Abstract: A unified coil assembly for magnetic resonance imaging is disclosed. The coil assembly includes an RF coil element and a shim coil array with a shim coil element. The shim coil element is physically separated or partially separated from the RF coil element. The shim coil element includes a DC current loop having a DC power supply connection to allow DC current to generate a local BO magnetic field. The unified coil array assembly is configured to simultaneously provide an RF mode for at least one of transmit or receive and a direct current mode to generate a local B0 magnetic field for B0 shimming Larger number of shim coils relative to the RF coil element provides superior shimming performance. The mutual inductance between the shim coil element and the RF coil element is minimized by proposed geometrical decoupling methods in order to minimize the RF interaction between the two.

Abstract: According to one embodiment, an electronic circuit includes: a current supply circuit, a detection circuit, a timing generation circuit, a sample hold circuit and a calculation circuit. The current supply circuit supplies a sine wave current for measurement to a gate terminal of a semiconductor switching device. The detection circuit detects a sine wave voltage generated in response to supply of the sine wave current to generate a detection signal. The timing generation circuit counts cycles of the sine wave voltage. The sample hold circuit samples the detection signal at a timing depending on a count value of the timing generation circuit. The calculation circuit calculates a gate resistance of the semiconductor switching device based on the sampled voltage.

Abstract: There is provided a system including a monitoring unit that analyzes, using a sensor, components of a first gas which may include first components and a pre-separation unit disposed upstream of the monitoring unit. The pre-separation unit includes: a first supply line that supplies the first gas to the monitoring unit; a second supply line that supplies a second gas, which includes components obtained by removing the first components from the first gas using a first separator, to the monitoring unit; and an automatic valve station that periodically switches between the first supply line and the second supply line to alternately supply the first gas and the second gas to the monitoring unit.

Abstract: A system for verifying the operation of RF generators and resulting pulse waveforms in semiconductor processes includes a process chamber, a profile sensor, an optical sensor and a controller. A process implemented by the controller of the system for verifying the operation of RF generators and resulting pulse waveforms in semiconductor processes includes generating a pulse profile of a pulse shape of an RF generator under test, selecting a stored, representative profile of an RF generator known to be operating correctly to compare to the profile generated for the RF generator for a same pulse mode, defining a quantitative metric/control limit to identify similarities and/or differences between pulses of same pulse modes between the generated profile of the RF generator and the stored profile, comparing the generated profile and the selected stored profile, and determining if the RF generator under test is operating properly based on the comparison.

Abstract: A high bandwidth differential test probe for measuring a device under test is provided. The test probe comprises a first probe tip arranged at a first coaxial connector relative to a first rotational axis, and a second probe tip arranged at a second coaxial connector relative to a second rotational axis. For adjusting the distance between the first probe tip and the second probe tip, the first coaxial connector is rotatable with respect to the first rotational axis and the second coaxial connector is rotatable with respect to the second rotational axis. Additionally, a tilt angle between the first probe tip and a plane comprising both the first and second rotational axes, and a tilt angle between the second probe tip and the plane, is not equal to zero.

Abstract: A multilayer component is coated with a fluorogenic probe designed to give off florescence when in contact with one or more metals in the multilayer component. The fluorogenic probe is exposed to radiation. The intensity and wavelength of the florescence is measured to determine a porosity of the one or more layers of the multilayer component.

Abstract: A system (10) for power and/or energy consumption metering on an AC powerline network (1) supplying a plurality of channels (C1, C2, . . . , Cn) with a respective electrical load (L1, L2, . . . , Ln), comprising: A central unit (11) connected to the AC powerline network (1), comprising a single central voltmeter (110) supplied by a power supply unit (112); A plurality of clamped-on units (12), distributed over each channel (C1, C2, . . . , Cn) to be measured, each clamped-on unit (12) being clipped around existing cables, and comprising a current transformer (120) in order to measure current values The plurality of clamped-on units (12) are connected to the central unit (11) for data transmission and synchronization, and for power supply by the power supply unit (112).

