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      • KCI등재

        Short-Arc 램프용 전자식 안정기의 설계 및 제작

        김일권,한주섭,길경석,Kim Il-Kwon,Han Ju-Seop,Kil Gyung-Suk 한국정보통신학회 2006 한국정보통신학회논문지 Vol.10 No.4

        본 논문은 승압형 컨버터, 강압형 컨버터 및 저주파 인버터를 이용한 고휘도 Short-Arc 램프용 전자식 안정기의 설계 및 제작에 관하여 기술하였다. 제안한 안정기는 130 [Hz]의 구형 저주파를 램프에 인가함으로써 고압 방전 램프에서 발생할 수 있는 음향공명현상을 제거하였으며, 25 [kHz]의 고주파 전압을 중첩시켜 아크튜브의 전극에서 발생할 수 있는 열적 불균형을 해소하였다. 또한 전압 전류의 합을 이용한 정전력 제어를 수행하여, 주위 환경 및 램프의 노화에 따른 램프 전압의 변화에 대하여 안정한 점등상태를 유지하였다. 실험 결과로부터, 제작한 전자식 안정기의 램프 전압, 전류 및 전력은 각각 123.8 [V], 8.1 [A] 1,002 [W]로 측정되었다. This paper deals with an electronic ballast for hish intensity short-arc discharge lamps, which consists of a boost converter, a step down converter operated as a current source with power regulation and a low frequency inverter with external ignition circuit The ignition circuit generates high voltage pulses of 130[Hz] up to 5 [kV]. A reignition circuit is equipped in the ballast, and it operates the lamp at a regular interval for protection when an ignition fails. Acoustic resonance phenomenon was eliminated by operating a low frequency square wave voltage and current. The measured lamp voltage, current and consumption power were 123.8 [V], 8.1 [A] and 1,002 [W], respectively. From the experiment, we confirmed that the prototype ballast operates the lamp with a constant power.

      • KCI등재

        저압배선계통에서 직렬아크의 검출에 관한 연구

        김일권,박대원,최수연,박찬용,김황국,길경석,Kim, Il-Kwon,Park, Dae-Won,Choi, Su-Yeon,Park, Chan-Yong,Kim, Hwang-Kuk,Kil, Gyung-Suk 한국전기전자재료학회 2008 전기전자재료학회논문지 Vol.21 No.2

        This paper dealt with the detection algorithm of series arcing, which is a cause of electric fires in low-voltage wiring systems. To find the distinguished electrical features of series arc, we simulated series arcing by the arc generator specified in UL1699. An electric heater, an inverter-controlled vacuum cleaner, and a phase-controlled incandescent lamp were used as loads to generate series arcing. A high-pass filter (HPF) with the low cut-off frequency of 3 kHz at -3 dB was fabricated and applied to separate the series arc signal from the AC voltage source. The experiment showed that the high frequency signal generates randomly during series arcing, and the phase-controlled incandescent lamp produces high frequency pulses even in normal state. In this case, the magnitude, the width, and the randomness of high frequency signal should be analyzed to estimate series arcing precisely.

      • KCI등재후보

        UCC 뉴미디어아트에 나타난 소통미학에 관한 연구

        김일권,서용덕,Kim, Eel-Kwon,Suh, Yong-Duck 한국전자통신학회 2011 한국전자통신학회 논문지 Vol.6 No.1

        오늘날 디지털미디어와 인터넷의 발달로 새로운 사회 문화적 영역이 만들어지고 있다. 특히 디지털 편집장비를 이용하여 개인적인 영상 및 콘텐츠를 인터넷상에서 활용 및 전달하고자하는 UCC는 이 시대의 새로운 문화 영역 중 하나이다. 본 논문은 새로운 디지털미디어 시대의 컨텐츠와 사용자와의 관계에서 소통 미학적 연구를 시도함으로서 UCC의 예술로서의 가치, 문화적 가능성과 아울러 미디어 커뮤니케이션의 기능에 나타난 문화적, 예술적, 차원에서 시지각적 의미와 분석을 고찰하고, 개인을 넘어 공동체의 자기표현 과정 등의 구조까지 이해하며 서로 상호 소통하는 방법을 제안하였다. 디지털 네트워크의 단편적인 면, 종합적인 면, 등을 고려하여 자유문화의 실현이 어떻게 가능한지, 무분별하게 복제되고, 양산되는 UCC 컨텐츠 내에서의 질적 발전을 열어나가는 의미와 구조를 분석함으로서 UCC 문화 발전에 기여하는 발전방향을 제시하였다. Today the new social and cultural area is generated by development of digital media and internet. Especially UCC is the new cultural area of this time, UCC is applicated and delivered the individual image and contents by digital equipment. This research tried to study the communication esthetics with the relation of a user. And it study about the function of the media communication, the cultural possibility, the value by art of UCC. From now I have not to see the UCC media technology the level of technical limit and we see it variously the level of cultural and artistic. I study the meaning of them and try the analysis. And I will study about the communication between the individual and the community. And I will study also the short aspect and the synthesize aspect of digital network, and how possible the realization of free culture. And I will analyse the meaning and system of UCC contents that product and copy today and then I will suggest that contribute the UCC culture development.

