermined fraction is less than 1%. Various embodiments may advantageously reduce heat dissipations at the current sensor resistor.

Abstract: A measuring device facilitates equipment calibration. A measuring device for measuring noise contained in equipment having a prescribed resistance value is provided with a first voltage-dividing circuit connected to a direct-current power source, a second voltage-dividing circuit connected in parallel with the first voltage-dividing circuit, and a measuring unit which measures a first voltage-divided voltage output from the first voltage-dividing circuit, and a second voltage-divided voltage output from the second voltage-dividing circuit, a calculating unit which calculates the difference between the measured first voltage-divided voltage and second voltage-divided voltage, and an output unit which outputs the calculated result, wherein: the first voltage-dividing circuit outputs the first voltage-divided voltage from the equipment and a first resistor, connected in series.

Abstract: A capacitive voltage sensor assembly includes a first electrode extending along a longitudinal axis, a tubular section surrounding a portion of the first electrode and positioned radially outward from the longitudinal axis and the first electrode, the tubular section including an insulating layer, an inner conductive layer, and an outer conductive layer, and a mass of dielectric insulating material at least partially enclosing the first electrode and the tubular section. The mass of dielectric insulating material fills through openings formed in the tubular section.

Abstract: In some aspects of the present disclosure, a power detection system is disclosed. In some aspects, the power detection system includes a constant-transconductance (gm) reference generator circuit receiving a power supply voltage. In some embodiments, the constant-gm reference generator circuit includes a first current mirror to provide a first reference voltage and a second current mirror to provide a second reference voltage. In some embodiments, the constant-gm reference generator circuit includes a power detection circuit coupled to the first current mirror to receive the first reference voltage. In some embodiments, the power detection circuit is coupled to the second current mirror to receive the second reference voltage. In some embodiments, the power detection is operated to receive the power supply voltage. In some embodiments, the power detection circuit is operated to provide an output voltage having one of two logic states at least based on the second reference voltage and the power supply voltage.

Abstract: An integrated switching device in which a contactor unit which is capable of controlling a continuity state of an electric circuit, a blocking unit which is capable of cutting a contactor and blocking a current when abnormality is generated in the contactor or a current having a size exceeding a permitted current range of the contactor is generated, and a current measuring unit which is capable of measuring a current by using shunt resistor are integrated into one device, thereby performing various functions only with one device.

Abstract: A current detecting device includes a sense resistor through which a sense current corresponding to a consumption current supplied to a load flows, and an A/D converter configured to perform A/D conversion on a voltage drop generated by the sense current flowing through the sense resistor to detect the consumption current. A resistance value of the sense resistor is variably provided.

Abstract: The invention relates to an assembly of a T-shaped connector (1) comprising a line input (4), a line output (5) and a measuring socket (2), wherein a measuring device (3), in particular an electrical voltage sensor, is arranged in the measuring socket (2), wherein the measuring device (3) comprises a coupling element (6) for connecting the measuring device (3) to the measuring socket (2), as well as a capacitor assembly with two electrodes (7, 8) located opposite one another, wherein the first electrode (7) is arranged on the coupling element (6) and wherein the second electrode (8) is arranged on an grounding element (9), wherein the measuring socket (2) has a receiving area (10) with a receiving area depth (10?) and wherein the measuring device (3) has an insertion area (11) with an insertion area length (11?), wherein the insertion area depth (10?) is smaller than or equal to the insertion area length (11?), and wherein the second electrode (8) extends into the insertion area (10) of the measuring socket (

Abstract: A related interference wave presentation device includes a class specifying processer circuitry configured to specify a class to which a reference interference wave, which is a referenced interference wave, belongs, using a learned model generated by machine learning of sample data including interference waves to specify a class to which an interference wave belongs based on feature values of the interference wave, a related interference wave information generator configured to retrieve the sample data based on the class to which the reference interference wave belongs and generate related interference wave information which is information about a related interference wave; and a presentation controller configured to perform control to present the related interference wave information in part or in whole.

