Results 11 to 20 of about 5,346,507 (336)

SQUARE-WAVE FREQUENCY MODULATION IN MICROWAVE SPECTROSCOPY [PDF]

Radio Physics and Radio Astronomy, 2022
Subject and Purpose. The frequency modulation (FM)combined with lock-in detection, the technique which is used in microwave spectroscopy for enhancing the sensitivity of measurements, as well as the effects due to standing wavesinthe measuring absorption
E. A. Alekseev, V. V. Ilyushin, R. A. Motiyenko   +2 more
doaj   +1 more source

Effects of Spike Voltages Coupling With High dV/dt Square Wave on Dielectric Loss and Electric-Thermal Field of High-Frequency Transformer

IEEE Access, 2021
The insulation of high-frequency transformers (HFTs) has a significant impact on the safety and reliability of high voltage power electronic transformers (PETs).
Weiwang Wang, Jiefeng He, Ying Liu, Xin Wang, Shengtao Li   +4 more
doaj   +1 more source

High Frequency Bipolar Electroporator with Double-Crowbar Circuit for Load-Independent Forming of Nanosecond Pulses

Applied Sciences, 2022
In this work, a novel electroporation system (electroporator) is presented, which is capable of forming high frequency pulses in a broad range of parameters (65 ns–100 µs).
Vitalij Novickij, Gediminas Staigvila, Arūnas Murauskas, Nina Rembialkowska, Julita Kulbacka, Jurij Novickij   +5 more
doaj   +1 more source

Sensorless Control With Switching Frequency Square Wave Voltage Injection for SPMSM With Low Rotor Magnetic Anisotropy

IEEE transactions on power electronics, 2023
High-frequency signal injection sensorless algorithms are widely studied and used for rotor angle estimation in permanent magnet synchronous motor (PMSM) at low speed or standstill.
A. Benevieri, A. Formentini, M. Marchesoni, M. Passalacqua, L. Vaccaro   +4 more
semanticscholar   +1 more source

Non-harmonic response of relativistic particle to driving harmonic force

Revista Brasileira de Ensino de Física, 2023
We consider the properties of one-dimensional oscillations of a relativistic particle under a driving harmonic force. It is found that in the general case the speed oscillations are an infinite sum of odd sinusoidal and even cosinusoidal waves.
Vladimir Ivchenko
doaj   +1 more source

Analytical Aspects of Novel Techniques Derived from Square-Wave Voltammetry

Journal of the Electrochemical Society, 2023
Recently introduced novel voltammetric and chronoamperometric techniques, derived from square-wave voltammetry (SWV), are being studied for their analytical utility.
Dariusz Guziejewski, Sylwia Smarzewska, V. Mirčeski   +2 more
semanticscholar   +1 more source

Robust d-Wave Superconductivity in the Square-Lattice t-J Model. [PDF]

Physical Review Letters, 2021
Unravelling competing orders emergent in doped Mott insulators and their interplay with unconventional superconductivity is one of the major challenges in condensed matter physics.
S. Gong, W. Zhu, D. Sheng
semanticscholar   +1 more source

Implementasi Inverter Berbasis Square Wave dan Sinusoidal PWM Menggunakan Arduino Uno

Rekayasa, 2022
Inverters with square waves and sinusoidal output signal waves have different efficiency values. The difference is very visible, especially when the inverter is used to drive an electric device that uses a motor.
R Dwiki Rachwanto, Saidah Saidah, Amirullah Amirullah   +2 more
doaj   +1 more source

Inspiratory pressure waveform influences time to failure, respiratory muscle fatigue, and metabolism during resistive breathing

Physiological Reports, 2023
Increased ventilatory work beyond working capacity of the respiratory muscles can induce fatigue, resulting in limited respiratory muscle endurance (Tlim).
Mathias Krogh Poulsen, Stephen E. Rees, John Hansen, Andrew J. T. Stevenson, Søren Kjærgaard, Carlo A. Volta, Savino Spadaro, Dan S. Karbing   +7 more
doaj   +1 more source

Numerical Investigation of the Effect of Square and Sinusoidal Waves Vibration Parameters on Heat Sink Forced Convective Heat Transfer Enhancement

Applied Sciences, 2022
Among numerous electronic cooling methods, a vibrating heat sink using sinusoidal wave vibration effectively enhances the heat transfer by disturbing the thermal boundary layer.
Ambagaha Hewage Dona Kalpani Rasangika, Mohammad Shakir Nasif, William Pao, Rafat Al-Waked   +3 more
doaj   +1 more source