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How to check a capacitor with a Fluke 789?

Tantalum capacitor

Electrolytic capacitor

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Open access•Journal Article•DOI Characteristic Investigation of External Parameters for Fault Diagnosis Reference Model Input of DC Electrolytic Capacitor Jong-Chan Park, Jin-Geun Shon - Show less +1 more 01 Dec 2012-The Transactions of the Korean Institute of Electrical Engineers 2 Citations	Analysis results show that the proposed electrolytic capacitor parameter estimation technique can be applied to reference signal of capacitor diagnosis systems successfully.
Journal Article•DOI Uniform distribution of low content BaTiO3 nanoparticles in poly(vinylidene fluoride) nanocomposite: toward high dielectric breakdown strength and energy storage density Yafang Hou, Yuan Deng, Yao Wang, Hongli Gao - Show less +3 more 21 Aug 2015-RSC Advances 54 Citations	The finding based on this research provides a low-cost method to achieve high performance in capacitor.
Journal Article•DOI Double-layer capacitors composed of interconnected silver particles and with a high-frequency response Dmitri A. Brevnov, Tim S. Olson - Show less +1 more 05 Jan 2006-Electrochimica Acta 29 Citations	The described capacitor could find applications for special electronic circuits where a high-frequency response is needed.
Journal Article•DOI HSP90, a capacitor of behavioral variation. Hsiu-Cheng Hung, Steve A. Kay, Frank Weber - Show less +2 more 01 Jun 2009-Journal of Biological Rhythms 21 Citations	The results show that HSP90 is a potent capacitor of behavioral variation, analogous to its role in morphology.
Proceedings Article•DOI An online technique for condition monitoring of capacitor in PV system Waseem Ahmad, Abhinav Arya, Sandeep Anand - Show less +2 more 17 Mar 2015 12 Citations	This technique allows reliable prediction of capacitor life as compared to existing techniques.
Proceedings Article•DOI Electrospun Nano-Fibrous Polymer Films with Barium Titanate Nanoparticles for Embedded Capacitor Applications Björn Carlberg, J. Norberg, Johan Liu - Show less +2 more 25 Jun 2007 10 Citations	The study is of experimental character and demonstrates a novel technique for manufacturing of embedded capacitor dielectrics.
Open access•Journal Article•DOI Realization of a smart electrolytic capacitor circuit Pascal Venet, F. Perisse, M.H. El-Husseini, Gérard Rojat - Show less +3 more 07 Aug 2002-IEEE Industry Applications Magazine 158 Citations	Thus, the capacitor deterioration can be diagnosed.
Open access•Journal Article•DOI Physics Based Degradation Models for Electrolytic Capacitor Prognostics under Thermal Overstress Conditions Chetan S. Kulkarni, Gautam Biswas, Jose R. Celaya, Kai Goebel - Show less +3 more 23 Oct 2020 20 Citations	This work represents a first step toward combining data driven and physics-based approaches for modeling capacitor degradation.

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What an capacitor is?

A capacitor is an electronic device used to store electric charge by utilizing two conductors separated by an insulating material, known as a dielectric. This passive component can store energy similar to batteries and is crucial in various electronic and electrical systems. Capacitors have different types based on the materials and construction techniques used, each offering unique properties. The capacitance of a capacitor depends on the geometry of the electrodes and the dielectric constant of the material. By altering the dielectric material, the capacitance of a capacitor can be increased, allowing it to store and release charge quickly. Capacitors play a vital role in providing power in electronic devices and systems, making them essential components in modern technology.Why are internal voids less relevant or less dangerous according to this study?

Internal voids are considered less relevant or less dangerous in certain studies due to various reasons. In the context of cross wedge rolling (CWR) and polymeric insulators, internal voids are highlighted as problematic due to electric field distortion and partial discharges, which accelerate material degradation. However, in the study of high-frequency voltage distortions on partial discharges, the impact of voids was evaluated, showing that voids created artificially in insulation materials may not always lead to significant partial discharge development. Additionally, research on basin insulators in GIS found that void characteristics, such as diameter and height, influence partial discharge behavior, but may not always result in severe consequences. Therefore, the relevance and danger of internal voids depend on the specific application and the material properties involved.What is the current state of ADC compensation research and what are the main unsolved problems?

Current research in ADC compensation focuses on innovative techniques to address inherent challenges like capacitor mismatch and analog signal path errors. Techniques like Dynamic Element Matching (DEM)and backpropagation-based compensationhave shown promising results in improving ADC performance. However, challenges persist, such as the need for adaptive background compensation to mitigate errors caused by process variations in CMOS implementations, the impact of time-interleaved ADC (TI-ADC) mismatches on receiver performance, and the nonlinear distortion induced by TI-ADC structures in full-duplex transceivers. Unsolved problems include achieving high manufacturing yield in the presence of process variations, maintaining robustness and convergence speed in compensation techniques, and effectively mitigating ADC imperfections to ensure optimal system performance.What is starter cell in this publication?