Abstract: The present disclosure relates to a voltage measuring method, a computer device and a storage medium. The method includes: determining, by a voltage measuring device when the voltage measuring device is electrically coupled to a three-phase conductor through a voltage dividing capacitor in the voltage measuring device, a current measured voltage, the measured voltage being determined by measuring a voltage of the voltage dividing capacitor in the voltage measuring device; adjusting the coupling capacitances, and determining, by the voltage measuring device after the adjustment of the coupling capacitances, a current measured voltage; and determining, based on the measured voltage by the voltage measuring device before the adjustment of the coupling capacitances and the measured voltage by the voltage measuring device after the adjustment of the coupling capacitances, a voltage of a phase conductor of the three-phase conductor to be measured.

Abstract: Disclosed embodiments include systems and methods for additively manufacturing (e.g., by “printing” or the like) a bend sensor as a 2D structure that can then be configured into a 3D or stacked structure. Further disclosed embodiments include bend sensors with foldable sensing regions configurable into a 3D or stacked structure. A differential strain in a sensing region is linearly proportional to the displacement as measured from the endpoints of the sensing region. The differential strain is measurable as a differential change in the capacitance of the sensing regions.

Abstract: The invention relates to a voltage sensor with a high-voltage terminal 5, a signal connection and a ground terminal (7), wherein the voltage sensor (1) comprises a core region (2) with an electrical resistor (3) arranged therein and a capacitor arrangement arranged therein, wherein the capacitor arrangement has a first electrode (4), which is connected to the high-voltage terminal (5), a second electrode (6), which is connected to the signal connection, wherein the first electrode (4) and the second electrode (6) are electrically conductively connected via the electrical resistor (3), and wherein the capacitor arrangement has a third electrode (8), which is connected to the ground terminal (7), wherein the first electrode (4), the second electrode (6) and the third electrode (8) each comprise a plurality of electrically conductive, substantially finger-shaped or rod-shaped modulating elements (9, 9?, 9?) which preferably extend parallel to the longitudinal axis (13) of the voltage sensor.

Abstract: A condition monitoring device for a wind turbine power generating apparatus provided with an auxiliary motor power supply system including a power-supply-side line connected to a power supply and a plurality of auxiliary-motor-side lines diverging from the power-supply-side line and connected to a plurality of auxiliary motors, respectively, comprises: a current measurement device for measuring a current flowing through the power-supply-side line; and a control device for controlling the plurality of auxiliary motors. The control device is configured to, when a generator of the wind turbine power generating apparatus is in a standby state where power generation is stopped at a low wind speed, execute a single sequential operation mode in which each of the plurality of auxiliary motors is singly and sequentially operated. The current measurement device is configured to measure a current flowing through the power-supply-side line during execution of the single sequential operation mode by the control device.

Abstract: An optical fiber winding for measuring current circulating through a conductor. The optical fiber winding includes a first helically wound optical fiber cable and a second helically wound optical fiber cable. The first helically wound optical fiber cable is twisted about its longitudinal axis in a first twist direction, and the second helically wound optical fiber cable is twisted about its longitudinal axis in a second twist direction, the first twist direction being opposite the second twist direction. Each of the first and second helically wound optical fiber cables making contact with one another at multiple locations along their length. Due to the first and second helically wound optical fiber cables making contact with one another and being twisted in opposite directions, counteracting forces exist where the first and second helically wound optical fiber cables contact one another to resist an untwisting.

Abstract: A voltage detection unit includes a voltage detection terminal, a housing including a terminal accommodating concave and a cover to be attached to the housing and to cover the voltage detection terminal accommodated in the terminal accommodating concave. The cover includes an extension piece extending in a first direction. The housing includes an accommodating hole to accommodate the extension piece, and a guide portion including an inclined surface and a guide surface. The inclined surface has a first end in the first direction and a second end and is inclined with respect to the first direction such that the first end is provided closer to the accommodating hole than the second end in a second direction perpendicular to the first direction and being parallel to the housing. The guide surface is continuous with the inclined surface and an inner wall surface of the accommodating hole.

Abstract: A voltage detection unit includes a voltage detection terminal configured to be conductively connected to a detection target, an electric wire conductively connected to the voltage detection terminal and a housing having a plate shape and including a terminal accommodating concave configured to accommodate the voltage detection terminal, an electric wire accommodating concave defined by a first groove side wall, a second groove side wall and a groove bottom surface, and configured to accommodate the electric wire and to guide the electric wire out of the housing and an electric wire restricting portion configured to hold the electric wire between the electric wire restricting portion and the groove bottom surface and to prevent the electric wire from being displaced out of the electric wire accommodating concave.

