• Title/Summary/Keyword: Magnetics

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A study on ZVS Half-Bridge converter Using IM(Integrated Magnetics) (IM(Integrated Magnetics)방식을 적용한 ZVS 하프브리지 컨버터에 관한 연구)

  • Lee, Dae-Hyuk;Kim, Yong;Bae, Jin-Yong;Kim, Pill-Soo;Cho, Gyu-Man
    • Proceedings of the KIEE Conference
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    • 2005.04a
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    • pp.164-167
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    • 2005
  • This paper present ZVS Half-Bridge converter Using IM(Integrated Magnetics). In converter system, magnetic components are important devices used for energy storage, energy transfer, galvanic isolation and filtering. The purposes of IM(Integrated Magnetics) are to reduce the number of magnetic components and voltage/current ripple. This topology is use of three magnetics components thus increasing the cost and size of the system. A prototype featuring 300V input, 15V output, 400kHz switching frequency, and 150W output power.

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Effect of the Dong Shi Acupuncture Therapy on the Relief of Premenstrual Syndrome and Dysmenorrhea in Female College Students (동씨침(董氏針) 기혈(奇穴)을 이용한 자기요법(磁氣療法)이 여대생의 월경전증후군 및 생리통에 미치는 효과)

  • Kim, Gyeong-Cheol;Kim, Yi-Soon;Kwak, Yi-Sub;Yang, Han-Joo
    • Korean Journal of Acupuncture
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    • v.28 no.1
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    • pp.71-78
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    • 2011
  • Objectives : This study is to determine the effects of magnetics therapy on the relief of premenstrual syndrome and dysmenorrhea among female college students. Methods : 20 female college students in a university are selected to the experimental group. All of the subjects have the score of more than 6 on the visual analogue scale for measuring the level of premenstrual pain. The data was collected by using questionnaires. The magnetics therapy on the Dong Shi Acupuncture Therapy extra points (婦科, 還巢, 木婦, 門金) was administered to the experimental group. Results : The results were as follows. The first hypothesis is supported ; the experimental group who received magnetics therapy on the Dong Shi Acupuncture will decrease premenstrual syndrome. The second hypothesis is supported ; the experimental group who received magnetics therapy on the Dong Shi Acupuncture will decrease dysmenorrhea. Conclusions : As a result of this study, magnetics therapy on the Dong Shi Acupuncture will be able to be used as the self care therapy to improve the symptoms of females with the premenstrual syndrome and dysmenorrhea.

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  • Kim, Yu-Seong;Gwon, Sun-Ju;O, Jae-Hui
    • Journal of the Korean Magnetics Society
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    • v.2 no.3
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    • pp.296-296
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    • 1992