Results 91 to 100 of about 263,058 (283)

КОМПЕНСАТОР РЕАКТИВНОЇ ПОТУЖНОСТІ З ПЛАВНИМ РЕГУЛЮВАННЯМ

Elektrotehnìka ta Elektroenergetika, 2014
Розглянуто широко використовувані пристрої компенсації реактивної потужності (ПКРМ) – батареї конденсаторів (БК) з тиристорним перемиканням, проведено аналіз їх недоліків: вплив вищих гармонік при несинусоїдальній напрузі мережі, неможливість забезпечити
V. V. Burlaka, S. V. Gulakov, S. K. Podnebennaya, O. S. Savenko   +3 more
doaj   +1 more source

Piezoresistive Monitoring of Carbon Nanomaterial‐Reinforced Epoxy Composites Under Cyclic and Fatigue Loading: A Review

Advanced Engineering Materials, EarlyView.
Carbon nanomaterial‐reinforced epoxy composites exhibit pronounced piezoresistive behavior, enabling intrinsic damage sensing under cyclic and fatigue loading. This review critically compares carbon nanotube and graphene systems, correlating filler content, percolation threshold, and gauge factor with sensing stability and damage evolution.
J. M. Parente, J. Nunes‐Pereira, A. P. Silva, P. N. B. Reis   +3 more
wiley   +1 more source

An electrostatically driven dynamic capacitor [PDF]

Electrostatically driven dynamic capacitor - principles of operation, dynamic capacitor, electrometer, and chronology of ...
Locke, R. R.
core   +1 more source

Linear sawtooth voltage-wave generator employing transistor timing circuit having capacitor-zener diode combination feedback Patent [PDF]

, 1967
Linear sawtooth voltage wave generator with transistor timing circuit having capacitor and zener diode feedback ...
Green, E. D., Woolfson, M. G.
core   +1 more source

STUDY OF STARTING MODES OF SINGLE-PHASE INDUCTION MOTORS WHEN CHANGING THE PARAMETERS OF THE STATOR WINDINGS, PHASE-SHIFTING CAPACITOR AND SUPPLY VOLTAGE

Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska
Single-phase induction motors (SPIM) are widely used in household appliances, agriculture, trade, medicine and other areas where a cheap unregulated electric drive powered by a single-phase AC network is required. They are produced in millions of pieces
Suad Omar Aldaikh, Mohannad O. Rawashdeh, Lina H. Hussienat, Mohamed Qawaqzeh, Oleksiy Iegorov, Olga Iegorova, Mykola Kundenko, Dmytro Danylchenko, Oleksandr Miroshnyk, Taras Shchur   +9 more
doaj   +1 more source

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

Peak holding circuit for extremely narrow pulses [PDF]

, 1975
An improved pulse stretching circuit comprising: a high speed wide-band amplifier connected in a fast charge integrator configuration; a holding circuit including a capacitor connected in parallel with a discharging network which employs a resistor and ...
Oneill, R. W.
core   +1 more source

Enhanced Dielectric Properties of In + Ta Co-Doped TiO₂ Ceramics Synthesized via a Green Egg White Route: Low-Temperature Sintering and Microstructural Insights

Sci
Giant dielectric oxides are attractive for next-generation capacitors and related applications, but their practical use is limited by high loss tangent (tanδ), strong temperature dependence of dielectric permittivity (ε′), and the need for energy ...
Unchista Wongpratat, Nutthakritta Phromviyo, Jurimart Wongsricha, Sirion Srilarueang, Narong Chanlek, Atchara Khamkongkaeo, Prasit Thongbai   +6 more
doaj   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

On‐Demand Activation of Thin Alginate Shell Encapsulated Volatile Liquid for Untethered Pneumatic Soft Actuation

Advanced Engineering Materials, EarlyView.
Phase‐changing liquids enable untethered pneumatic actuation in soft robotics but suffer from volatility and storage challenges. This work reports a simple method to encapsulate Novec 7000 within micron‐thin alginate shells via in situ injection and ionic crosslinking.
Rayan A. M. Basodan, Jack Keddie, Byoungyoul Park, Hyun‐Joong Chung   +3 more
wiley   +1 more source