Abstract: A voltage detection unit includes a voltage detection terminal, an electric wire, a housing including a terminal accommodating concave and an electric wire accommodating concave, and a cover. The cover includes an extension piece extending in a first direction in which the cover is attached to the housing. The housing includes an accommodating hole to accommodate the extension piece. The electric wire accommodating concave includes an inclined surface and a guide surface. The inclined surface is inclined with respect to the first direction such that a first thereof end is provided closer to the accommodating hole than a second end thereof in a second direction perpendicular to the first direction and being parallel to the housing. The guide surface is continuous with the inclined surface and continuous with an inner wall surface of the accommodating hole.

Abstract: A sensor assembly includes a connecting bar extending along a longitudinal axis and a tubular body extending along the longitudinal axis and at least partially surrounding the connecting bar such that the tubular body is radially spaced from the connecting bar. The tubular body includes a support member made of insulating material. The tubular body also includes a first section with an electric field sensor comprising a first layer of electrically conductive material on an inner surface of the support member to detect an electric field produced by the connecting bar. The first section also includes a first electric screen comprising a second layer of electrically conductive material on an outer surface of the support member to shield the electric field sensor from outside electrical interference. A second section disposed adjacent the first section includes a second electric screen. A dielectric material at least partially encloses the tubular body.

Abstract: A system and method for direct and/or active detection and monitoring of civil engineering or other infrastructural structures, and in a preferred embodiment, for hydrocarbon leakage in oil and gas pipelines, storage structures, and/or transportation structures. Particularly, the system and method relate to various nanocomposite sensor coating and data gathering systems. In one embodiment, the apparatus includes a single measurement sensor coating (thin film) sensor. Other embodiments relate to multiple measurement sensor coating systems. The sensor is comprised of either a discrete conductive filament layer, or a single or multiple mesh of interwoven filaments of conductive material in one direction and nonconductive material in a perpendicular direction, as a substrate coated with sensitive coating materials to form a sensor grid. Various embodiments of the sensor coating and their applications are also disclosed.

Abstract: An electric energy meter for a poly-phase electricity network includes a power transformer having a primary side and a secondary side, a first analog front end (AFE) unit is coupled to the secondary side of the power transformer, and a microcontroller coupled to the primary side of the power transformer. The first AFE unit is to be coupled to a first phase of the poly-phase electricity network. The microcontroller is configured to transmit a digitized request signal to, and to receive a measurement signal from, the first AFE unit via the power transformer. More specifically, the first AFE unit, upon receiving the digitized request signal, is to extract information from the digitized request signal.

Abstract: An electrical power generating assembly (20) for a wind turbine (1). The electrical power generating assembly comprises a gearbox (22) comprising a gearbox output shaft, a generator (24) comprising a rotor (32) that is coupled to the gearbox output shaft; and a current measuring module (40) located between the gearbox (22) and the generator (24). The current measuring module (40) comprises: an electrical pickup (42) mounted to the electrical power generating assembly (20), wherein the electrical pickup (42) includes an electrical contact (44) that engages with a slip ring (48) associated with the rotor (32). The current measuring module further comprises: a first current measuring device (50) mounted with respect to the electrical pickup (42) to detect current flowing at least through the electrical pickup; and a second current measuring device (52) mounted with respect to the electrical pickup (42) to detect current flowing through at least a component associated with the gearbox output shaft.

Abstract: A switch-mode power supply and a zero current detector for use therein. A zero current detector includes an input stage and an output stage. The output stage is coupled to the input stage. The output stage includes a detector output terminal, a first transistor, and a second transistor. The first transistor includes an input terminal and a control terminal. The input terminal is coupled to the detector output terminal. The control terminal is coupled to the input stage. The second transistor includes an input terminal, a control terminal, and an output terminal. The input terminal is coupled to the control terminal of the first transistor. The control terminal is coupled to the input terminal of the second transistor. The output terminal is coupled to ground.

