• Title/Summary/Keyword: Mn-Zn ferrite

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Properties of Temperature and Brightness Applied on Frequency in Electrodeless Fluorescent Lamp (무전극 형광램프의 주파수 변화에 따른 온도 및 광속 특성)

  • Lee, Joo-Ho;Choi, Gi-Seung;Kim, Nam-Goon;Park, Noh-Joon;Park, Dae-Hee
    • Proceedings of the KIEE Conference
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    • 2006.07a
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    • pp.607-608
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    • 2006
  • In recent, it became necessary to develop the technology about electrodeless fluorescent lamp according to demand of the electrodeless fluorescent lamp system that used higher efficiency and advantage of long lifetime. Inductively coupled plasma is commonly used for electrodeless lamp due to its ease of plasma generation. An electric power efficiency of electrodeless fluorescent lamp has big relative property of gas in lamp, gas pressure, lamp formation, ingredients of magnetic substance and shape and action frequency etc. We used magnetic substance that open self-examination material of electrodeless fluorescent lamp antenna. Ferrite that is used in this experiment was Mn-Zn type. We have examined temperature and flux characteristic by frequency. Considering using frequency 2.65[MHz], Frequency was changed from 2.05(MHz) to 3.05[MHz] to recognize flux and temperature change of lamp. I used LMS(Lighting Measurement System) to measure flux and IR Camera to measure temperature of lamp.

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Properties of Temperature and Brightness Applied on Frequency in Electrodeless Fluorescent Lamp (무전극 형광램프의 주파수 변화에 따른 온도 및 광속 특성)

  • Lee, Joo-Ho;Choi, Gi-Seung;Kim, Nam-Goon;Park, Noh-Joon;Park, Dae-Hee
    • Proceedings of the KIEE Conference
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    • 2006.07d
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    • pp.2239-2240
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    • 2006
  • In recent, it became necessary to develop the technology about electrodeless fluorescent lamp according to demand of the electrodeless fluorescent lamp system that used higher efficiency and advantage of long lifetime. Inductively coupled plasma is commonly used for electrodeless lamp due to its ease of plasma generation. An electric power efficiency of electrodeless fluorescent lamp has big relative property of gas in lamp, gas pressure, lamp formation, ingredients of magnetic substance and shape and action frequency etc. We used magnetic substance that open self-examination material of electrodeless fluorescent lamp antenna. Ferrite that is used in this experiment was Mn-Zn type. We have examined temperature and flux characteristic by frequency. Considering using frequency 2.65[MHz], Frequency was changed from 2.05[MHz] to 3.05[MHz] to recognize flux and temperature change of lamp. I used LMS(Lighting Measurement System) to measure flux and IR Camera to measure temperature of lamp.

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Properties of Temperature and Brightness Applied on Frequency in Electrodeless Fluorescent Lamp (무전극 형광램프의 주파수 변화에 따른 온도 및 광속 특성)

  • Lee, Joo-Ho;Choi, Gi-Seung;Kim, Nam-Goon;Park, Noh-Joon;Park, Dae-Hee
    • Proceedings of the KIEE Conference
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    • 2006.07b
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    • pp.1273-1274
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    • 2006
  • In recent, it became necessary to develop the technology about electrodeless fluorescent lamp according to demand of the electrodeless fluorescent lamp system that used higher efficiency and advantage of long lifetime. Inductively coupled plasma is commonly used for electrodeless lamp due to its ease of plasma generation. An electric power efficiency of electrodeless fluorescent lamp has big relative property of gas in lamp, gas pressure, lamp formation, ingredients of magnetic substance and shape and action frequency etc. We used magnetic substance that open self-examination material of electrodeless fluorescent lamp antenna. Ferrite that is used in this experiment was Mn-Zn type. We have examined temperature and flux characteristic by frequency. Considering using frequency 2.65[MHz], Frequency was changed from 2.05[MHz] to 3.05[MHz] to recognize flux and temperature change of lamp. I used LMS(Lighting Measurement System) to measure flux and IR Camera to measure temperature of lamp.

  • PDF

Properties of Temperature and Brightness Applied on Frequency in Electrodeless Fluorescent Lamp (무전극 형광램프의 주파수 변화에 따른 온도 및 광속 특성)

  • Lee, Joo-Ho;Choi, Gi-Seung;Kim, Nam-Goon;Park, Noh-Joon;Park, Dae-Hee
    • Proceedings of the KIEE Conference
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    • 2006.07c
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    • pp.1733-1734
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    • 2006
  • In recent, it became necessary to develop the technology about electrodeless fluorescent lamp according to demand of the electrodeless fluorescent lamp system that used higher efficiency and advantage of long lifetime. Inductively coupled plasma is commonly used for electrodeless lamp due to its ease of plasma generation. An electric power efficiency of electrodeless fluorescent lamp has big relative property of gas in lamp, gas pressure, lamp formation, ingredients of magnetic substance and shape and action frequency etc. We used magnetic substance that open self-examination material of electrodeless fluorescent lamp antenna. Ferrite that is used in this experiment was Mn-Zn type. We have examined temperature and flux characteristic by frequency. Considering using frequency 2.65[MHz], Frequency was changed from 2.05[MHz] to 3.05[MHz] to recognize flux and temperature change of lamp. I used LMS(Lighting Measurement System) to measure flux and IR Camera to measure temperature of lamp.

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A study on Properties Condition for the most suitable design of the Ring-shaped electrodeless fluorescent lamp (환형 무전극 형광램프의 최적 설계를 위한 특성조건 분석)

  • Jo, Ju-Ung;Lee, Seong-Jin;Nam, Joong-Hee;Choi, Yong-Sung;Kim, Yong-Kab;Park, Dae-Hee
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2004.07a
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    • pp.211-214
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    • 2004
  • The advantage of ring-shaped electrodeless fluorescent lamp is the removal of internal electrodes and heating filaments that are a light-limiting factor of conventional fluorescent lamps. Therefore, the life time of ring-shaped electrodeless fluorescent lamps is substantially higher than that of conventional fluorescent lamps and last up to 60,000 hours and is intended as a high efficacy replacement for the incandescent reflector lamp in many applications. In this paper, maxwell 3D finite element analysis program(Ansoft) was used to obtain electromagnetic properties associated with the coil and nearby structures. The electromagnetic emitting properties were presented by 3D simulation software operated at 250[kHz] and some specific conditions

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Interfacial Defects in $SiO_2$-Glass Bond During VCR Head Fabrication (VCR 헤드 제조시 $SiO_2$박막과 유리의 계면 결함)

  • Yun, Neung-Gu;Hwang, Jae-Ung;Go, Gyeong-Hyeon;An, Jae-Hwan;Je, Hae-Jun;Hong, Guk-Seon
    • Korean Journal of Materials Research
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    • v.4 no.1
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    • pp.31-36
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    • 1994
  • The bonding behavior of $SiO_{2}$ thin film and glass during VCR head fabrication was investigated, varying the surface roughness of substrate and the sputtering parameter. Insufficient fillings of grooves In the $SiO_{2}$ film with glass was postulated to give rise to the generation of bubble in the glass. The surface roughness of $SiO_{2}$ film was found to depend on that of substrate. The lower the deposition rate, the smoother the surface of film. The bubble free glass after bonding could be obtained using substrate polished with 0.05$\mu\textrm{m}$ $Al_2O_3$ powder under the sputtering condition of 10% oxygen pressure.

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