Abstract: A proximity sensor installed inside a vehicle can include: an outer frame formed of a first non-conductive substance and including a first metal layer; an inner frame formed of a second non-conductive substance, including a second metal layer, and disposed in an interior of the outer frame; a sensor electrode contacting the second metal layer; and a sensor Integrated Circuit (IC) connected to the sensor electrode and configured to detect an approach or a contact of a user's hand. The first metal layer can be connected to the ground (GND) so as to confine a sensing field of the sensor electrode to the interior of the outer frame.

Abstract: A sensing apparatus for characterizing current flow through a conductor includes a plurality of magnetic sensors. In some embodiments, the sensors are grouped in pairs to achieve common mode rejection of signals generated in response to magnetic fields not resulting from current flow through the conductor. Sensors having different levels of sensitivity are used to collect information regarding the magnetic field generated by the current flowing through the conductor, where such information is processed in order to characterize the magnetic field. In some cases the sensors are included on or in flexible material that can be wrapped around the conductor.

Abstract: It is described a contact probe for a testing head of an apparatus for testing electronic devices including a body essentially extended along a longitudinal direction between a contact tip and a contact head, that contact probe comprising at least one multilayer structure, in turn including a superposition of at least one inner layer or core and a first inner coating layer, and an outer coating layer that completely covers the multilayer structure and made of a material having a higher hardness than a material realizing the core.

Abstract: A fixture for testing coaxial connectors for PIM includes: (a) an adapter connector comprising an inner contact; an outer body that circumferentially surrounds and that is spaced from the inner contact, the outer body including an inner ring and an outer ring with a gap therebetween; and a resilient member in electrical contact with the outer body; and (b) a foundation including a fixed sleeve and a biasing member, the biasing member exerting an axial force on the sleeve and the outer body, the biasing member permitting axial and radial adjustment of the outer body and inner contact relative to the sleeve. The gap between the inner and outer rings of the outer body is configured to receive an outer ring of an outer body of a coaxial connector to be tested. The inner ring of the test fixture is located to be radially outward of an inner ring of the outer body of the coaxial connector to be tested.

Abstract: There is provided a method for correcting a relative position between a probe card having a plurality of cantilever-type probes and an object to be inspected having a plurality of electrode pads, including: arranging a first group of cantilever-type probes among the plurality of cantilever-type probes in a first region and a second region; arranging a second group of cantilever-type probes among the plurality of cantilever-type probes in a third region and a fourth region; obtaining needle traces formed on the plurality of electrode pads, which are generated when the first group of cantilever-type probes and the second group of cantilever-type probes that are arranged in the first region, the second region, the third region, and the fourth region, are brought into contact with the plurality of electrode pads; and correcting the relative position between the probe card and the object to be inspected based on the obtained needle traces.

Abstract: Magnetic load cells that measure force and/or torque are constructed from magnets and one or more arrays of magnetic field sensors. The magnetic field sensors are structured in a tight array where the array is attached to a first portion of a frame. The magnets are operated in pairs polarized in opposition to one-another. In particular, pairs of concentric magnets create sharp field boundaries. The magnets are attached to a second portion of the frame with the magnets separated from the array of field sensors by a small gap. The second portion of the frame is free to displace or rotate in relation to the first portion of the frame when a force or torque is applied to it. The displacement results in a measurable differential change in magnetic field reported by the array that can be sampled and processed to relate to the applied force or torque.

Abstract: Various embodiments manage a fuel cell IT grid system to maintain fuel cell temperatures above a threshold temperature. The system may include power modules each including a fuel cell, DC/DC converters each connected to a power module, a DC power bus connected to the DC/DC, IT loads each connected to the DC power bus, a load balancing load connected to the DC power bus, and a control device connected to a first power module. The control device may determine whether a temperature of the first power module exceeds the temperature threshold, determine whether an electrical power output of the power modules exceeds an electrical power demand of the IT loads in response to the temperature exceeding the temperature threshold, and direct excess electrical power output to the load balancing load in response to the electrical power output exceeding the electrical power demand.

