A current sensing system includes a pre-calibrated busbar, a voltage sensor, a temperature sensor and a controller. The pre-calibrated busbar has a known resistance, a known variation in resistance with respect to temperature and known dimensions. The voltage sensor detects a difference in voltage between a first location and a second location on the pre-calibrated busbar. The temperature sensor detects an ambient temperature of the pre-calibrated busbar. The controller determines a resistance of the busbar between the first location and the second location based on the known resistance, known variation in resistance, known dimensions and the ambient temperature. The controller additionally determines a current flowing through the pre-calibrated busbar based on the difference in voltage and the determined resistance. The current sensing system has numerous applications including using the determined current to control an operating condition of a solid state circuit breaker or a solid state power controller.

A voltage detection probe includes an electrode configured to detect a voltage applied to a wire, and a clip portion freely attachable to and detachable from the wire. The clip portion has a fitting concave portion into which the wire is to be fitted, the clip portion being elastically deformable to widen an opening of the fitting concave portion. The clip portion is configured to retain, by an elastic force, the wire fitted through the opening into the fitting concave portion to cause the electrode to be disposed along an outer peripheral surface of the wire.

An initiator monitoring and actuating system includes a first power supply selectively electrically connectable to a charge initiator. The first power supply provides a current lower than an activation current of the initiator. A second power supply is selectively electrically connectable to the charge initiator. The second power supply provides a current of at least the activation current. Switches are selectively operable to connect the second power supply to a test circuit operable to measure a current generated by the second power supply. The switches are selectively operable to connect the second power supply to the charge initiator. A current sensor is operable to measure current through the test circuit and operable to measure current from the first power supply when the first power supply is connected to the charge initiator.

A wireless power transfer system includes a wireless power transfer device configured to determine a magnetic field, from among a plurality of directionally different potential magnetic fields that the wireless power transfer device is configured to generate, that has, at a receiver coil of an electronic device, a direction aligned with the receiver coil.

a permanent magnet synchronous motor diagnostic device includes: a negative-sequence current calculator that calculates a negative-sequence current, based on magnitudes of a plurality of phase currents flowing through a permanent magnet synchronous motor that rotates a load; and a deterioration diagnoser that diagnoses deterioration of a plain bearing supporting the permanent magnet synchronous motor, based on the negative-sequence current.

A particle-accelerator diagnostic technology capable of evaluating extraction efficiency of charged particles in a short cycle is provided.

A diagnostic device for a particle accelerator includes: a first receiver configured to receive a first detection signal from a first detector that detects a first current value generated by movement of charged particles in a circular accelerator, the first detection signal being outputted as a signal corresponding to the first current value; a second receiver configured to receive a second detection signal from a second detector that detects a second current value generated by movement of charged particles extracted from the circular accelerator into a beam transport system, the second detection signal being outputted as a signal corresponding to the second current value; and a calculator configured to calculate an extraction efficiency of charged particles based on the first and second detection signals.

A current detection device includes: a first conductor providing a part of a current path between a first inverter and a first rotary electric machine; a second conductor providing a part of a current path between a second inverter and a second rotary electric machine; a third conductor providing a part of a current path between a DC power supply and a converter; and first to third elements respectively arranged to face the first to third conductors. Each of the first to third elements is configured to detect a magnetic flux generated by an electric current flowing through a corresponding conductor in a coreless manner. A maximum value of the electric current in the second conductor is smaller than maximum values of the electric current in the first and third conductors. The second conductor is arranged between the first conductor and the third conductor in a predetermined direction.

A method for estimating resistances of a circuit having a plurality of resistances comprising a first resistance and a second resistance may include applying a first bias voltage across the circuit and measuring a first voltage at a common node between the first resistance and the second resistance in order to determine a mathematical relationship between the first resistance and the second resistance, applying a second bias voltage across the circuit and a third resistance in parallel with the circuit and measuring a second voltage at the common node between the first resistance and the second resistance in order to determine a mathematical relationship between the third resistance and at least one of the first resistance and the second resistance, and based on at least the measurement of the first voltage and the measurement of the second voltage, determining the first resistance and the second resistance as a function of the third resistance.

A device includes a control circuit, a scope circuit, and a time-to-current converter. The control circuit is configured to receive a voltage signal from a voltage-controlled oscillator, delay the voltage signal for a delay time to generate a first control signal, and to generate a second control signal according to the first control signal and the voltage signal. The scope circuit is configured to generate a first current signal in response to the second control signal and the voltage signal. The time-to-current converter is configured generate a second current signal according to the first control signal, the voltage signal, a first switch signal, and a test control signal.

An information providing device includes: a reception unit configured to receive current location information on a transportable power supply device from the transportable power supply device that supplies power to an electric apparatus detachably connected thereto; an information generation unit configured to generate use place information indicating a place of use of the transportable power supply device based on the received current location information; and a transmission unit configured to transmit the use place information to a service provider's terminal. The reception unit receives information on the electric apparatus connected to the transportable power supply device from the transportable power supply device. The use place information includes information on a type of the electric apparatus connected to the transportable power supply device.