Journal of Magnetics

The Korean Magnetics Society (한국자기학회)
권호 표지
DOI QR코드

DOI QR Code

Design of Alternating Magnetic Field Stimulator Using Duty Factor

  • Jang, Tae-Sun (Department of Oriental Biomedical Engineering, Sangji University) ;
  • Lee, Jin-Yong (Department of Oriental Biomedical Engineering, Sangji University) ;
  • Lee, Hyun-Sook (Department of Oriental Biomedical Engineering, Sangji University) ;
  • Kim, Sun-Wook (Department of Oriental Biomedical Engineering, Sangji University) ;
  • Hwang, Do-Guwn (Department of Oriental Biomedical Engineering, Sangji University)
  • Received : 2011.09.19
  • Accepted : 2012.02.27
  • Published : 2012.03.31
Download PDF
⟨ Previous Next ⟩

Abstract

We have developed an alternating magnetic field stimulation system consisting of a switched-mode power supply and a digital control circuit which modulates a duty ratio to maintain a magnetic field intensity of a few mT even while the frequency increases up to 4 kHz with a controllable coil temperature below $30^{\circ}C$ in air. This duty ratio modulation and water circulation are advantageous for cell culture under ac-magnetic field stimulation by preventing the incubator from exceeding a cell-viable temperature of $37^{\circ}C$. Although the temperature of the coil when subjected to a sinusoidal voltage rapidly increased, that of our system modulated by the duty factor did not change. This is a potentially valuable method to investigate the effects of intermediate frequency magnetic field stimulation on biological entities such as cells, tissues and organs.

Keywords

References

  1. P. Lovsund, Ph.D. dissertation, 47 Linkoping University, Sweden (1980).
  2. W. R. Rogers, J. H. Lucas, W. E. Cory, J. L. Orr, and H. D. Smith, Bioelectromagnetics 3, 2 (1995).
  3. WHO, Environmental Health Criteria, 238 (2007).
  4. A. Fujita, Y. Kawahara, S. Inoue, and H. Omori, Bioelectromagnetics 31, 156 (2010).
  5. J. Lee, I. Go, J. Choi, T. S. Jang, S. H. Shin, H. S. Lee, D. G. Hwang, and S. Kim, J. Magnetics 15, 209 (2010). https://doi.org/10.4283/JMAG.2010.15.4.209
  6. D. Dallari, M. Fini, G. Giavaresi, N. D. Piccolo, C. Stagni, L. Amendola, N. Rani, S. Gnudi, and R. Giardino, Bioelectromagnetics 30, 423 (2009). https://doi.org/10.1002/bem.20492
  7. T. Shigemitsu, T. Negishi, K. Yamazaki, Y. Kawahara, A. Haga, K. Kobayashi, and K. Muramatsu, Bioelectromagnetics 30, 36 (2009). https://doi.org/10.1002/bem.20439
  8. I. Nishimura, S. Imai, and T. Negishi. Bioelectromagnetics 30, 573 (2009). https://doi.org/10.1002/bem.20513
  9. J. Malmivou and R. Plonsey, Bioelectromagnetism, Oxford University Press, Oxford (1995) p. 33.
  10. J. W. Choi, S. C. Shin, S. Kim, E. R. Chung, J. H. Bang, G. I. Cho, S. D. Choi, Y. S. Park, T. S. Jang, Y. M. Yoo, S. S. Lee, and D. G. Hwang, J. Appl. Phys. 107, 09B306 (2010). https://doi.org/10.1063/1.3357349

Cited by

  1. Dependence of Alternating Magnetic Field Intensity on Proliferation Rate of Human Breast Cancer Cell vol.20, pp.3, 2015, https://doi.org/10.4283/JMAG.2015.20.3.290