A current measurement device comprising: a shunt resistor; a pair of first and second voltage signal lines connected to the shunt resistor; and a current measurement circuit for measuring a current using a signal by the pair of first and second voltage signal lines. The pair of first and second voltage signal lines are connected to an amplifier circuit with which the current measurement circuit is provided to amplify a voltage signal. A third signal line which is a signal line different from the pair of first and second voltage signal lines and drawn from the shunt resistor is connected to a common line of the current measurement circuit.

A current measurement system is configured to measure an alternating-current (AC) current flowing through a conductor. The AC current has a frequency within a measurement range. The system includes a current sensor and a shunt resistor. The current sensor includes a measurement coil configured to be magnetically coupled to the conductor. The shunt resistor has both ends electrically connected to both ends of the measurement coil, respectively. An output voltage across the both ends of the shunt resistor is saturated at a saturation point in a saturation frequency of the frequency of the AC current. An upper limit value of the measurement range including the frequency is higher than a fundamental frequency of the AC current. The saturation frequency is higher than or equal to the upper limit value. The current measurement system improves sensitivity to frequency components higher than the fundamental frequency of the AC current.

A current detection device including two conductors, a resistor and two detection portions is provided. The resistor is disposed between the two conductors. At least one of the detection portions is a detection terminal including a first terminal portion and a second terminal portion. The first terminal portion includes a first flange and a second flange, the second flange is connected to the second terminal portion, and at least one portion of the second flange is buried into at least one conductor. The first flange is buried into the at least one conductor, a distal end of the first flange does not protrude beyond the second surface, a distance is kept between the distal end of the first flange and the second surface, a gap is defined between the first flange and the second flange, and at least one portion of the gap is filled with a material of the at least one conductor.

A test system for measuring electrical current consumption of a device under test (DUT) includes a capacitor with power and ground terminals; a voltage regulator with input and output terminals; first and second switching elements; and a controller. The voltage regulator generates a DUT operating voltage based on its input voltage. The first switching element is arranged between a direct current (DC) voltage source and the regulator input, and the second switching element is arranged between the DC voltage source and the capacitor. The controller operates the switching elements to charge the capacitor, and to configure the test system for measuring operating current of the DUT using the capacitor as the power source.

A voltage proportional to a sum of currents flowing though first and second coupled inductors is developed across a first capacitor common to first and second series RC networks if the RC networks are time constant-matched to the inductors. The first and second inductors are coupled between a first and second switched drive phase input terminal, respectively, and an apparatus output terminal. The first and second RC networks are coupled in parallel with the first and second inductor, respectively. Inverting and non-inverting inputs of an amplifier are coupled to junctions of third and fourth time constant-matched series RC networks coupled in parallel with the first and second inductors, respectively. The amplifier subtracts voltages sensed at the junctions to generate a difference signal proportional to a magnitude difference of the currents flowing through the inductors.

An arrangement includes a plurality of peripheral units and with a sensor, each of the plurality of peripheral units being provided with a connection for connecting the sensor to a supply voltage, includes a sensor input for connecting the sensor, and also includes a measuring resistor for acquiring a sensor current that represents a signal state, where a redundant acquisition and evaluation of the sensor current or a redundant operation of the sensor is permitted on the plurality of peripheral units via suitable measures.

Provided is a sensor including a first bus bar, a second bus bar, and a shunt resistor including a shunt resistor body part whose one end portion is bonded to the first bus bar and the other end portion is bonded to the second bus bar and a detection terminal extending from the shunt resistor body part.

According to one aspect, embodiments herein provide a Power Distribution Unit (PDU) comprising an input configured to be coupled to a power source and to receive input power, a busbar coupled to the input at a first location on the busbar, the bus bar having a resistance, at least one power outlet coupled to a second location on the busbar via a first output line and configured to provide output power to a load, and a sensing circuit coupled proximate to the first location on the busbar and coupled proximate to the second location on the busbar and configured to determine a voltage drop between the first location and the second location and to calculate a magnitude of an output current provided to the at least one power outlet via the output line based on the voltage drop and the resistance of the busbar.

A method for measuring current includes passing a DC current through the primary side of a transformer and driving the secondary side of the transformer with an AC voltage, wherein the current in the secondary side of the transformer reaches a plateau. The current in the secondary side of the transformer is measured during the plateau, wherein the measured current is proportional to the DC current.

A method for measuring current includes passing a DC current through the primary side of a transformer and driving the secondary side of the transformer with an AC voltage, wherein the current in the secondary side of the transformer reaches a plateau. The current in the secondary side of the transformer is measured during the plateau, wherein the measured current is proportional to the DC current.