An electrical device includes a sensor unit. The electrical device includes a first surface that is provided with a depression, and a second surface that is provided with a lug, the second surface being orthogonal to the first surface. The sensor unit includes a contact surface that is provided with a projection fitted to the depression, the contact surface being in contact with the first surface, and a hook that is engaged with the lug, the hook extending along the second surface, and the hook being elastically deformable in a direction normal to the second surface.

An electrical device includes a sensor unit. The electrical device includes a first surface that is provided with a depression, and a second surface that is provided with a lug, the second surface being orthogonal to the first surface. The sensor unit includes a contact surface that is provided with a projection fitted to the depression, the contact surface being in contact with the first surface, and a hook that is engaged with the lug, the hook extending along the second surface, and the hook being elastically deformable in a direction normal to the second surface.

A system and a method of monitoring a functional status of a vehicle's electrical powering system is able to make measurements on the vehicle's electrical powering system, to diagnose problems for the vehicle's electrical powering system, and send a warning notification to the vehicle's owner. A retrofit device is electrically coupled to the vehicle's electrical powering system so that the retrofit device is able to periodically make voltage readings. The retrofit device stores and analyzes those voltage readings so that the retrofit device is able to predict any malfunctions or failure that may occur for the vehicle's electrical power system. If retrofit device does predict a malfunction or failure in the vehicle's electrical powering system, then the retrofit device would output a warning notification either through the retrofit device itself or another external computing device.

Provided is a current measuring device for measuring current, including a conductor adapted to pass current therethrough, at least a pair of voltage sensing terminals arranged apart from each other on the conductor in the current flowing direction, and a substrate to which the voltage sensing terminals are connected. The substrate is long in the current flowing direction, and connection portion of the substrate that are connected to the voltage sensing terminals are arranged closer to one end side of the substrate in the lengthwise direction.

Circuit board comprising a printed circuit comprising phase conductors, each of which is arranged so as to be connected to one phase of a multiphase line, the circuit board further comprising a rectifier bridge comprising phase diodes that are mounted on one and the same face of the printed circuit, the phase diodes comprising, for each phase conductor, one pair of phase diodes comprising a first phase diode having an anode that is connected to said phase conductor and a second phase diode having a cathode that is connected to said phase conductor, the pairs of phase diodes lying in succession along a positioning axis on the face of the printed circuit, the first phase diode and the second phase diode of each pair of phase diodes being positioned in parallel but inverted with respect to each other.

One example includes a superconducting current control system. The system includes an inductive coupler comprising a load inductor and a control inductor. The inductive coupler can be configured to inductively provide a control current from the control inductor to a superconducting circuit device based on a load current being provided through the load inductor. The system also includes a current control element comprising a superconducting quantum interference device (SQUID) array comprising a plurality of SQUIDs. The current control element can be coupled to the inductive coupler to control an amplitude of the load current through the load inductor, and thus to control an amplitude of the control current to the superconducting circuit device.

A voltmeter probe has a metal probe tip projecting from an elongated insulating handle. The handle has a longitudinal axis and a radially projecting finger guard with an inner diameter and an outer diameter. A barrier covers the terminal. The barrier has an aperture configured to provide access for the probe tip to be inserted through the barrier into contact with the terminal, including access for the finger guard to be inserted through the barrier. The aperture has dimensions of length and width, including no width that is not less than the outer diameter of the finger guard.

A voltmeter probe has a metal probe tip projecting from an elongated insulating handle. The handle has a longitudinal axis and a radially projecting finger guard with an inner diameter and an outer diameter. A barrier covers the terminal. The barrier has an aperture configured to provide access for the probe tip to be inserted through the barrier into contact with the terminal, including access for the finger guard to be inserted through the barrier. The aperture has dimensions of length and width, including no width that is not less than the outer diameter of the finger guard.

A readout circuit for resistive and capacitive sensors includes a first input coupled to a reference resistor in a first mode of operation and coupled to a resistive sensor in a second mode of operation; a second input coupled to a capacitive sensor in the first mode of operation and coupled to a reference capacitor in the second mode of operation; and an output for providing a capacitive sensor data stream in the first mode of operation and for providing a resistive sensor data stream in the second mode of operation.

A shunt resistor, at least a part of which has a resistive element with pre-set resistivity, is configured to bridge between two electrodes and detect a current value of a current flowing between the electrodes by detecting a voltage drop in the resistive element. The shunt resistor includes two connecting parts affixed to the electrodes via a conductive adhesive, respectively, and the connecting parts electrically connected to the affixed electrodes, a bridging part bridging between the connecting parts by being extended from one of the connecting parts to the other one of the connecting parts, and two bonding wires used to detect a voltage drop in the resistive element. The two bonding wires are extracted parallel to an extension direction of the bridging part to a same direction.