Abstract: A semiconductor substrate includes a buried semiconductor layer and semiconductor wells. A device for detecting a possible thinning of the semiconductor substrate via the rear face thereof is formed on and in the semiconductor wells. The device is a non-inverting buffer including an input terminal and an output terminal, the device being powered between a supply terminal and a reference terminal where the buried semiconductor layer provides the supply terminal. A control circuit delivers an input signal in a first state to the input terminal and outputs a control signal indicating a detection of a thinning of the substrate if a signal generated at the output terminal in response to the input signal is in a second state different from the first state.

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: Disclosed is an optical fiber winding for measuring the current circulating through a conductor. According to one embodiment the optical fiber winding includes a central support core extending in a longitudinal direction, a first optical fiber cable arranged around the central support core, a second optical fiber cable arranged around the central support core, the first and second optical fiber cables extend in a helical manner around the central support core. According to one embodiment the first optical fiber cable is twisted about its longitudinal axis in a first twist direction, and the second optical fiber cable is twisted about its longitudinal axis in a second twist direction, the first twist direction being opposite the second twist direction. Optical fiber-based current measuring equipment is also disclosed.

Abstract: An integrator for use with a current sensor provides a feedback loop reducing drift while maintaining wide bandwidth.

Abstract: An electric meter includes: a plurality of connectors configured to form electrical connections to corresponding plurality of receptacles in an electric meter socket, wherein at least one electrical connection to the plurality of receptacles is formed with a neutral wire; and a plurality of measurement devices configured to measure electrical characteristics of voltage and current waveforms provided to the electric meter from an electric distribution system and a distributed energy resource (DER) device via the plurality of connectors. The neutral wire provides an electrical reference point for measurement of the voltage waveforms.

Abstract: An electric meter socket includes: a first plurality of connection points within the electric meter socket configured to form electrical connections to line voltage wirings of an electric distribution system; a second plurality of connection points within the electric meter socket configured to form electrical connections to output voltage wirings of a DER device; one or more connection points within the electric meter socket configured to form an electrical connection of neutral wires of the electric distribution system, the DER device, and a load; and a plurality of receptacles, each of the plurality of receptacles electrically connected to a corresponding connection point and configured to accept a mating connector of an electric meter.

Abstract: Methods and apparatus for measuring a current difference between at least two primary current paths in a current sensor integrated circuit package. Each primary current path generated a magnetic field which may then be measured by at least one magnetic field sensing element positioned on an integrated circuit die. An output disconnect signal may be provided from the current sensor integrated circuit package when a current difference above a predetermined threshold exists in the two or more current traces.

Abstract: A system for measuring electrical network parameters may include a voltage sensing node of an electrical network with a first clock and a current sensing node of the electrical network with a second clock. At least one of the voltage sensing node and the current sensing node synchronizes the first clock with the second clock. The voltage sensing node samples a voltage signal from a voltage transducer and the current sensing node samples a plurality of current signals from respective current transducers. The voltage sensing node resamples the sampled voltage signal to determine corresponding resampled voltage signals, and the current sensing node resamples each of the sampled current signals to determine corresponding resampled current signals. The voltage sensing node communicates (1) corresponding re-sampled voltage signals and (2) a voltage time stamp based on the synchronized first clock associated with the sampled voltage signal to the current sensing node through a communication link.

Abstract: A voltage divider assembly for a voltage-dividing sensor for sensing a voltage of a MV/HV power conductor in a power network includes a plurality of discrete impedance elements electrically connected in series with each other such as to be operable as a high-voltage cable side of the voltage-dividing sensor and a cable connector for mechanical engagement with a cable plug at an end of a tap cable conducting the voltage of the power conductor to the voltage divider assembly. The cable connector is electrically connected with one discrete impedance element of the plurality of discrete impedance elements.

Abstract: A semiconductor integrated circuit includes a first power line to which a first voltage is continuously applied, a second power line, a power switch cell connected to the first power line and configured to output a second voltage to the second power line according to a first signal, a logic circuit driven by the second voltage applied via the second power line, a first circuit driven by the second voltage applied via the second power line and configured to output a third voltage to logic circuit according to a second signal which is an inverted signal of the first signal, and a second circuit driven by the second voltage applied via the second power line and configured to output a fourth voltage to logic circuit according to a third signal which is an inverted signal of the second signal, the fourth voltage being lower than the third voltage.

