نتایج جستجو برای: high frequency transients
تعداد نتایج: 2396479 فیلتر نتایج به سال:
Recent advancements in the field of high speed electronics put increasing pressure on the development of active devices that can operate at increasingly faster rates. However, at the frequency range of several GHz and above, loss and dispersion in the interconnecting transmission lines are dramatically enhanced. The elaborate characterization of such structures then becomes instrumental in the ...
Ultra-low ESR capacitors such as ceramics are highly desirable because they can support fast-changing load transients and also bypass very high frequency noise coming from switching converter power sources, which a linear regulator can not reject. However, using ultra-low ESR capacitors on the output of an LDO regulator requires that specific design changes be implemented to ensure loop stability.
s This paper presents a framework for transients classification using wavelet transform and two specific artificial neural networks, propabilistic neural networks (PNN) and resource allocating neural networks (RAN). One significant feature of wavelet for transients characterization is its timescale two dimensional but compact representation. One distinguishing feature of PNN and RAN is the abil...
The firing pattern displayed by neuronal aggregates is thought to play a key role in cortical development and physiology. In this study, we have employed optical recording of intracellular calcium to monitor activity of multiple neurons simultaneously in primary cortical cultures. With this approach, we have observed spontaneous synchronous calcium transients among adjacent cortical neurons. Th...
A flexible analysis/synthesis tool for transient signals, which is the frequency domain dual to sinusoidal modeling, is presented. This parametric model for transients allows the extension of current sinusoidal and sines+noise models for audio to sines+transients+ noise. The model not only permits the realistic analysis/synthesis of signals with sharp attacks, it also permits a wide range of tr...
In the past, grounding systems usually were modeled by an individual Resistor. This estimation is useful only at low frequencies, while in high frequencies, the inductance of the grounding system plays the main role to identify the phase and amplitude of that. In recent years, as wind farms grow rapidly throughout the world, the grounding system and ground impedance of wind turbine towers under...
a unique high frequency transient overvoltage surge suppressor for the protection of motors and transformers from steep wave-front, short rise-time, high magnitude, spikes, surges and other transient voltages, generated by switching, lightning and other sources. The protective characteristics of ZORC: Eliminates inter-turn insulation failures Extends the life of machine insulation Eliminates mu...
Abstract The coming decades will establish the exploration of gravitational wave (GW) Universe over a broad frequency range by ground and space interferometers. Meanwhile, wide-field, high-cadence sensitive surveys span electromagnetic spectrum from radio all way up to TeV, as well high-energy neutrino window. Among numerous classes transients, ? –ray bursts (GRBs) have direct links with most h...
Dendritic spines commonly receive glutamatergic innervation at postsynaptic densities and compartmentalize calcium influx arising from synaptic signaling. Recently, it was shown that a class of nicotinic acetylcholine receptors containing alpha7 subunits is concentrated on somatic spines emanating from chick ciliary ganglion neurons. The receptors have a high relative calcium permeability and c...
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