Abstract: Various embodiments of the invention provide a system and a method for testing one or more devices under test (DUTs) and for checking one or more test setups. Each of the one or more test setups includes a test board having several sockets for receipt of a DUT. A custom hardware interface is used to electrically connect the test board, such as a burn-in board with a test system configuration having multiple modules that can be configured using a computer device and related software to provide customized testing of the DUTs. The system is scalable to accommodate any DUT having any number of channels and to provide customized testing. Results of the testing are sent to the computing device.

Abstract: A capacitance measurement circuit for determining complex electric currents in a multi-channel capacitive sensing device includes a first sensing circuit for selectively connecting one of a plurality of sense electrodes to a common sense node and for connecting a corresponding guard electrode of the sense electrode to a common guard node, and at least a second sensing circuit. A measurement signal voltage source provides an alternating measurement voltage to the common guard node in a remotely controllable manner. A diagnostic signal voltage source provides an alternating diagnostic voltage to the common guard node in a remotely controllable manner. A current measurement circuit is connected with a signal input port to the common sense node and with a reference input port to the output port of the measurement signal voltage source.

Abstract: A magnetic core for a current sensor is provided. The magnetic core comprises a first and a second core part, each of which is formed from a stack made up of a plurality of sheet metal layers. The second core part has a first end piece structured such that some of the sheet metal layers are longer and protrude beyond the remaining, shorter sheet metal layers. The first core part has a second end piece which is structured inversely to the first end piece of the second core part. The first core part and the second core part are joined together at a connection point such that the longer sheet metal layers of the first end piece and the second end piece overlap at the connection point, wherein the overlap takes place at a number of interfaces that is at least two less than the number of sheet metal layers.

Abstract: A method for simple measurement of phase shift between a first clock signal and a second clock signal is described, each clock signal having a period T0. The method includes: feeding the first clock signal into a first input of a mixer; feeding the second clock signal into a second input of the mixer; feeding the output signal of the mixer into a low pass filter; and measuring the output signal of the low pass filter, with the aid of an output voltage that is normalized to operating voltage of the mixer. A circuit for implementing the method includes a mixer and a low pass filter. The mixer includes a first input for feeding in the first clock signal, and a second input for feeding in the second clock signal. The output of the mixer is connected to the input of the low pass filter.

Abstract: We describe a way of detecting delamination of a laminated structure that is heated by DC powered heaters by passing the source and return wires that supply current to the heaters through a toroidal transformer core. Should there be a breakdown in the laminations, current flowing through the heater will flow into the structure, resulting in less current being present in the return wire than in the source wire. The current imbalance between the source and return wires causes the transformer core to saturate. Using the core saturation, caused by the DC current imbalance, the delamination (or imminent delamination) of the laminated structure can be detected.

Abstract: A current transformer includes a first housing including a first handle portion and a first distal portion, a second housing including a second handle portion and a second distal portion, a first core mounted in the first distal portion, a second core mounted in the second distal portion, and a lock attached to the second handle portion at a pivot point, wherein the first housing is rotationally coupled to the second housing about a fulcrum point and the lock is rotatable about the pivot point into a closed position wherein the lock engages the first handle portion and prevents the first handle portion and the second handle portion from rotating towards each other.

Abstract: In a current detection device, a first shield plate is disposed adjacent to a magnetic sensor and a second shield plate is disposed adjacent to the bus bar so that the first and second shield plates sandwich the bus bar and the magnetic sensor in the thickness direction of the bus bar. A plurality of the first shield plates adjacent to the magnetic sensors are an integral part of a cover. At least part of the cover is separated between adjacent two of the first shield plates, and a plurality of the second shield plates disposed adjacent to the bus bars are an integral part of a casing.

Abstract: The subject matter of this specification can be embodied in, among other things, an apparatus having a housing, a first electrical input port, a second electrical input port, at least one trigger output port, and a synchronization check relay arranged at least partly within the housing and in electrical communication with the first electrical input port, the second electrical input ports, and the at least one trigger output port.

Abstract: Provided is a current-sensing circuit that includes a power-supply line providing electrical power to a high side of a load, a high-side field-effect transistor (FET) component between the power-supply line and the high side of the load, and a low-side FET component coupled to a low side of the load. Gate signals continually repeat a cycle that includes: a first part in which the high-side FET component is turned on and the low-side FET component is turned off, and a second part in which the high-side FET component is turned off and the low-side FET component is turned on. In addition, a single transconductance stage is configured to: input signals indicating a voltage drop across whichever one of the high-side FET component or the low-side FET component currently is on, and output a signal indicating a current flow that corresponds to such voltage drop.

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

Abstract: A current sensor includes at least one magnetoelectric conversion element, a conductor that at least partially surrounds the at least one magnetoelectric conversion element in a plan view and through which a measurement current to be measured with the at least one magnetoelectric conversion element flows, an element supporting portion comprised of a semiconductor substrate, and supports the at least one magnetoelectric conversion element and the conductor on a first surface, a signal processing IC that processes a signal that is output from the at least one magnetoelectric conversion element, an encapsulating portion that encapsulates the at least one magnetoelectric conversion element, the conductor, and the signal processing IC, and a pair of first lead terminals that is partially exposed on a side surface of the encapsulating portion and is electrically connected to the conductor, inputs the measurement current to the conductor and outputs the measurement current from the conductor.

