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It is necessary to research live working on UHV electrode line, so as to support DC UHV maintenance. As the electrode line of Zhengzhou converter station for example, the ground faults overvoltage on BP and GR modes were calculated. The maximum switching overvoltage was 288kV under the condition of live working. It was determined by the grounding fault of high end YY converter valves. The switching...
A brain-computer interface (BCI) system provides a convenient means of communication between the human brain and a computer, which is applied not only to healthy people but also for people that suffer from motor neuron diseases (MNDs). Motor imagery (MI) is one well-known basis for designing Electroencephalography (EEG)-based real-life BCI systems. However, EEG signals are often contaminated with...
Single-walled carbon nanotubes (SWNTs) have been synthesized by an arc discharge method using asphalt and petroleum coke as carbon source. The morphology and structure of SWNT products synthesized with Fe as catalyst were characterized by scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), Raman spectroscopy and energy dispersive X-ray spectroscopy (EDX)....
Since organic materials are easily damaged, failure analysis of electronic devices on flexible substrate using practice FA techniques is hard to procure. However, worse uniformity of organic thin film and high driving voltage may result in failures seldom discovered in conventional Si-based device. This paper aims to analyze the failures of organic thin-film transistors (OTFTs) by the techniques established...
An innovative design of high sensitivity capacitive microphone is described in this paper. The condenser microphone is made by micro-electro-mechanical systems (MEMS) fabrication technology. The advantages of MEMS microphone are small size and low cost. Besides, surface mount technology (SMT) compatible is an important reason for application. Basic structures of the silicon condenser microphone include...
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