Frontiers

Development of a repetitive traumatic brain injury risk function based on real-world accident reconstruction and wavelet packet energy analysis

Existing evaluation criteria for pedestrian head impact injuries focus only on single impacts, with less attention given to repetitive traumatic brain injury (rTBI), which is common in motor vehicle ...
Frontiers

Frequency domain estimation method of the characteristic period of the P wave of earthquakes

1 Laboratory Electrical Measurements, Department of Electrical Measurements, “Gheorghe Asachi” Technical University of Iași, Iași, Romania 2 Laboratory Energy Utilization, Department of Energy ...
IEEE

Detection for Axial Displacement Fault of Winding in Autotransformer Based on Dynamic Frequency Division of FRA and HHO-RF

Abstract: To address the issue that traditional Frequency Response Analysis (FRA) methods are primarily used for conventional transformers and cannot accurately identify common axial displacement ...
EDN

Simple low-pass filters tunable with a single potentiometer

A scheme of simple band-pass RC- and LR- filters on operational amplifiers containing only one capacitor or inductor and 3 resistors is proposed. A comparison is made of the amplitude-frequency ...
EDN

Spectrum Analysis – Amplitude and Frequency Modulation

Modulation is the act of translating some low-frequency or baseband signal (voice, music, and data) to a higher frequency. Why do we modulate signals? There are at least two reasons: to allow the ...