직권 電動機의 全波制御에 關한 硏究

柳盛林 忠州大學校 1980 한국교통대학교 논문집 Vol.13 No.1

This thesis covers the experiment for constituting fullwave S.C.R leonard equipment useing residul reverse electromotive force feedback and for testing the speed-testing characteristic invarience with firing angles of S.C.R gate. Consequently, when d-creacter(1.5mH) was applied to electric magnetic circuit in series, examine closely various characteristic.

熱刺激 電流에 의한 絶緣體中 注入電荷의 測定에 관한 考察

柳盛林 忠州大學校 1987 한국교통대학교 논문집 Vol.21 No.-

In this paper the measure of injection charge in polyethylene are discussed based on the observed characterictics of thermally stimulated currents. As a results 1. obtained which relation is space charge limit Current between Thermally Stimulated Current 2. Proposed measure method which used Collecting voltage 3. obtained injection charge and these average position

PTC소지자를 이용한 유황훈증장치의 개발

柳盛林 忠州大學校 1999 한국교통대학교 논문집 Vol.34 No.1

A Sulphur fume evaporator (SFE) has recently emerged as a new safe pesticide distributor in a facility farming agriculture such as rose nurseries since Sulphur has been proved to be non-toxic to human being and plants as well. However, recently developed SFEs, which adopted resistant heating elements or luminous energy, have been neither dependable nor affordable because of their high electrical consumption and costly auxiliary devices such as temperature controller. In an attempt to reduce those risks, positive temperature coefficient (PTC) devices have been considered to develop a more efficient, safer but less expensive SFE comparison to the imported products, since PTC can perform dual functions together, heating and temperature controlling. A new PTC adopted SFE has been developed through optimizing several factors such as temperature range, fume reaching distance, fume evaporation amount, electrical consumption and so on in this study.

Polymethy-Metacrylate에서 Al₂O₃微粉이 Tree에 미치는 영향

柳盛林 忠州大學校 1985 한국교통대학교 논문집 Vol.19 No.1

As an organic polymer resin is the material which is highly stablized in electric or chemical, it is widly used as electrical insulatating material. But when it is used for a long time, the generation of tree which gradually happen to one of the phonomena of predielectric break-down take large specific parts in the cause electric breakdown. So the counter measure for this problem is greatly demanded as it has been compared that the phenomena of the tree in pure P.M.M.A with the initial course of generation and advancing course by using P.M.M.A mixed powder Al₂O₃at a constant weight rate which posses larger dielectric constant than that of the base material. According to the results, the suppressive effect is specifically suggestive for the reason that dischange route must be constructed around the particle suface because of the intensified field strength near filler, which, inturn, reduces the geometrical curature of the tip so that the local intensity of electrical field can be relaxed.

M.O.M 구조의 전기전도에 관한 고찰

柳盛林 忠州大學校 1995 한국교통대학교 논문집 Vol.30 No.1

This paper investigates the electrical conduction mechanisms in M.O.M structure. The behaviour of J-E and J-T characteristics shows that in M.O.M diode with oxide thickness less than 100Å, the dominant conduction process is shottky emission. In M.O.M diode of thickness 500Å, space-charge-limited current is observed, and it is confirmed by the fast that J-V characteristics of the samples are thickness dependent.

T.S.C에 의한 Ion空間電荷分極의 測定

柳盛林 충주대학교 1990 한국교통대학교 논문집 Vol.24 No.-

In this the measure of lon space charge polarization is discussed based on observed characterictics of Thermally Stimulated Currents As a result obtained space charge distance by T.S.C And measured lon concentration And interspace of electrode electiricfield.

金屬-絶緣體-金屬 다이오드의 傳導 特性에 關한 考察

柳盛林 忠州大學校 1996 한국교통대학교 논문집 Vol.31 No.1

In this article electicasl conduction mechanisms are inverstigated in M(metal)-I(insulator)-M(metal) (Mg-MgO-Mg) diodes. The behaviour of J-E and J-T characteristics shows that the dominant conduction process in M.I.M diode with oxide thickness 300Å, is Schottky emission.

저밀도 Polyethylene에 있어서 Treeing 진전에 관한 고찰

유성림 忠州大學校 1981 한국교통대학교 논문집 Vol.14 No.2

As an organic polymer resin is the material which is highly stablized in electric or chemical, it is widly used a electrical insultating material. But when it is used for a long time, the generation of tree which gradually happen to one of the phenomena of predielectric breakdown take large specifie parts in the cause electric breakdown. So the counter measure for this problem is greatly demanded as it has been compared that the phenomena of the tree in pure. L.D.P.E. with the intial course of generation and advancing course by using L.D.P.E. mixed inorganic fine power Sio₂at aconstant weight rate which posse larger fine dielectric constants than that of the base material and is stablxed the thermal and chemical point of view, this treatise will study how torepress the tree summarized result which is abserved from this experiment is as follows 1. The larger dielectric constants of filler mixed pure L.D.P.E inital generation of tree tand to be expedite in intermixed specimen than pure L.P.D.E 2. in the course of the development of the generated tree, it has been observed that the development of tree was largely suppressed in the intermixed specimen than of the base materical. 3. In the course of the development of the generated tree, it took long time to form the snother branch of three the more branches of tree was gradully formed and it took exponetially longer time to form them.

低密度 Polyethylene에 있어서 無機質 微粉을 混入時 混入比에 따른 Treeing진전에 關한 考察

柳盛林 忠州大學校 1982 한국교통대학교 논문집 Vol.15 No.1

As an organic polymer resin is the material which is highly stablized in electric or chemical, it is widly used as electrical insulatating material. But when it is used for a long time, the generation of tree which gradually happen to one of the phenomena of predielectric breakdown take lauge specific parts in the cause electric breakdown. So the counter measure for this problem is greatly demanded as it has been compared that the phenomena of the tree in pure L.D.P.E with the initial course of generation and advancing course by using L.D.P.E mixed power Al?O? at a constant weight rate which posses larger dielectric constants than that of the base material and is stablized the thermal and chemical point of view, this treatise will study how to repress the tree summarized result which is observed from this experiment is as follows: 1. The larger dielectric constants of filler mixed pure L.D.P.E initial generation of tree tend to be expedite in intermixed specimen than pure L.D.P.E. 2. In the course of the development of the generated tree, it has been observed that the development of tree was largely suppressed in the intermixed specimen than pure L.D.P.E.

低密度 Polyethylene에 있어서 Tree 進展과 放電發生數와의 관계 考察

柳盛林 忠州大學校 1983 한국교통대학교 논문집 Vol.16 No.2

The treeing in insulator shortens the life of the cable so the counter measure for this problem is demand. But the observation of the treeing with an optical microscope in abscure materials is very difficult. So we have investigated the total number of discharge measure from the treeing. It has been found that the total of discharge is closely related with the growth of tree observed with and optical microscope. Based on these result, the growth of the tree for other obscure insulafor could be estimated from the observation of the total number of the discharge.