scholarly journals Influence of Electrolytes in the Electrical Characteristics of Anodic Films on Tantalum

1981 ◽  
Vol 7 (4) ◽  
pp. 205-210 ◽  
Author(s):  
M. Fernández ◽  
J. Baonza ◽  
J. M. Albella ◽  
J. M. Martínez-Duart
Keyword(s):  
Citric Acid ◽  
Ethylene Glycol ◽  
Organic Acids ◽  
Leakage Current ◽  
High Voltage ◽  
Low Voltage ◽  
Anodic Oxide ◽  
Dielectric Losses ◽  
Electrical Characteristics ◽  
Anodic Films

The electrical characteristics of anodic oxide films formed on tantalum are investigated in anodes oxidized in the standard electrolytes for low-voltage (0.01% H3PO4in water) and high-voltage (same plus ethylene glycol) applications. It is found that small additions (about 0.1%) of certain organic acids such as citric acid to the above electrolytes greatly improves the leakage current, the scintillation voltage and the dielectric losses of tantalum capacitors. Furthermore, the use of these organic acids makes it possible to extend to higher voltages the use of the low-voltage electrolyte, and allows, in the case of the high-voltage electrolyte, a substantial diminution in the ethylene glycol concentration without impairing the characteristics of the resulting capacitors. Finally, the effect of the citric acid and the ethylene glycol in the anodizing electrolytes is discussed.

δ-Nb-doping Effect to The Interface Between IrO2 Top Electrode and Pb(Zr, Ti)O3 by Metal Organic Chemical Vapor Deposition

2004 ◽  
Vol 830 ◽  
Author(s):  
Osamu Matsuura ◽  
Hideki Yamawaki ◽  
Masaki Nakabayashi ◽  
Yoshimasa Horii ◽  
Yoshihiro Sugiyama
Keyword(s):  
Leakage Current ◽  
Low Voltage ◽  
Chemical Vapor ◽  
Doping Effect ◽  
Organic Chemical ◽  
Electrical Characteristics ◽  
Positive Direction ◽  
Metal Organic ◽  
Nb Doping ◽  
Organic Chemical Vapor Deposition

ABSTRACTWe studied the Nb doping effect on the electrical characteristics of MOCVD-PZT capacitors using uniformly Nb-doped Pb(Zr, Ti)O3 (UND-PZT) and δ-Nb-doped PZT (DND-PZT) prepared by MOCVD. The 2Pr for UND-PZT was small and the UND-PZT hysteresis shifted in a positive direction. However, the 2Pr for DND-PZT decreased by only 5.5% and the hysteresis of DND-PZT didn't shift. In addition, the leakage current of DND-PZT decreased by one order at low bias compared to non-doped PZT, because the δ-Nb-doping layer maintains the barrier height, higher than that of none-doped PZT due to defect compensation. As a result, Nb1% DND-PZT was well suited to use Nb doping which decreases leakage current at low voltage and maintains 2Pr.

scholarly journals Reducing leakage current and dielectric losses of electroactive polymers through electro-annealing for high-voltage actuation

RSC Advances ◽  
2019 ◽  
Vol 9 (23) ◽  
pp. 12823-12835 ◽  
Author(s):  
Francesco Pedroli ◽  
Alessio Marrani ◽  
Minh-Quyen Le ◽  
Olivier Sanseau ◽  
Pierre-Jean Cottinet ◽  
...  
Keyword(s):  
Leakage Current ◽  
Electric Fields ◽  
High Voltage ◽  
Electroactive Polymers ◽  
Dielectric Losses ◽  
High Electric Fields ◽  
Very High

The electro-annealed polymer, the E-TH sample, shows a reduction in leakage current of 80% for very high electric fields.

