Results 71 to 80 of about 8,131,726 (133)

Extraction of intrinsic frequency response of p-i-n photodiodes

open access: yes, 2005
This letter presents a new method for extracting the intrinsic frequency response of a p-i-n photodiode (PD) from the measured frequency response of the PD at different bias voltages.
Zhu NH   +3 more
core  

Cortisol response and subjective sleep disturbance after low frequency noise exposure

open access: yes, 2004
A previous experimental study showed that the cortisol response upon awakening was reduced following nights with low-frequency noise exposure. This study comprised a larger number of subjects and an extended period of acclimatisation nights. In total, 26
Agge, A.   +3 more
core   +1 more source

Structural damage detection method using frequency response functions

open access: yes, 2014
Structural damage detection using measured dynamic data for pattern recognition is a promising approach. These pattern recognition techniques utilize artificial neural networks and genetic algorithm to match pattern features. In this study, an artificial
Chan, Tommy H.T.   +2 more
core   +1 more source

A Comparative Study of Moisture and Temperature Effect on the Frequency Dielectric Response Behaviour of Pressboard Immersed in Natural Ester and Mineral Oil

open access: yes, 2011
It is important to investigate the dielectric behaviour of natural ester-paper insulation as the number of transformer choosing natural ester as its insulation oil is increasing.
Liao, R, Hao, J, Yang, L, Ma, Z, Chen, G
core   +1 more source

Accuracy Performance of Open-Core Inductive Voltage Transformers at Higher Frequencies

open access: yesEnergies
The new revision of the main instrument transformer standard, IEC 61869-1:2023, premiered requirements for the performance of instrument transformers in terms of transfer accuracy at higher frequencies.
Josip Ivankić   +3 more
doaj   +1 more source

METHOD OF DYNAMIC EXPRESSION OF UNCERTAINTY OF MEASUREMENT

open access: yesПриборы и методы измерений, 2015
The way of expressing the dynamic uncertainty of measurement that allows using the spectral function of the input signal and the frequency response of the measurement tools used to assess the uncertainty in its dynamic operation.
O. M. Vasilevskyi
doaj  

Investigating the impacts of renewable energy generators and energy storage systems on power system frequency response [PDF]

open access: yes, 2016
High level of intermittent renewable generation such as PV plants and wind farms will require distributed storage systems to meet the power system frequency operation standards.
Zhang, Shengqi
core  

Inertia Energy-Based Required Capacity Calculation of BESS for Achieving Carbon Neutrality in Korean Power System

open access: yesEnergies
Frequency response performance in power systems is becoming vulnerable due to the transition toward the higher penetration of renewable energy such as achieving carbon neutrality.
Dong-Ju Chae, Kyung Soo Kook
doaj   +1 more source

Frequency Response of MAPbI3 Perovskites for Photodetection Application

open access: yesAdvanced Electronic Materials
The frequency response of the photocurrent (Iph) generated in perovskite photodetectors is a crucial issue in imaging or telecommunication applications, although it is briefly discussed in the literature.
Sandra Soriano‐Díaz   +5 more
doaj   +1 more source

Derivation of transformer winding equivalent circuit by employing the transfer function obtained from frequency response analysis data

open access: yesIET Electric Power Applications
Precisely interpreting frequency response analysis (FRA) curves is crucial when investigating mechanical malfunctions in power transformer windings (TWs).
Zhi Zhang
doaj   +1 more source

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