Abstract: A system may include a Class-D stage comprising a first high-side switch coupled between a supply voltage and a first output terminal of the Class-D stage, a second high-side switch coupled between the supply voltage and a second output terminal of the Class-D stage, a first low-side switch coupled between a ground voltage and the first output terminal, and a second low-side switch coupled between the ground voltage and the second output terminal. The system may also include current sensing circuitry comprising a sense resistor, such that an output current through a load coupled between the first output terminal and the second output terminal causes a first sense voltage proportional to the output current across the sense resistor.

Abstract: Provided is a current measuring device for measuring current, including a conductor (1) adapted to pass current therethrough, and a circuit board (31) with a wire, the wire being adapted to extract a voltage signal from the conductor, in which the circuit board is disposed upright with respect to the conductor.

Abstract: A current measurement apparatus comprises: a capacitor connected in parallel to a signal terminal of a device under test (DUT); a test pattern generation apparatus generating a test pattern to operate the DUT; and a measurement module connected to one end of the capacitor. The measurement module comprises: an input/output (I/O) buffer increasing or reducing an amount of charges of the capacitor and outputting a signal corresponding to an output logic value according to a voltage of the one end of the capacitor; a time measurer measuring an arrival time which it takes for the voltage of the one end of the capacitor to reach a second voltage from a first voltage; and a controller controlling the i/o buffer and the time measurer to measure the arrival time and controlling such that a value of a current related to an inspection of a DUT is measured using the arrival time.

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed that facilitate multiple modes of converter operation. An example apparatus includes a comparator configured to provide a first trigger signal to initiate a first pulse width modulated signal in a constant-on-time mode for a power converter, an oscillator configured to provide a second trigger signal to initiate a second pulse width modulated signal in a fixed frequency mode for the power converter, and a selector configured to receive a select signal, the selector configured to output the first trigger signal to a pulse width modulated signal generator to initiate the first pulse width modulated signal based on a first state of the select signal, and output the second trigger signal to the pulse width modulated signal generator to initiate the second pulse width modulated signal based on a second state of the select signal.

Abstract: An electronic device includes a casing, a main circuit board, a detachable component and a flexible circuit board. The main circuit board is disposed in the casing. The main circuit board includes a processor and a memory, wherein the memory stores data. The detachable component is disposed in the casing. The flexible circuit board includes a first end portion, a second end portion, a middle portion and a first detection loop, wherein the first detection loop is disposed at the first end portion and the middle portion. The first end portion is electrically connected to the main circuit board and the second end portion is fixed on the detachable component. When the detachable component is detached from the casing, the middle portion breaks, such that the first detection loop is cut off. When the first detection loop is cut off, the processor erases the data stored in the memory.

Abstract: A current sensor including a measurement circuit and an electrical conductor having at least one first measurement path defined by a first pickup contact and a second pick-up contact at which a first voltage can be detected across the first measurement path, a first connection contact for electrically contacting a connection element, a second connection contact for electrically contacting a battery pole terminal, and a current feed contact for electrically contacting a device for providing a calibration current. The first measurement path is in series between the first connection contact and the second connection contact. A calibration current supplied at the current feed contact induces a current density distribution in the first measurement path, which converges with a current density distribution in the first measurement path, induced by a load current of equal current intensity supplied at the first connection contact.

Abstract: In one embodiment, a phase detection circuit includes a current signal input to receive a current signal indicative of a current amplitude of an RF signal and a voltage signal input to receive a voltage signal indicative of a voltage amplitude of the RF signal. A high-pass filter and a low-pass filter are each configured to filter one of (i) the current signal from the current signal input or (ii) the voltage signal from the voltage signal input, wherein the high-pass filter and the low-pass filter collectively cause a substantially 90 degree offset between a phase angle of the current signal and a phase angle of the voltage signal. A phase difference circuit receives the filtered current signal and the filtered voltage signal to determine a phase angle difference between the current signal and the voltage signal.

Abstract: In some examples, an integrated circuit includes a plurality of power modules formed on a substrate, including a first power module located between second and third power modules. The first power module is configured to conduct a load current, and includes a power transistor and first and second sense transistors. The first sense transistor is disposed at a first position between the second power module and a central axis of the first power module, and the second sense transistor is disposed at a second position between the third power module and the central axis. The first sense transistor is configured to conduct a first sense current; and the second sense transistor is configured to conduct a second sense current. The first and second sense transistors are configured to direct the first and second sense currents toward a measurement circuit that is configured to determine a derived sense current indicative of the load current.