The Influence on Electrical Characteristics of Contact WCu and Ti3SiC2 Material

2012 ◽  
Vol 427 ◽  
pp. 185-190 ◽  
Author(s):  
Zhan Kai Li ◽  
Jing Qin Wang ◽  
Fu Min Zhang ◽  
Meng Yu Li ◽  
Hao Hua Li ◽  
...  
Keyword(s):  
High Voltage ◽  
Low Voltage ◽  
Electrical Equipment ◽  
Small Scale ◽  
Electrical Characteristics ◽  
High Melting Point ◽  
Vacuum Switch ◽  
New Material ◽  
Switching Equipment ◽  
Better Than

Electrical contractor affects reliability and working life of switches and electrical equipment directly, which is the key component of high-voltage and low-voltage apparatus. Nowadays, all fields of mid-voltage and above are occupied by vacuum switch. The invention of contactor material CuCr promotes the development of electrical contractor material and vacuum switch though the weakness can not be ignored. This paper makes a study and analysis about the performance of traditional electrical contractor material WCu. Its believed that alloy WCu has the high conductivity and high thermal conductivity of W, and the ability to improve applying condition and reduce electrical corrosion of Cu. So the experiment is made to test electrical characteristics of material WCu which is doping with different element. The performance of a new electrical contractor material, named Ti3SiC2, which is better than alloy WCu is put forward. This material meets the requirement, including high voltage, huge capacity, small scale, for switching equipment to develop grid, as the new material has advantage of low density, high modulus, high melting point, and antioxidant and so on. The successful application improves its superiority in the field of electrical contractor material.

Electrical Characteristics of Silicone Rubber as Insulation Materials

2015 ◽  
Vol 1119 ◽  
pp. 317-323 ◽  
Author(s):  
Mohamed Abd El-Khalek ◽  
Loai Saad Nasrat ◽  
Mahmoud Abd El-Hamed ◽  
Soliman El-Debeiky
Keyword(s):  
Leakage Current ◽  
High Voltage ◽  
Silicone Rubber ◽  
Time To Failure ◽  
Electrical Characteristics ◽  
Insulation Materials ◽  
The Relationship ◽  
Salt Fog

This paper presents the results of a study carried out to examine electrical characteristics of high voltage Silicone Rubber (SIR) insulators under weather pollution conditions. The specimens of SIR with and without Alumina tri-hydrate (ATH) filler have been chemically prepared. The AC (50 Hz) surface aging of SIR specimens have been evaluated under salt fog chamber. Furthermore, the relationship between the leakage current and time to failure for SIR specimens with various concentrations of ATH filler under different weather pollution conditions has been measured in this work.

Low-Voltage Variable Gain Current Amplifier for High-Voltage Signal Processing

2009 ◽  
Vol 129 (8) ◽  
pp. 1511-1517
Author(s):  
Nicodimus Retdian ◽  
Jieting Zhang ◽  
Takahide Sato ◽  
Shigetaka Takagi
Keyword(s):  
Signal Processing ◽  
High Voltage ◽  
Low Voltage ◽  
Current Amplifier ◽  
Variable Gain ◽  
Voltage Signal

scholarly journals The third form electric organ discharge of electric eels

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jun Xu ◽  
Xiang Cui ◽  
Huiyuan Zhang
Keyword(s):  
High Voltage ◽  
Low Voltage ◽  
Electric Organ Discharge ◽  
Electric Organ ◽  
The Third ◽  
Electric Organs ◽  
Electric Eel ◽  
New Finding ◽  
Discharge Behavior ◽  
Unique Species

AbstractThe electric eel is a unique species that has evolved three electric organs. Since the 1950s, electric eels have generally been assumed to use these three organs to generate two forms of electric organ discharge (EOD): high-voltage EOD for predation and defense and low-voltage EOD for electrolocation and communication. However, why electric eels evolved three electric organs to generate two forms of EOD and how these three organs work together to generate these two forms of EOD have not been clear until now. Here, we present the third form of independent EOD of electric eels: middle-voltage EOD. We suggest that every form of EOD is generated by one electric organ independently and reveal the typical discharge order of the three electric organs. We also discuss hybrid EODs, which are combinations of these three independent EODs. This new finding indicates that the electric eel discharge behavior and physiology and the evolutionary purpose of the three electric organs are more complex than previously assumed. The purpose of the middle-voltage EOD still requires clarification.

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