Abstract: A die probe including a probe tip operably connected to a first surface of a thin film; a metal trace, wherein a first portion of the metal trace is operably connected to a second surface of the thin film, the second surface of the thin film opposite the first surface of the thin film; and an upper space transformer, wherein a second portion of the metal trace is operably connected to the upper space transformer, wherein a pressurized liquid and/or gas is configured to expand a space between the second surface of the thin film and the upper space transformer.

Abstract: A device is provided. The device includes one or more of a radially-wound coil, a hall-effect sensor, a power source, and a control circuit. The radially-wound coil is configured to produce a first magnetic field in response to a periodic current applied to the coil. The hall-effect sensor includes a sensor output that indicates proximity of a magnet to the hall-effect sensor. The magnet provides a second magnetic field and the sensor output indicates proximity in response to a combination of a strength of the first magnetic field and a strength of the second magnetic field exceeds a trip level. The coil is in fixed proximity to the hall-effect sensor, and the current is configured to control a polarity of the first magnetic field to detect the magnet. The power source is coupled to the hall-effect sensor, and is configured to provide power that alternates between on and off voltages to the hall-effect sensor.

Abstract: An insulation detector for highly accurately detecting or measuring, with a simple configuration, insulation resistance of a load or an apparatus to a ground or a housing and connected to an electric apparatus including one or both of an intra-apparatus capacitor and a battery, the insulation detector including an intra-insulation detector capacitor, a voltage detecting unit that detects a voltage of the intra-insulation detector capacitor, and a current-path forming switch for connecting the ground or the housing, the intra-apparatus capacitor, and the intra-insulation detector capacitor in series and forming a current path including insulation resistance of the electric apparatus. The insulation detector measures the insulation resistance by measuring a time constant of a change in the voltage of the intra-insulation detector capacitor.

Abstract: A method determines a generator system load and/or rotor angle. The generator system has a generator with a generator terminal outputting electrical power generated by the generator, a transformer and a point of common coupling, PCC, terminal. The transformer is between the generator and PCC terminals. The method includes: determining the generator field current; determining the output voltage, the output current and the power factor and/or angle of the output voltage and output current from the generator terminal, and determining the load angle of the generator system, output voltage from the generator terminal, output current from the generator terminal and the power factor and/or angle; and/or determining the output voltage, the output current and the power factor and/or angle of the output voltage and output current, and determining the rotor angle of the generator system, output voltage, output current from the PCC terminal and the power factor and/or angle.

Abstract: Methods and apparatus to determine a position of a rotatable shaft of a motor are disclosed. An example apparatus to determine a position of a rotatable shaft of a motor includes a sensor printed circuit board (PCB) structured to be mounted to a motor, the sensor PCB including a plurality of capacitive sensors, the plurality of capacitive sensors having respective ones of a plurality of capacitances that independently change as a conductor moves relative to the sensor PCB in conjunction with a rotatable shaft of the motor during an operation of the motor, and a controller electrically coupled to the sensor PCB, the controller configured to determine a position of the rotatable shaft based on the plurality of capacitances.

Abstract: A current sensor includes a die and a shunt resistor having a first temperature coefficient and having a first node and a second node fabricated onto the die, wherein the shunt resistor is for passing the current that is to be sensed. A first compensation resistor is fabricated onto the die and is coupled to the first node of the shunt resistor, wherein the first compensation resistor is proximate the shunt resistor and has a temperature coefficient that is similar to the temperature coefficient of the shunt resistor. A second compensation resistor is fabricated onto the die and is coupled to the second node of the shunt resistor, wherein the second compensation resistor is proximate the shunt resistor and has a temperature coefficient that is the close to the temperature coefficient of the shunt resistor.