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http://dx.doi.org/10.6109/JKIICE.2009.13.12.2685

Commercial frequency AC discharge magnetic stimulation operating characteristics  

Kim, Whi-Young (동주대학 의료기공학과)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.13, no.12, 2009 , pp. 2685-2692 More about this Journal
Abstract
We propose pulsed magnetic stimulation below 30W by the AC(60Hz) switching control of leakage transformer primary which has some advantage of cost and size compared to a typical pulsed power supply. Pulse repetition rate is adjusted from 5Hz to 60Hz to control magnetic stimulation output. In this magnetic stimulation, a low voltage open loop control for high voltage discharge circuit is employed to avoid the HV sampling or switching and high voltage leakage transformer is used to convert rectified low voltage pulse to high voltage one. A ZCS(Zero Cross Switch)circuit and a DSP & FPGA are used to control gate signal of SCR precisely. The pulse repetition rate is limited by 60Hz due to the frequency of AC line and a high leakage inductance. The maximum magnetic stimulation output was obtained about 33W at pulse repetition rate of 60Hz, total 40, 80, 120, $160^{\circ}$, SCR gate trigger angle $90^{\circ}$ and total output.
Keywords
pulsed; magnetic; stimulation; high voltage; discharge;
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1 Amassian, V. E. et al. Suppression of visual perception by magnetic coil stimulation of human occipital cortex. Electroencephalogr. Clin. Neurophysiol. 74, 458–462 (1989)   DOI   ScienceOn
2 Haggard, P. & Eimer, M. On the relation between brain potentials and the awareness of voluntary movements. Exp. Brain Res. 126, 128–133 (1999)   DOI   ScienceOn
3 Fink, G. R. et al. The neural consequences of conflict between intention and the senses. Brain 122, 497–512 (1999)   DOI   ScienceOn
4 Handforth A, Degiorgio CM, Schacter SC. Vagus nerve stimulation therapy for partial-onset seizures, a randomized active-control trial. Neurology 1998;51:48   ScienceOn
5 김휘영, 금속판으로 구성된 자기치료기용 코일 프로브, 특허번호10-0924948 특허청, 2009.10.28
6 Barker, A. T., Jalinous, R. & Freeston, I. L. Noninvasive magnetic stimulation of human motor cortex. Lancet 1, 1106–1107 (1985)
7 김휘영, 출력조절이 가능한 자기치료기용 코일 프로브, 특허번호10-0846093 , 특허청, 2008.7.8
8 Blakemore, S. J., Wolpert, D. M. & Frith, C. D. Why can't you tickle yourself Neuroreport 11, 11–16
9 김휘영, 냉각기능이 구비된 자기치료기용 코일프로브, 특허번호10-0816255 특허청, 2008.3.17
10 Fulwiler CE, Saper CB. Subnuclear organization of the efferent connections of the parabrachial nucleus in the rat. Brain Res Rev 1984;7:229–59
11 Hauser WA, Hesdorffer DC. Epilepsy: frequency, causes, and consequences. New York: Demos, 1990:151