Abstract: Configurable meter that can be configured according to a first configuration in which the meter is capable of being connected directly to a phase conductor (40), and according to a second configuration in which the meter is capable of being connected to the phase conductor (40) via a transformer (41), the meter including an upstream current port (2a, 2c, 2e) and a downstream current port (2b, 2d, 2f), a voltage port (3), a circuit breaker (7) that is closed by default, and an access opening through which a conductive element of an adaption module extends when the latter is mounted on the meter, such that, when the adaption module is mounted on the meter, the conductive element opens the circuit breaker while being connected to the voltage port, the meter then being in the second configuration, and when the adaption module (24) is not mounted on the meter, the meter is in the first configuration. Adaption module. System comprising a meter and an adaption module. Method for configuring a meter.

Abstract: Disclosed herein is a method of providing a structure having two electrodes connected by nanowires, exposing the structure to an analyte that can adsorb onto the nanowires, and passing an electrical current through the nanowires to heat the nanowires to desorb the analyte. Also disclosed herein is an apparatus having the above structure; a current source electrically connected to the electrodes, and a detector to detect the analyte.

Abstract: A power receiving coil and a measuring coil are in a power receiving device. The measuring coil is inductively coupled to the power receiving coil. Concentric turns of a wire in the measuring coil are around a common axis. Also around the common axis are concentric turns of a wire in the power receiving coil. At least one of the concentric turns of the wire in the measuring coil is closer to the common axis than each of the concentric turns of the wire in the power receiving coil. A power feeding device receives a control signal from the power receiving device. The control signal instructs the power feeding device to adjust a power level of an electromagnetic wave emission.

Abstract: An automated zooming of a signal waveform by a measurement device is provided. Vertical parameters of a zoom window for zooming a signal waveform are automatically determined. For this purpose, an acquired measurement signal is tracked and the parameters of the zoom window are set based on the tracking of the measurement signal.

Abstract: A power source equipment (PSE) controller exhibiting low standby levels for power over Ethernet (PoE) includes a micro-controller, a detection and classification circuitry coupled to the micro-controller to detect if a powered device (PD) is connected and determine power needed to operate the connected PD, a power control and monitor circuitry coupled to the micro-controller to power the connected PD and to monitor the power consumption of the PD. The detection and classification circuitry, the power control and monitor circuitry can be individually turned off by the micro-controller to minimize standby power, the micro-controller can be put into deep sleep if no PD is detected or can be come out of deep sleep if a PD is detected.

Abstract: A non-contact electric potential meter system to determine voltage between an AC conductor and a reference potential without direct electrical contact to the conductor. A housing provides a shielded measurement region that excludes other conductors and holds power supply means; an AC voltage sensing mechanism includes a conductive sense plate and an electrical connection to the reference potential. Waveform-sensing electronic circuitry obtains an AC voltage waveform induced by capacitive coupling between the conductor and the conductive sense plate. Capacitance-determining electronic circuitry obtains a scaling factor based on the coupling capacitance formed between the conductor and the conductive sense plate. Signal processing electronic circuitry uses the AC voltage waveform and the coupling capacitance-based scaling factor to obtain the voltage between the conductor and the reference potential.

Abstract: A memory device includes a non-volatile memory (NVM) and circuitry. The circuitry is configured to initialize and prepare the NVM for executing memory-access operations for a processor, and to ascertain that no memory-access operations are received from the processor before the NVM is ready, by preventing the processor from bootstrapping during at least part of initialization and preparation of the NVM.

Abstract: An oscillator assembly includes a scribe seal, an oscillator circuit, and a calibration circuit. The oscillator circuit includes an output. The calibration circuit is coupled to the oscillator circuit. The calibration circuit includes a reference frequency terminal, a conductor coupled to the reference frequency terminal, and an oscillator input terminal. The conductor extends to an edge of the oscillator circuit assembly and penetrates the scribe seal. The oscillator input terminal is coupled to the output of the oscillator circuit.