In the publications provided, a starter cell is described in different contexts. In one instance, a starter cell is designed for plant growth, featuring openings for seeding and root passage, along with strategically placed ridges to guide root development and prevent twisting. Another mention of a starter cell refers to its role in a circuit, where it is part of a system that couples and decouples a power supply input to a supply capacitor based on the switching status of the circuit. Additionally, a different publication discusses a starter cell used in a fuel cell system, where part of the fuel is converted into hydrogen gas to enhance starting performance, especially at low temperatures. These varied applications highlight the diverse functionalities of starter cells in different fields.How to caluclate the natural frequency of an RLC series circuit?

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The piezoelectric coefficient of BCZT ceramic varies based on the loading conditions. BCZT ceramic exhibits a piezoelectric coefficient of approximately 577 pC/N. On the other hand, PVDF, when incorporated into piezoelectric composites, shows a piezoelectric charge coefficient (d33) of around 26-27 pC/N and a piezoelectric voltage coefficient (g33) of 16.0 × 10−3 V·m/N when combined with BZT ceramic. Furthermore, the addition of BCZT nanowires into a PVDF-TrFE matrix enhances the piezoelectric properties, with a composite containing 15 wt % BCZT nanowires achieving a high energy harvesting figure of merit of 5.3 × 10–12 m2/N. These findings highlight the superior piezoelectric performance of BCZT ceramic compared to PVDF under different loading conditions, emphasizing the potential for BCZT-based composites in energy harvesting and sensor applications.How does temperature effect the conductivity of polyester polymers?

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The study of nanostructures using Density Functional Theory (DFT) with Quantum ESPRESSO has revealed significant insights into the electronic and optical properties of materials. DFT calculations have been employed to investigate the structural, electronic, and optical properties of materials like silicon and titanium dioxide. These studies have focused on determining key parameters such as band gaps, density of states, and optical properties, providing valuable information on the behavior of nanostructures at the quantum level. The research has highlighted the importance of accurate modeling techniques, such as the use of hybrid functionals, to achieve reliable predictions of band gaps and optical properties in nanostructures. Additionally, the confinement energy and quantum confinement effects in nanostructures have been explored, shedding light on the size- and potential-dependence of these phenomena.Why increment of epoxy layers improve tensile properties of bamboo in different salinity level in water?

The increment of epoxy layers improves the tensile properties of bamboo fibers in different salinity levels in water due to enhanced compatibility and reinforcement effects. The incorporation of cellulose nanofibers (CNF) into epoxy composites enhances mechanical properties and reduces water absorption, leading to improved thermal stability. Similarly, the addition of nanoclay in bamboo-epoxy composites increases tensile and flexural strength, impact resistance, water resistance, and thermal stability. Moreover, the use of chemically modified bamboo fibers in epoxy composites results in better compatibility, improved thermal resistance, and enhanced mechanical properties. Additionally, the alkali treatment of bamboo fibers reduces water absorption and enhances the tensile strength of composites.What's the key characteristics of field-plate dielectric that affect the TDDB of GaN-HEMTs?

The key characteristics of the field-plate dielectric that significantly impact the Time-Dependent Dielectric Breakdown (TDDB) of GaN-HEMTs include the stress level and composition of the dielectric film. Stress variations in the SiN field-plate dielectric film, ranging from compressive to tensile, influence isolation leakage and gate leakage current in AlGaN/GaN HEMTs. Additionally, the incorporation of a SiO2 pocket around the field plate edge in GaN-HEMTs results in a substantial reduction in electric field intensity, carrier temperature, and self-heating, leading to improved device performance and reliability. Furthermore, optimized field plate structures, such as T-gate AlGaN/GaN HEMTs with dual discrete field plates, demonstrate enhanced breakdown characteristics and current collapse suppression, contributing to improved TDDB behavior in GaN-HEMTs.How to prepare PANI tio2 composite for dssc application?

To prepare PANI/TiO2 composites for DSSC applications, various methods can be employed based on the research findings. One approach involves in-situ polymerization of PANI with TiO2 nanoparticles. Another method includes the preparation of doped PANI with ZnO-TiO2 nanoparticles through in-situ polymerization, enhancing the structural properties and crystallinity of the composite. Additionally, the casting method can be utilized to fabricate PANI/PMMA-TiO2 nanocomposites, where the TiO2 nanoparticles contribute to improved thermal stability and optical properties of the blend. Furthermore, the sol-gel technique can be employed to create PANI/Sn+2/TiO2 nanocomposites, demonstrating enhanced electrical conductivity and homogenous distribution of nanomaterial within the polymer matrix. These methods offer promising routes for developing efficient PANI/TiO2 composites for DSSC applications.