Investigation of processes in a set for biocell modification by means of a magnetic field using an alternative current source with high output resistance

In the article, errors that occur when using the most common current sources with low output resistance (voltage amplifiers), feeding coils of biological object modification sets by means of a magnetic field are identified with the aid of the proposed modeling methods. To exemplify the operability of the models under consideration, oscillograms of changes in the magnetic field induction time in the coil of the set, when it is powered by a voltage amplifier having a low output resistance, are given. As an alternative, it is suggested to employ a developed and assembled specialized current source with a high output resistance, voltage-controlled (ITUN), designed to work with an inductive load. The magnetic field, generated by the coil of the set, fully corresponds to the current, flowing through it from the current source. The article describes the layout of such current source, as well as a high-speed system for limiting the input signal, which enables the protection of the circuit power elements from overloads that occur when working on an inductive load. As an illustration of the effectiveness of the magnetic field creation method, the oscillograms of the change from the induction time of the magnetic field produced in the coil of the set, when it is powered from the current source layout, are presented. In order to implement the layout of the magnetic set and monitor the state of the magnetic field being measured, a high-speed magnetometer was additionally designed and built, which allows reading data in real time.

1. Yakovleva M.I. Fiziologicheskie mekhanizmy dejstviya elektromagnitnyh polej. L.: Medicina; 1973. 175 p. (In Russ.)

2. Gichev Yu.P., Gichev Yu.Yu. Vliyanie elektromagnitnyh polej na zdorov'e cheloveka = Alleged health effects of electromagnetic fields. Novosibirsk: GPNTB; 1999. 90 p. (In Russ.)

3. Spodobaev YU.M., Kubanov V.P. Osnovy elektromagnitnoj ekologii. M.: Radio i svyaz'; 2000. 239 p. (In Russ.)

4. Slukin V.M. Tekhnogennye elektromagnitnye izlucheniya kak faktor ekologii naselennyh prostranstv. Akademicheskij vestnik UralNIIproekt RAASN. 2010;4:112–116. (In Russ.)

5. Aleksandrov Yu.A., Ostapenko A.A, Gentosh A.V. Issledovanie urovnya elektromagnitnyh izluchenij ot nekotoryh tekhnicheskih ustrojstv. Vestnik Priazovskogo gosudarstvennogo universiteta = Reporter of the Priazovskyi State Technical University. 2014;28:188–199. (In Russ.)

6. Maslov M.Yu., Spodobaev M.Yu., Spodobaev Yu.M. Elektromagnitnyj monitoring megapolisa. Trudy nauchno-issledovatel'skogo instituta radio. 2013;4:5–11. (In Russ)

7. Dovgusha V.V., Tihonov M.N., Dovgusha L.V. Vliyanie estestvennyh i tekhnogennyh elektromagnitnyh polej na bezopasnost' zhiznedeyatel'nosti. Ekologiya cheloveka = Human ecology. 2009;12: 3–9. (In Russ.)

8. Tihonov M.N., Dovgusha V.V., Dovgusha L. V. Mekhanizm vliyaniya estestvennyh i tekhnogennyh elektromagnitnyh polej na bezopasnost' zhiznedeyatel'nosti. Vestnik obrazovaniya i razvitiya nauki Rossijskoj akademii estestvennyh nauk = Herald of Education and Science Development of the Russian Academy of Natural Sciences. 2014;18(4):11–21. (In Russ.)

9. Koh E.K., Ryu B.K., Jeong D.Y., Bang I.S., Nam M.H., Chae K.S. A 60-Hz sinusoidal magnetic field induces apoptosis of prostate cancer cells through reactive oxygen species. International Journal of Radiation Biology. 2008;84(11):946–947.

10. Schuderer J., Oesch W., Felber N., Spat D., Kuster N. In vitro exposure apparatus for ELF magnetic fields. Bioelectromagnetics. 2005;25(8):582–591.

11. Bassen H., Litovitz T., Penafiel M., Meister R. ELF in vitro exposure systems for inducing uniform electric and magnetic fields in cell culture media. Bioelectromagnetics. 1992;13(3):183–198.

12. Huang E.Ch., Chang Ch.W., Chen Ch.R., Chuan Ch.Y., Chiang Ch., Shu W.Y., Fan T.C., Hsu I.C. Extremely low-frequency electromagnetic fields cause G1 phase arrest through the activation of the ATM-Chk2-p21 pathway. PLoS ONE. 2014;9(8):8.