Partial Discharge (PD) measurement and characterization provide vital information on insulation condition, different aspects of insulation ageing useful for equipment integrity verification and diagnosis. The work demonstrates standard test methods which employs capture of PD parameters with the aid of discharge detector. This paper investigates on the voltage amplitude at which PD of a specifi...

Resonant tunneling diode (RTD) integration with photo detector (PD) from epi-layer design shows great potential for combining terahertz (THz) RTD electronic source with high speed optical modulation. With an optimized layer structure, the RTD-PD presented in the paper shows high stationary responsivity of 5 A/W at 1310 nm wavelength. High power microwave/mm-wave RTD-PD optoelectronic oscillator...

Partial Discharge is a phenomenon that indicates cables or joints deterioration in an electrical transmission or distribution system. Mechanical damages, voids or contamination in the insulation of cables or joints may contribute to the degradation thus emission of PD is present. The electromagnetic pulses emitted may represent the condition of the insulation. Current PD detector designed using...

As the chip manufacturing process scales down to smaller nodes, random offsets due to the statistical variations of fabrication are undermining performance, especially for analog/mixed signal circuitry. This paper presents a methodology for offset cancellation for the receive path of a programmable logic device (PLD) integrated wide-range transceiver. The transceiver was designed and fabricated...

Aims. With the accumulation of polarization data in gamma-ray burst (GRB) prompt phase, models can be tested. Methods. We predicted time-integrated polarizations 37 GRBs with observation. used their observed spectral parameters to do this. In model, emission mechanism is synchrotron radiation, and magnetic field configuration region was assumed large-scale ordered. Therefore, degrees (PDs) are ...

We describe a type of phase and frequency detector employing both an analog phase detector and a digital phase and frequency detector. The analog and digital detectors are mutually exclusive so that only one of them is active at any given time, resulting in a phase detector with both the broad capture range of digital circuits and the high speed and low noise of analog mixers. The detector has ...

This article presents a low-power fractional- ${N}$ all-digital phase-locked loop (ADPLL) employing reference-waveform oversampling (ROS) phase detector (PD) that increases its effective rate four times, thus leading to lower jitter a...

Nuclear products which were caused by the D + D nuclear fusion reaction were searched in electrolytic cells and in gas phase of Pd + D systems. Measurements of nuclear products were made for gamma-ray, neutron, tritium and helium. To detect neutron, liquid scintillation and He counters were used. For gamma-ray measurement, a NaI detector was used. For tritium concentration measurement in gas ph...