Abstract: In some embodiments, an apparatus includes an automatic integrated circuit (IC) handler having a change kit. The change kit has a plunger moveably disposable onto an automatic test equipment (ATE). In such embodiments, the ATE is configured to receive an integrated circuit having an optical interface. The plunger has a first position and a second position. In such embodiments, the plunger is out of contact with the integrated circuit when the plunger is in the first position. The plunger includes an optical connector operatively coupled to the optical interface of the integrated circuit when the plunger is in the second position.

Abstract: A circuit includes a Wheatstone bridge and a correction circuit operable to correct an output voltage offset of the Wheatstone bridge. The correction circuit includes a supply module configured to supply the Wheatstone bridge with a voltage and output a first current applied to the Wheatstone bridge and output a second current proportional to the first current. A digital/analog current converter outputs a correction current to the outputs of the Wheatstone bridge circuit in response to a digital correction signal and the second current.

Abstract: A system comprises an integrated circuit package, an inductor that is part of a power supply, and a printed circuit board (PCB) having a metal trace disposed directly below the inductor when viewed from a top-down perspective. The integrated circuit package includes a first terminal, a second terminal, and a novel inductor current detection and calibration circuit. The first terminal is coupled to a first end of the metal trace and the second terminal is coupled to a second end of the metal trace. During operation of the power supply, the novel circuit detects an OCP condition whereby an output current of the power supply exceeds an OCP level. The novel circuit detects the OCP condition in part by sensing a voltage across the metal trace. After calibration at room temperature, the novel circuit performs accurate OCP detection over a range of temperatures without using any temperature sensor near inductor.

Abstract: A single chip referenced bridge type magnetic field sensor for high-intensity magnetic field, the sensor comprises a substrate, a reference arm, a sense arm, shielding structures and attenuators. Wherein the reference arms and the sense arms comprise at least two rows/columns of reference element strings and sense element strings which comprise one or more identical electrically interconnected magnetoresistive sense elements; the reference element strings and the sense element strings are mutually interleaved, each reference element string is designed with a shielding structure on top of it, and each sense element string is designed with an attenuator on top of it. The magnetoresistive sensor elements can be AMR, GMR or TMR sensor elements. The shielding structures and attenuators are arrays of long rectangular bars composed of a soft ferromagnetic material, such as permalloy.

Abstract: A current measuring circuit for redundantly measuring electrical current includes a measuring resistor, a magnetic field sensor, and an evaluation circuit on an evaluation circuit board. The evaluation circuit is used to determine electrical current using the measuring resistor. The magnetic field sensor on the evaluation circuit board and the evaluation circuit board are arranged in direct proximity to the measuring resistor such that the magnetic field sensor is configured to detect the magnetic field from the current-carrying resistor. A battery includes the current measuring circuit and a motor vehicle includes the battery.

Abstract: Even with a large ripple voltage superposed on a voltage of a battery cell, the voltage of the battery cell can be measured accurately. In a battery monitoring device, a supply circuit, based on a reference voltage inputted from an assembled battery, generates a driving voltage for driving each of switching elements, of a selection circuit and supplies the driving voltage to the selection circuit. The reference voltage is inputted from the assembled battery to the supply circuit via a detecting filter circuit. As a result, a time constant of a route through which the reference voltage is inputted from the assembled battery to the supply circuit is approximately equal to time constants of detecting filter circuits.

Abstract: An electronic comparison circuit can identify at least three conditions of an input signal received by the electronic comparison circuit. A first one of the at least three conditions occurs when a value of the input signal is less than a first threshold value, a second one of the at least three conditions occurs when a value of the input signal is greater than the first threshold value and less than a second threshold value, and a third one of the at least three conditions occurs when a value of the input signal is greater than the second threshold value. A magnetic field sensor can use the electronic comparison circuit.

Abstract: The disclosure provides a circuit for impedance measurement. The circuit includes an excitation source that generates an excitation signal. A switched resistor network is coupled to the excitation source, and generates an output signal in response to the excitation signal. A sense circuit is coupled to the switched resistor network, and generates a sense signal in response to the output signal. A comparator is coupled to the sense circuit, and generates a clock signal in response to the sense signal. A mixer is coupled to the sense circuit, and multiplies the sense signal and the clock signal to generate a rectified signal. A low pass filter is coupled to the mixer and filters the rectified signal to generate an averaged signal. A processor is coupled to the low pass filter and measures a body impedance from the averaged signal.

Abstract: According to one embodiment, an MRI apparatus includes a first radio communication unit, a second radio communication unit and an image reconstruction unit. The first radio communication unit includes a connecting unit detachably connected to an RF coil device which detects a nuclear magnetic resonance signal emitted from an object. The first radio communication unit acquires the nuclear magnetic resonance signal detected by the RF coil device via the connecting unit, and wirelessly transmits the acquired nuclear magnetic resonance signal. The second radio communication unit receives the nuclear magnetic resonance signal wirelessly transmitted from the first radio communication unit. The image reconstruction unit acquires the nuclear magnetic resonance signal received by the second radio communication unit, and reconstructs image data of the object based on the nuclear magnetic resonance signal.

Abstract: Systems and methods for indicating pH in a subject using a magnetic resonance imaging (MRI) system are provided. The method includes selecting a contrast agent, generating a chemical exchange saturation transfer (CEST) pulse sequence, performing the pulse sequence with the saturating pulse at a first power level, and performing the pulse sequence again with the saturating pulse at a power level different from the first power level. The method also includes generating values indicating pH of the subject, and generating a report indicating the pH using those values.

