A semiconductor component 150 has a semiconductor layer 1 including a winding wire part 10 and a winding return wire part 50 connected at a terminal end part of the winding wire part 10 and returning from the terminal end part toward a starting end part side, wherein the semiconductor component is disposed so as to surround an object to be measured.

A semiconductor component 150 has a semiconductor layer 1 including a winding wire part 10 and a winding return wire part 50 connected at a terminal end part of the winding wire part 10 and returning from the terminal end part toward a starting end part side, wherein the semiconductor component is disposed so as to surround an object to be measured.

At least one aspect of the disclosure is directed to a power conversion unit (PCU). The PCU includes a power converter circuit, a safety detection circuit including a plurality of known network impedances and a switch having a first end coupled between two of the plurality of network impedances and a second end coupled to an output terminal, and a controller communicatively coupled to the safety detection circuit and the at least one power converter circuit. The controller may be configured to operate the switch, determine one or more voltage values of the safety detection circuit, and calculate an insulation impedance based at least in part on the one or more voltage values, a position of the switch, and the plurality of known network impedances.

At least one aspect of the disclosure is directed to a power conversion unit (PCU). The PCU includes a power converter circuit, a safety detection circuit including a plurality of known network impedances and a switch having a first end coupled between two of the plurality of network impedances and a second end coupled to an output terminal, and a controller communicatively coupled to the safety detection circuit and the at least one power converter circuit. The controller may be configured to operate the switch, determine one or more voltage values of the safety detection circuit, and calculate an insulation impedance based at least in part on the one or more voltage values, a position of the switch, and the plurality of known network impedances.

Systems and methods for measuring direct current (DC) voltage of an insulated conductor (e.g., insulated wire) are provided, without requiring a galvanic connection between the conductor and a test electrode or probe. A non-contact DC voltage measurement device may include a conductive sensor that is mechanically oscillated. The insulated conductor under test serves as a first conductive element or electrode of a coupling capacitor, and the vibrating conductive sensor serves as a second conductive element or electrode of the coupling capacitor. The oscillation of the conductive sensor provides the coupling capacitor with a time-varying capacitance value. The measurement device detects current flowing through the coupling capacitor, and determines the DC voltage in the insulated conductor using the detected current and the time-varying capacitance. The determined DC voltage may be output to a display or transmitted to an external system via a wired or wireless connection.

Systems and methods can be used in connection with a circuit multi-tester including phase rotation-measurement circuitry. A power-testing device comprising a plug and an enclosure with circuitry can be used to display various power characteristics of a receptacle. The plug of the power-testing device can be received into a compatible power receptacle. The reception of the plug into the receptacle can allow for power communication from a power source supplying power to the power receptacle and the power-testing device for power measurement purposes. The power-testing device can include an enclosure with circuitry that can measure phase rotation information and can detect the presence of power on power lines of the receptacle. Based on the detected presence of power and phase rotation information, the power-testing device can output a visual indicator to the technician that represents the presence of the power and phase rotation orientation.

Systems and methods can be used in connection with a circuit multi-tester including phase rotation-measurement circuitry. A power-testing device comprising a plug and an enclosure with circuitry can be used to display various power characteristics of a receptacle. The plug of the power-testing device can be received into a compatible power receptacle. The reception of the plug into the receptacle can allow for power communication from a power source supplying power to the power receptacle and the power-testing device for power measurement purposes. The power-testing device can include an enclosure with circuitry that can measure phase rotation information and can detect the presence of power on power lines of the receptacle. Based on the detected presence of power and phase rotation information, the power-testing device can output a visual indicator to the technician that represents the presence of the power and phase rotation orientation.

In one implementation, a circuit can include a reference pin and an operational amplifier that can include an output pin, an inverting input pin and a non-inverting input pin. The inverting input pin can be electrically coupled to the output pin via a first impedance and to the reference pin via a second impedance. The non-inverting input pin can be electrically coupled to the reference pin via a third impedance and can be configured to receive a detection signal. The reference pin can be configured to receive a detection reference signal associated with the detection signal.

A device for dynamic signal generation and analysis, which combines an arbitrary waveform generator AWG (3) with a digital signal analysis unit DSAU (23). The two units are interfaced by means of a synchronization unit SU (30), which enables a flexible scheme for controlling how the playback of the waveforms is started as well as synchronizing the recording of the results of the digital signal analysis unit synchronously to specific generated waveforms. The various units of the device are synchronous circuits clocked by a common system clock signal. At least one common numerically controlled oscillator NCO (40) is provided for the arbitrary waveform generator AWG (3) and the digital signal analysis unit DSAU (23).

A device for dynamic signal generation and analysis, which combines an arbitrary waveform generator AWG (3) with a digital signal analysis unit DSAU (23). The two units are interfaced by means of a synchronization unit SU (30), which enables a flexible scheme for controlling how the playback of the waveforms is started as well as synchronizing the recording of the results of the digital signal analysis unit synchronously to specific generated waveforms. The various units of the device are synchronous circuits clocked by a common system clock signal. At least one common numerically controlled oscillator NCO (40) is provided for the arbitrary waveform generator AWG (3) and the digital signal analysis unit DSAU (23).