• Title, Summary, Keyword: Electrostatics

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MODERN ELECTROSTATICS FOR HIGH-TECHNOLOGIES

  • Masuda, Senichi
    • Proceedings of the KIEE Conference
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    • pp.12-15
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    • 1987
  • The study on Electrostatics represents the first scientific interest of human being on electrical phenomena, and it led to enormous progress of electrical and electronic science and engineering up to the current levels. Electrostatics, however, has been long forgotten in the stream of this history as a tribial minor field. Interesting enough, this minor sector has regained recently its new life, in particular in the area of high-technologies, and Electrostatics is going to become one of the most important field in the future of electrical and electronics engineerings. It is impossible to cover the entire trend of this emerging field in a limited space, so that spot lights shall be focused on several important topics in this paper.

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Electrostatics Analysis and Prevention according to each position of a Large Type Inkjet Plotter (대형 잉크젯 플로터의 워치별 정전기 해석 및 방지)

  • Yoon, S.Y.;Choi, G.S.;Choe, O.R.;Baek, S.H.
    • Proceedings of the KIEE Conference
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    • pp.116-119
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    • 2004
  • According to industrial development, all fields using chemical instrument and material are generated an electrostatics. This paper is represented the electrostatics distribution analysis of industrial type Inkjet plotter. In order to such experiment, an electrostatics for each portions of plotter(OJ-62) are measured by electrostatic measurement. Based on these, the big large position of electrostatics was analyzed by finite element method(Maxwell-2D), Here it is showed an electrostatic inducement and electric charge theory required.

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Electrostatic Electrification Properties due to Square of Silicone Rubber (실리콘 고무의 면적 변화에 따른 정전기 대전 특성)

  • Lee, Sung-Ill
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.25 no.9
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    • pp.732-737
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    • 2012
  • This study made a specimen (contact surface size: $45\;mm{\times}0.02\;mm{\times}45{\sim}55\;mm$) with silicon rubber for low voltage cable with 50 phr silica filler. The electrification voltage of electrostatics were measured for different sizes of contact surface with the applied voltage of 10kV and the environmental settings of temperature ($25{\sim}40^{\circ}C$) and humidity (40~80%). The following conclusions were made. The electrification voltage of electrostatics decreased as the humidity increased. The electrification voltage of electrostatics increased as the temperature increased. The larger the surface size, the higher the electrification voltage of electrostatics. The property of the material had more effect on the relaxation time than the humidity.

Electrostatic Analysis and Protection of the Industrial Type Inkjet Plotter (산업용 잉크젯 플로터의 정전기 해석 및 차폐)

  • Choi, Geun-Soo;Baek, Soo-Hyun
    • The Transactions of the Korean Institute of Electrical Engineers B
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    • v.55 no.3
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    • pp.159-167
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    • 2006
  • According to industrial development, all fields using chemical instrument and material are generated an electrostatics. Electrostatic problems were very important part to all these components, moving system, printer, clothe machines etc. This paper was represented an analysis of electrostatic electrification by FEM (finite element method) of industrial type Inkjet plotter. Here electrostatics distribution analysis is accomplished by Maxwell-2D. We are showed an electrostatics generation source by rubbing and meager profits of electric charge. It know electronic values with each system position by experiment. These are decreased through earth and electricity shielding. Therefore this paper is proved by the simulation and experiment result.

A Study on Electrostatic Electrification Properties of Silicone Rubber for Thermal Bonding According to the Variation of Environment (환경변화에 의한 열 압착용 실리콘 고무의 정전기 대전 특성에 관한 연구)

  • Lee, Sung-Ill
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.23 no.9
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    • pp.718-723
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    • 2010
  • In this paper, the following results were obtained from the experiment in which electrification voltage of silicone rubber specimen for thermal bonding were measured under various time, temperature ($10{\sim}40^{\circ}C$), and humidity (30~90%) conditions and different amount of carbon additives (0~15 phr (per hundred resin)). Electrostatics electrification voltage decreased when carbon is up to 10 phr, and there was no electrification voltage in 15 phr condition. The electrostatics electrification voltage did not change over time. When the temperature was constant, electrostatics electrification voltage sharply dropped when the humidity was around 70%. That means, this condition might be appropriate for prevention of charging. The electrification voltage decreased as humidity and amount of carbon increased.

Protection and Electrostatic Analysis of the Industrial Type Inkjet Plotter using FEM (유한요소법을 이용한 산업용 잉크젯 플로터의 정전기 해석과 대책)

  • Yoon, S.Y.;Choi, G.S.;Kim, Y.;Baek, S.H.
    • Proceedings of the KIEE Conference
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    • pp.1496-1499
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    • 2005
  • This paper was represented an electrostatics distribution analysis using FEM(finite element method) with industrial type Inkjet plotter. Here, we know electronic value with each system position by experiment. these were decreased by discharge through earth and electricity shielding. According to industrial development, all fields using chemical instrument and material are generated an electrostatics. Based on these, the big large position of electrostatics was obtained metal base of controller, nonconductor fiber between two rubber roller, head controller by moving roller etc., Therefore these were showed an electrostatics generation source and by rubbing and meager profits electric charge.

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An Analysis of Experiments Related to Electrostatics in Secondary School Textbooks and a Proposal of Experiments for Better Understanding of Electrostatics (중학교 과학 교과서의 정전기 관련 실험에 대한 분석 및 제안)

  • Hyun, Donggeul;Jho, Hunkoog
    • New Physics: Sae Mulli
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    • v.67 no.8
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    • pp.975-990
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    • 2017
  • The purpose of this study was to analyze the electrostatic experiments introduced in secondary science textbooks and to propose the effective methods for students to understand the concepts based on the experiments. Thus, five kinds of existing textbooks were selected, and the experiments presented in them were categorized into triboelectricity, contact electrification, electrostatic induction, and electrostatic discharge. This study suggested more simple and effective ways to understand those phenomena so that students can infer the kinds of charges, conservation of charge, electrostatic force, electrostatic induction, electrostatic discharge, and others.

Electrostatic Electrification Relaxation Properties of Polyester Rayon Non-woven Fabric due to Weight Variation (중량변화에 의한 폴리에스터 레이온 부직포의 정전기 대전 완화특성)

  • Lee, Sung-Ill;Park, Yong-Soon
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.24 no.12
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    • pp.977-981
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    • 2011
  • Non-wovens polyester rayon samples were manufactured, and the electrification properties of electrostatics were measured for three different samples (15 g/$m^2$, 25 g/$m^2$, and 40 g/$m^2$) with the environmental settings of temperature (20~40$^{\circ}C$) and humidity (40~90%). The conclusions are as follows. Heavy sample generated more static electricity when the temperature was constant. The static electricity decreased slowly when the humidity is less than 70%, while it sharply decreased over 70% humidity condition. For non-woven polyester rayon, static charge decreased as temperature and humidity increased. As the weight increased, less time were taken for the electrification voltage to drop to the half.

A Study on Analysis of Electrostatics Destruction of Electronic Equipment (전자부품의 정전파괴(ESD) 분석에 관한 연구)

  • Lee, Du-Young
    • The Journal of The Institute of Internet, Broadcasting and Communication
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    • v.10 no.6
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    • pp.235-241
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    • 2010
  • The static electricity generated by friction of two objects is called frictional electricity. The main cause of troubles in electronic components for military and civil use as well as in military radar appliances is found mostly in parts like LSI memories, particularly when they lose information of function momentarily while in operation, which usually leads to a fatal cause of troubles in the equipment. Troubles occur if electric noise is caused by the spark effected from discharge of static electricity from the equipment that is used nearby.