Abstract: A ground fault detection system based on capacitive sensing suitable for use in detecting a ground fault condition in electronic equipment (such as a PCBA) with a circuit ground electrically isolated from an isolation ground (such as chassis ground). The capacitive sensing system includes a capacitive sensor capacitively coupled to the system isolation ground, and a capacitance/data converter that captures sensor capacitance measurements for conversion to sensor data representative of a ground short. In one embodiment, the capacitive sensor includes a sensor electrode capacitively coupled to the system isolation ground by one of projected capacitance and a floating capacitor (such as 33 pf), and the CDC unit further includes sensor excitation circuitry configured to drive the sensor electrode, such that a sensor capacitance (projected or floating capacitance) is representative of an electrical condition of the system isolation ground.

Abstract: A measurement circuit includes first and second inputs for receiving first and second input signals which vary cyclically with the rotational position of a rotor of an electric motor; a phase detector circuit; and an observer circuit that estimates the frequency and phase of the first and second input signals. The phase detector circuit determines a phase difference between first and second estimated signals with a phase difference dependent on the phase difference indicated by the estimates, the first and second estimated signals varying in quadrature with each other and the first and second input signals by adding a multiplicative combination of the first input signal with the first estimated signal to a multiplicative combination of the second input signal with the second estimated signal to result in a sum signal dependent upon the phase difference, The observer circuit varies the estimates dependent upon the sum signal.

Abstract: In a method to operate a magnetic resonance (MR) system to acquire MR data, an RF excitation pulse is radiated followed by repeated, chronologically sequential implementation of the following steps in order to respectively acquire the MR data of an echo train. A refocusing pulse is radiated, a phase coding gradient is activated, and an additional magnetic field gradient for spatial coding is activated in a direction that is orthogonal to the direction of the phase coding gradient in order to read out the MR data of a k-space line. A k-space line in the k-space center is acquired at a predetermined echo time. A first half of k-space is acquired by entering data into k-space lines of the respective echo train, the data being acquired before the echo time. A second half of k-space is acquired by entering data into k-space lines of the respective echo train, this data having been acquired after the echo time.

Abstract: The present invention relates to an arrangement for providing a testing environment for the testing of test objects. The testing environment includes a first test object receiving apparatus and a second test object receiving apparatus, each of which are configured to receive a test object. The testing environment also includes a connection interface configured to connect the first test object receiving apparatus and the second test object receiving apparatus to the testing environment. In one embodiment, the first test object receiving apparatus has a first external connection interface, and the second test object receiving apparatus has a second external connection interface, wherein said first and second external connection interfaces are configured to be selectively coupled with the connection interface of the testing environment.

Abstract: A method for testing using an automated test equipment (ATE) is disclosed. The method comprises capturing a radio frequency (RF) signal using a digital port on automated test equipment, wherein the RF signal is transmitted from a device under test (DUT) to be tested by the automated test equipment. It also comprises sampling the RF signal at a high sampling rate using a digital channel associated with the digital port. Further, it comprises generating a discrete signal using results from the sampling. Finally, it comprises determining a frequency and amplitude of the RF signal using the discrete signal.

Abstract: Power distribution infrastructure is incrementally deployed and commissioned to enable incremental infrastructure deployment to support incremental changes in computing capacity in a data center, where interaction between infrastructure being commissioned and installed computer systems is mitigated. Power distribution system commissioning includes coupling busway stub segments to a downstream end of the power distribution system and operating load banks, coupled to each busway stub segment, to simulate the power distribution system supporting electrical power consumption by multiple sets of computer systems through the busway stub segments.

Abstract: In this disclosure, a process of imaging a target object using magnetic resonance (MR) includes an MRI scanner scanning the target object using a first transmit RF pulse. A processor associated with the MRI scanner can acquire magnitude and/or phase data associated with a first RF signal produced (or echoed) by the target object responsive to the MRI scan. The processor can determine a second transmit RF pulse for use to scan the target object based on the acquired data and according to a given phase criterion. The phase criterion can be configured to enforce mitigation of a phase distribution estimated based on the acquired data.

Abstract: Methods, apparatus, and other embodiments associated with producing a quantitative parameter map using magnetic resonance fingerprinting (MRF) are described. One example apparatus includes a data store that stores a grouped set of MRF signal evolutions, including a group representative signal and a low-rank representative, a set of logics that collects a received signal evolution from a tissue experiencing nuclear magnetic resonance (NMR) in response to an MRF excitation, a correlation logic that computes a correlation between a portion of the received signal evolution and a portion of a group representative signal, a pruning logic that generates a pruned grouped set, and a matching logic that determines matching quantitative parameters based on the received signal evolution and the low-rank representative.

Abstract: An on-chip millimeter wave power detection circuit comprises a high resistive probe for voltage sensing of millimeter wave signals, the probe comprises a metal line perpendicularly connected to a transmission line, at one end, and further connected to a power root mean square (RMS) detector at the other end; and the RMS detector for measuring a RMS voltage value of the sensed millimeter wave signals, wherein the RMS detector is characterized by a known impedance.

Abstract: A capacitive fingerprint sensor includes an array of capacitive sensing elements, readout circuitry electrically coupled to the array of capacitive sensing elements, a block first digital to analog converter (DAC), at least one second DAC, and at least one summing junction electrically coupled to the readout circuitry, the first DAC, and the at least one second DAC. The readout circuitry is adapted to read out pixel voltages from a group of each block of capacitive sensing elements. The first DAC is adapted to provide a block baseline voltage for each block of capacitive sensing elements. The second DAC is adapted to provide a pixel baseline voltage difference for one capacitive sensing element of each group of each block. The summing junction is adapted to subtract the received block baseline voltage and the received pixel baseline voltage difference from the corresponding pixel voltage of each row of each block.