Abstract: A measurement method is provided for non-destructive inspection of a magnetic material as an inspection target in a non-magnetic body. The method includes application of a magnetic field from a magnetic field applying unit to the inspection target through a surface of the non-magnetic body, and measurement of a magnetic field from the inspection target with a magnetic sensor on the surface of the non-magnetic body adjacent to the magnetic field applying unit at positions having different distances from the magnetic field applying unit in a first direction away from the magnetic field applying unit. The magnetic field from the inspection target is attenuated with the distances. In the method, first and second measurements are performed with the magnetic field applying unit respectively arranged on one side and on the other side in the first direction relative to the positions where the magnetic sensor performs measurement.

Abstract: A current sensor is configured such that at least one magnetoelectric conversion element, a conductor, and a signal processing IC are encapsulated with an encapsulating portion. The current sensor is comprised of a pair of first lead terminals that is partially exposed on a side surface of the encapsulating portion, is electrically connected to the conductor, inputs a measurement current to the conductor, and outputs the measurement current from the conductor; a metal member that is partially exposed on a side surface of the encapsulating portion and is spaced apart from the conductor; and an element supporting portion that is comprised of a metal plate or a semiconductor substrate, supports the at least one magnetoelectric conversion element and a metal member on a surface on a same side as the first surface, and is spaced apart from the conductor.

Abstract: Apparatus and device for testing within a metal pipe are described. The apparatus includes an exciter for generating an electromagnetic (EM) field for exciting a wall of the metal pipe; an extendable and retractable sensor assembly comprising a plurality of sensor bars arranged in an angled manner with respect to an axis of the pipe for sensing residue EM field on a wall of the pipe; a plurality of guide wheel assemblies for supporting and moving the apparatus along the axis of the pipe; and a control unit for recording sensed data from the sensor assembly.

Abstract: In accordance with 37 C.F.R. § 1.125, a substitute specification has been included in lieu of substitute paragraphs in connection with the present Preliminary Amendment. The substitute specification is submitted in clean form, attached hereto, and is accompanied by a marked-up version showing the changes made to the original specification. The changes have been made in an effort to place the specification in better form for U.S. practice. No new matter has been added by these changes to the specification. Further, the substitute specification includes paragraph numbers to facilitate amendment practice as requested by the U.S. Patent and Trademark Office.

Abstract: In a contact terminal, the first insertion portion includes a first contact portion having a first flat surface along an axial direction, the second insertion portion includes a second contact portion having a second flat surface along the axial direction, the first flat surface and the second flat surface are in contact with each other, the tubular body includes at least one of a first end side notch provided along the axial direction on a peripheral surface of the one end portion in the axial direction of the tubular body and a second end side notch provided along the axial direction on a peripheral surface of the other end portion in the axial direction of the tubular body.

Abstract: In one example, circuitry is formed in a semiconductor die. A magnetic concentrator is formed on a surface of the semiconductor die and over the circuitry. An isolation spacer is placed on a lead frame. The semiconductor die is placed on the isolation spacer, and the magnetic concentrator is aligned to overlap the lead frame. Electrical interconnects are formed between the semiconductor die and the lead frame.

Abstract: There is provided a maintenance apparatus including: an acquisition unit configured to acquire a plurality of test results, for each of a plurality of jigs, in a case where a plurality of devices under measurement, which are different from each other, are sequentially tested via the plurality of jigs; a calculation unit configured to calculate a variation in test results, for each jig, by using the plurality of test results; and a determination unit configured to determine maintenance timing of the jig based on the variation in the test results.

Abstract: Aspects of the subject technology relate to systems, methods, and computer-readable media for accounting for artifacts in pipe measurements made by an electromagnetic pipe inspection tool. Measurements gathered in a plurality of pipes across different depth points are accessed. Initial estimates of an attribute associated with the plurality of pipes are made for each pipe and a total estimate of the attribute for the plurality of pipes as a whole are made across the different depth points. Corresponding initial estimates of the attribute for each pipe are filtered to remove an artifact present in at least one of the corresponding initial estimates while the total estimate is preserved. Corresponding final estimates of the attribute for each pipe are determined based on both the measurements and corresponding filtered initial estimates of the attribute for each pipe. Integrity of each pipe can be determined based on the corresponding final estimates of the attribute.

Abstract: Disclosed herein are devices (100), systems, and methods for testing a circuit (114). A circuit test device (100) includes a housing (102) and a circuit (104) disposed in the housing (102). The circuit (104) includes an electromagnetic field (EMF) sensor (106) and a signal detector (110) coupled to the EMF sensor (106). The circuit test device (100) includes an interface (112) connected to the circuit (104) and extending through the housing (102). The interface (112) is adapted for coupling the circuit (104) to a circuit under test (CUT) (114). The EMF sensor (106) is configured to generate a signal in the presence of a time varying flow of current from the CUT (114) in the circuit (104). The EMF sensor (106) is configured to provide the signal to the signal detector (110).