http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
가출현(Chool-Hyun Ka),김순기(Soon-Gi Kim) 한국조명·전기설비학회 2005 한국조명·전기설비학회 학술대회논문집 Vol.2005 No.5월
IGBT를 이용한 형광등 백라이트 제어기를 설계 제작하여 특성 실험을 한 결과, 타 방식의 백라이트 제어기에 비하여 고효율, 고역률, 고품질의 특성을 가지는 한편, 스위칭 시에 발생하는 피크 전류 및 노이즈로 인한 인접 전기전자기기에 영향을 미치지 않도록 함으로써 안정성이 뛰어나며, 또한 기존의 슬라이닥스를 이용한 전원장치를 대체하는 한편 원격제어를 손쉽게 구현할 수 있는 장점을 가지고 있다. 또한 본 제어기는 제로크로싱 동기를 채택하여 온·오프 시에 발생하는 피이크 전류를 방지함으로서 제품의 안전성을 극대화 시킬 수 있는 장점을 가지고 있어 차후 산업용 전원 장치 및 각종 가변 전원을 필요로 하는 대상에도 광범위하게 응용될 수 있을 것이다.
가출현,이동규,김진사,Ka, Chool-Hyun,Lee, Dong-Gyu,Kim, Jin-Sa 한국전기전자재료학회 2017 전기전자재료학회논문지 Vol.30 No.9
The advancement and diversification of urban functions has caused an increasing need to improve the reliability of power supplies. The diversification of urban areas causes social disruptions by paralyzing urban functions during power outages. A large power outage occurs in the event of an accident, owing to the subduction of distribution lines. Therefore, in recent years, for the sake of the environment and safety, the safety diagnosis of electric power facilities has become an important issue. In this system, because thermal information changes rapidly during unattended monitoring owing to heat concentration phenomenon due to abnormal load or deterioration, studies have been conducted on the development of a device that can notify the manager at all times.
김순기(Soon-Gi Kim),가출현(Chool-Hyun Ka) 한국조명·전기설비학회 2007 한국조명·전기설비학회 학술대회논문집 Vol.2007 No.5월
전자식 안정기 회로구성은 EMI 필터부분과 고주파 공진인버터 그리고 안정기 출력을 제어하는 출력 전압 및 주파수를 제어하는 부분으로 구성되며 half-bridge LCC 직렬공진회로가 주로 사용되고 있다. 고주파로 점등하기 때문에 음향공진 현상이 발생하여 아크의 떨림으로 언한 제반 요소들을 해결하기 위한 제어회로를 설계하여 해결한다. 본 논문에서는 메탈할라이드 램프와 전자식 안정기 회로의 시뮬레이션 데이터를 활용하여 전자식 안정기의 입력전압 변동시 출력을 일정하게 유지하는 정전력 회로 방식을 설계하여 보다 안정화된 400W급 전자식 안정기를 설계하고 시작품을 제작하여 얻은 결과를 검증하였다.
김순기(Soon-Gi Kim),육현대(Hyun-Dai Yuk),가출현(Chool-Hyun Ka) 한국조명·전기설비학회 2005 한국조명·전기설비학회 학술대회논문집 Vol.2005 No.5월
This paper provided a counter measures against the troubles and accidents that are likely to take place in the power plant using hydrogen gas as a coolant for the cooling system of the generator. Because of the extremely wide flammability limits of hydrogen in comparison to the other flammable gases, the safety measures against the hydrogen accidents is very important to ensure the normal operation of electric-power facility. This study"s purpose was a presentation of standard model of safety management of hydrogen equipments in the coal firing power plant such as following items: 1) providing the technical prevention manual of the hydrogen explosions and hydrogen fires occurring in the cooling system of power generator; 2) the selection of explosion-proof equipments in terms of the risk level of operating environment; 3) the establishment of regulations and counter measures, such as the incorporation of gas leakage alarm device, for preventing the accidents from arising; 4) the establishment of safety management system to ensure the normal operation of the power plant.
가출현,홍진웅 한국산업안전학회 1996 한국안전학회지 Vol.11 No.1
As the recently proposed JTC has been proven to be effective for implementation of real-time target tracking system, the interest on the electronic support system for the real-time JTC tracker has been increased. Accordingly, we proposed a tracking system which is based on BPEJTC and adaptive the fixed site. But because the EOTS is generally needed in the moving site such as aircraft and vehicles, and there are many different tracking algorithm to adopt the BPEJTC, we present an advanced version of BPEJTC driver which has synchronization input so as to be used for the target pointer. In addition to the designed system architecture, some experimental results conducted by this system are illustrated.
폴리에틸렌 테레프탈레이트에서의 熱刺激電流에 대한 熱處理의 影響 및 誘電 特性의 變化에 關한 硏究
賈出鉉,李榮魯 서울産業大學校 1986 논문집 Vol.24 No.1
In order to inverstigate the relaxation process of molecular chain segments on a polyethylene Terephthalate the Characteristics of thermally Stimulated currents were observed for the speciment by thermal treatments. As the results, it is recognized that peak of dielectric loss related to the peak of TSC is being in 90-110[℃]. Whe it is slow cooled and ice quenching after the thermal treatment, it is obtained that the activation energies are 0.7[eV] an 0.66[eV] respectively at maximum annealing temperature. And it has been also found that there is the temperatural characteristics the β peak is achieved at less than 25[℃], and then α peak was achieved at 100[℃] -120[℃].
賈出鉉,李榮魯 서울産業大學校 1995 논문집 Vol.41 No.1
In this paper, as the tree was generalied by changing applied voltage and time, noize or dim photograph of obtained with optical microscope. And then, fractal dimension of each photograph was calculated according to the applied voltage with are as following. When 9[kV], 12[kV], 15[kV], 18[kV] was applied the obtained fractal dimension was 1.3∼1.5, 1.5∼1.7, 1.6∼1.8, 1.7∼1.9 respectively.