      • KCI등재

        LED 항해등의 설계 및 제작

        김일권,김동건,길경석,조흥기,조규룡,Kim, Il-Kwon,Kim, Dong-Geon,Kil, Gyung-Suk,Cho, Heung-Gi,Cho, Kyu-Lyong 한국전기전자재료학회 2012 전기전자재료학회논문지 Vol.25 No.9

        In this paper, we designed and fabricated LED navigation lights which can replace the existing ones immediately and overcome disadvantages due to use of conventional lamps. To decide the best arrangement and position of a LED module, optical systems of existing navigation lights were analyzed and refracted routes of rays were simulated. The electrical and optical characteristics of the fabricated LED navigation lights were measured and analyzed with a goniophotometer. To calculate ranges of visibility, the vertical and horizontal luminous intensity distributions were evaluated in accordance with the COLREGs (convention on the international regulation for preventing collisions at Sea). From the results, the proposed LED navigation lights showed suitable characteristics for marine environment with the power consumption reduced by 90% and the maximum luminous intensity increased by 20% compared to the existing navigation lights.

      • KCI등재

        고강도 전자소자 리드프레임용 Cu/STS/Cu 클래드 메탈제조 및 물리적특성에 대한 열안정성 연구

        김일권,손문의,김용성,Kim, Il-Gwon,Son, Moon-Eui,Kim, Young-Sung 대한용접접합학회 2014 대한용접·접합학회지 Vol.32 No.5

        We have successfully fabricated high strengthening Cu/STS/Cu 3 layered clad metal of $70kgf/mm^2$ grade for electric device lead frame, and investigated thermal effect of the mechanical and physical properties on the Cu/STS/Cu 3 layered clad metal lead frame material at different temperatures ranging from RT to $200^{\circ}C$. The fabricated clad metal shows a good thermal stability under 6% degrading of mechanical tensile strength and hardness change at $200^{\circ}C$ and also physical properties show stable thermal and electrical conductance of over $220W/m{\cdot}K$ and 58.44% IACS upto the $200^{\circ}$. The results confirm that fabricated high strengthening Cu/STS/Cu 3 layered clad metal can be applied for the high performed electrical lead frame devices.

      • KCI등재

        김시습과 조선 초기 도교의 天文思想

        Kim Ihll-gwon(김일권) 한국도교문화학회 2001 道敎文化硏究 Vol.15 No.-

        In the history of Korean self-cultivation tradition, the practitioners of the early Choson dynasty developed their doctrines and theories of cultivation into what is called "Danhak", a method of cultivation based on the Daoistic philosophy of Choson. We can, first of all, approach the philosophy of Danhak using the thoughts outlined in the works of Kim Si-sup (1435-1493) of early Choson. As scholars have mentioned, he is seen as a pluralistic theorist who studied not only Confucianism but also Buddism and Daoism. In relation to Daoism, his text of "Maewoldang-jip" contains many Danhak principles of cultivation written from the aspect of astronomical cosmology. It is noteworthy that he had cited the parts of "Jinmoo-Kyung(眞武經)" and "Yonsaeng-Kyung(延生經)", Daoistic texts of China. These texts have come to be regarded as an important part of the Daoist canon and been used by the "Sokyokseo", the Government Daoistic Office of the early Choson. It is recorded in the part of rites of "Kyonggukdaejeon(經國大典)" that the "Yonsaeng-Kyung(延生經)", "Taeihll-Kyung(太一經)", "Okchu-Kyung(玉樞經)", "Jinmoo-Kyung(眞武經)" and “Yongwang-Kyung(龍王經)" and other texts were used in the test for electing the officers of Sokyokseo. This fact is important in the better understanding of the astronomical ideas of Choson Daoism for which we have little data. "Jinmoo-Kyung" is one of the Daoistic canons that described the northern deity, called "JinMoodaeje(眞武大帝)", the Dark Warrior, one among the Four Deities including the Blue Dragon, White Tiger, Vermillion Phoenix. It's contents readily reveal to us the pantheon and the worldview of the astronomical cosmology of the early Choson Daoism. Next, "Yonsaeng-Kyung" contains a belief system of the Northern Dipper that was popular among the populace and often worshipped in the Korean temples up to present time. Originally known as "Bookdoobonmyung-yonsaengjing-Kyung(北斗本命延生眞經)", it describes an astrology where the worshippers of the Big Dipper can pray for help and longevity. This paper shows this life lengthening thought was used in explaining the principles of Danhak as expressed in Kim Si-sup's writings. As above, we are able to discern the theoretical tendency of the early Choson Daosim and note the canonical groundings from the fact that Danhak ideas of Kim Si-sup were closely related with the Daoistic canons which the "Sokyokseo" regarded highly.

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