• Title/Summary/Keyword: electrode distance

Search Result 410, Processing Time 0.03 seconds

A Research on the Solution of the Potential Interferences of Isolation Grounding Systems (독립접지방식의 전위간섭 문제 해결을 위한 연구)

  • Lee, Bok-Hee;Lee, Su-Bong;Lee, Tae-Hyung;Kil, Hyung-Jun;Han, Woon-Ki;Kim, Hyo-Jin;Lee, Hyung-Kyon
    • Proceedings of the KIEE Conference
    • /
    • 2005.07e
    • /
    • pp.49-51
    • /
    • 2005
  • This paper presents the potential interferences in various grounding electrode systems. The ground potential rise and potential interference coefficients were calculated as a function of the configuration and size of grounding electrodes and the distance between grounding electrodes. The potential rise and potential interference coefficient strongly depend on the distance between grounding electrodes, the shape and size of grounding electrodes.

  • PDF

The characteristics of anti-erosion for MgO protecting layer in plasma display panel (플라즈마 디스플레이 보호막으로 사용되는 마그네슘 산화막(MgO)의 내식각 특성)

  • 최훈영;이석현
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
    • /
    • v.13 no.2
    • /
    • pp.163-169
    • /
    • 2000
  • In this paper, we showed the erosion characteristic of MgO protector layer releated to lifetime of plasma display panel(PDP). We observed MgO erosion characteristic as a functions of deposition conditions, pressure and distance between electrodes. In RIE condition of Xe gas, the lowest erosion rate appears in the conditions of no heating bias voltage -30V and pressure 5mtorr. In general, as deposition rate increases, erosion rate decreases. In real panel, when the gap distance between electrodes is narrow and the pressure is low, the heavy plasma damage appears. Also, the surfaces between electrodes and on the bus electrode are extremely damaged.

  • PDF

A Study on the Surface Characteristics of MgO Layer as the Various Deposition Methods of Electron-beam Evaporation (Electron-beam Evaporation의 증착 방법에 따른 MgO Layer의 표면 특성에 관한 연구)

  • Heo, Jeong-Eun;Lee, Don-Kyu;Cho, Sung-Yong;Lee, Hae-June;Lee, Ho-Jun;Park, Chung-Hoo
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
    • /
    • v.21 no.5
    • /
    • pp.468-473
    • /
    • 2008
  • A MgO layer is used as electrode protective film in the alternating current plasma display panel (AC PDP). The properties of MgO layer are thought to be one of the most important factors that affects the panel reliability through the firing voltage variation. In this study, we investigated the relations between the surface characteristics and e-beam evaporation process parameters such as deposition rate, temperature of substrate and distance between the MgO pellet and substrate. To produce the MgO layer of (200) crystal orientation, we suggest the high temperature of the substrate, the long distance between the pellet and substrate and the high deposition rate.

A Study on the Dielectric Constant Measurement of PBDG Organic Ultra Thin Film (PBDG 유기초박막의 유전율 측정에 관한 연구)

  • Song, Jin-Won;Lee, Kyung-Sup
    • Proceedings of the KIEE Conference
    • /
    • 2002.11a
    • /
    • pp.150-152
    • /
    • 2002
  • This paper, experiment manufactures device of Metal/Poly-$\gamma-Benzyl\;_D-Glutamate$ Organic Films/Metal structure using PBDG and I-V properties and C-F properties. The I-V characteristic is measured that approve voltage from 0 to +2[V] of device and the distance between electrode is larger, could know that small current flow and thin film could know that had insulation property. C-F characteristic has each other affinity between the polarization amount and frequency. Dielectric constant of MIM device could know by dipole that is voluntary polarization of LB film that polarization is happened. The capacitor properties of a thin film is better as the distance between electrodes is smaller.

  • PDF

Effect of a Reciprocating Paddle on the Electrodeposit Uniformity of Patterned Cathodes (왕복패들이 패턴화된 음극의 전착균일성에 미치는 영향)

  • Oh Young-joo;Chung Soon-hyo
    • Korean Journal of Materials Research
    • /
    • v.14 no.3
    • /
    • pp.196-202
    • /
    • 2004
  • A numerical simulation based on the finite element method is used to investigate the effect of a reciprocal paddle on the uniformity of deposition rates at a patterned electrode. The calculated deposition rates agreed well with the measured values. The influences of the paddle velocity, the gap between cathodes and paddles, anode size and the distance between the anode and cathode have been studied. The optimum conditions on the paddle and geometric factors for electrodeposit uniformity could be obtained.

Dehydration by Electro-osmosis on Ceramic Body (Electro-osmosis에 의한 Dehydration)

  • Han, Sang-Mok
    • Journal of Industrial Technology
    • /
    • v.4
    • /
    • pp.43-46
    • /
    • 1984
  • In process of water removing safely from plastic clay, an electric field applied to a wet, porous solid such as day usually causes the rapid dehydration. The water-bearing positive ions move to negative electrode under the d. c. electrical stress or field. Therefore application of electro-osmosis to wet clay could include drying thick and large-scale ceramic body quickly and evenly. The d. c. power supply unit to 60 volts is necessary for safe practice. Also wider contact area and shorter distance between electrodes accelerate effectively the removal of water.

  • PDF

Characteristics of COD Removal in the Electrolytic Treatment of Dyeing-Wastewater (전기분해에 의한 염색폐수의 COD 제거 특성)

  • 강광남;윤용수
    • Journal of environmental and Sanitary engineering
    • /
    • v.13 no.2
    • /
    • pp.139-146
    • /
    • 1998
  • The characteristics of color and COD removal for dyeing-wastewater using electrochemical reaction were investigated. >From the result, the removal efficiency of color and COD were increased with increase of temperature, decrease of electrode distance, increase of electrolyte concentration and increase of potential and these were obtained above 99%, above 75% within 30 min, individually. Cause of higher COD removal efficiency, it is more suitable that dyeing-wastewater is treated by electrolytic treatment prior to biological treatment. It is concluded that the electrolytic treatment of dyeing-wastewater can be used as the effective and economical method in practical treatment.

  • PDF

A study of the hollow cathode discharge (HOLLOW CATHODE DISCHARGE의 방전 특성 연구)

  • Cho, S.M.;Seo, Y.W.;Kim, M.J.;Whang, K.W.
    • Proceedings of the KIEE Conference
    • /
    • 1989.11a
    • /
    • pp.139-141
    • /
    • 1989
  • The characteristics of the hollow cathode discharge were investigated. Temperature distribution of the hollow cathode was investigated and I-V curves of the hollow cathode discharge were obtained. In this paper variables are chamber pressure, Ar gas flow rate injected through the cathode tube and the gap distance between cathode and anode. The inter electrode electron temperature and density were measured by Langmuir probe.

  • PDF

Phosphorus Removal by Electrolysis with Aluminium Electrodes (알루미늄의 전기분해를 이용한 인 제거)

  • 정경훈;최형일;정오진;최칠남;정재경
    • Journal of Environmental Science International
    • /
    • v.9 no.1
    • /
    • pp.95-99
    • /
    • 2000
  • Laboratory experiments were performed to investigate the effects of various factors on the phosphorus removal by electrolysis with aluminium electrodes. The efficiency of phosphorus removal increases with increasing of voltage applied, surface area of electrodes and electrolyte concentration, and decreasing of electrode distance. The phosphorus removal was not affected by the connection number of an electric circuit. The amount of aluminium ion eluted from electrodes according to Faraday's law was 4.47 mg and the A/P mole ratio was 2.14 at the electric current value of 20 mA.

  • PDF