• 전기의세계
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• 제16권3호
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• pp.21-27
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• 1967

We meet with the fact that a majority of electric machinery have been insulated to the state of solids & liquids or solids & gases, that is, with compound dielectrics. And also we can find voids caused by undesirbble structure, long-used material and so on. When it is discharged in a void or in the parts of gases of insulating material, the insulation of the machinery is gradually and finally destroyed through the effect of ozone, nitrogen-oxide, electronic pulses and so on. So we maybe conculded that it is necessary and important to detected void pulse and void corona in order to prevent sudden break down of electric machinery.

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2005년도 춘계학술대회논문집
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• pp.409-411
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• 2005

In this literature, we mose the design method of a proportional pressure control valve using valve system analysis and finite element method. And it is shown that a manufactured proportional pressure control valve character is well matched to tile theoretical analysis results. Also it is verified that the proposed valve has excellent performance compared to the other foreign products.

• 한국조명전기설비학회지:조명전기설비
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• 제6권5호
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• pp.50-56
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• 1992

This paper presents the effect of moisture and dust on streaming electrification in transformer oil, in order to investigate the electrification tendency of oil adding moisture an dust. Authors designed series electrification device to analyse streaming electrification phenomena easily. Experimental results show that the streaming current is linearly increased with oil velocity and it has a peak value at about a 50 [%]. Adding of moisture and dust in oil decreased charging level and it was dominant in case of moisture.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1989년도 추계학술대회 논문집 학회본부
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• pp.342-345
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• 1989

In this paper, a controller design for a electro-hydraulic servo system is presented. When state variables of the system are not directly measurable for feedback control, it is very difficult to satisfy the given requirements for the system output control. The proposed design method is based on the feeding back of the output variable and it's time delayed values.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 학술대회 논문집 전문대학교육위원
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• pp.96-99
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• 2003

As for the Elect-CAD, it was developed a design of the electricity equipment which did manually, a quotation, all kinds of bill writing in the program that Package anger became. Elect-CAD can easily write an estimate back by all kinds of bill writing and estimatic with a design at the same time, and maximization gets an efficiency of work done and can efficiently manage project, and it is a revolutionary program in a management plane.

• 전기저널
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• 통권411호
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• pp.19-20
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• 2011

올해로 창립 20주년을 맞은 송암시스콤(대표이사 이해규)은 전력전자와 통신전문회사로서 1991년 설립되었다. 전력산업 선진화를 추구해 온 송암시스콤은 유비쿼터스 기술을 접목한 전력IT의 미래 산업 환경과 지능형 전력망 기반의 저탄소 녹색성장을 제시하며, 설비의 높은 신뢰도는 물론, 공정하고 투명한 기업 신용을 바탕으로 고객 만족을 위해 노력하고 있다. 또한, 그 동안 축적된 노하우를 바탕으로 전력IT와 정보통신 및 각종 응용분야에서 새 시대 전력문화의 장을 열기 위해 신기술과 신제품 개발에 더욱 정진하고 있다.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 1996년도 춘계학술대회 논문집
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• pp.280-283
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• 1996

The electrical inductivity decreases when the content of NiO is used within 1 at% and increases when it's used more than that. Impedance spectrum seems to be one semicircle. The size of semicircle increases when the content of NiO is sued within 1 at% and decreases when it's used mor than that.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1994년도 하계학술대회 논문집 A
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• pp.97-99
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• 1994

Energy saving electric fan heater that uses driving part as heating part is different from general fan heater. As it uses energy that drives rotor and generate heat at the same coil. it is simpler and cheaper than fan heater. In this study, shaded-pole motor that is low cost and simple in spite of low efficiency was used for th fan heater.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 1998년도 춘계학술대회 논문집
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• pp.215-218
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• 1998

XLPE/VLDPE (Crosslinked polyethylene/very low density polyethylene) blends were prepared by a twin screw extruder and their electrical properties such as water tree and breakdown characteristic were measured. it was found that both water tree and breakdown characteristics of XLPE were improved by the addition of VLDPE to polyethylene. It was also found that the extent of improvement of electrical properties by the addition of VLDPE to polyethylene depends on the type and concentration of VLDPE.

• 전기의세계
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• 제29권2호
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• pp.111-117
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• 1980

Contacts formed by vacuum evaporation of As-Te-Si-Ge chalcogenide glass onto Al metal (99.9999%) are studied by measuring paralle capacitance C(V), Cp(w), resistance R(V), Rp(w), and I-V characteristics. The fact that contact metal alloying produced high-resistance region is confirmed from the measurements of parallel capacitance and resistance. From the I-V characteristics in the pre-switcing region, it is found that electronic conduction and sitching occurs in the vicinity of metal-amorphous semiconductor interface. From the experimental obsevations, it is concuded that the current flow in the thin film is space-charge limited current (SCLC) due to the tunneling of electrons through the energy barriers.