DEVICE FOR THE INVESTIGATION OF THE INFLUENCE OF LOW FREQUENCY RADIATION FIELD ON BIOLOGICAL OBJECTS
Journal Title: Вісник Національного університету "Львівська політехніка", серія "Радіоелектроніка та телекомунікації" - Year 2017, Vol 885, Issue 2017
Abstract
The question of creation of a device for the formation of an electric and magnetic ultra-low frequency (ULF) radiation field is considered, which in the future will be used to study its effect on living biological objects. The structural scheme of such device is developed, its basic technical parameters are determined. The questions of construction of its separate units are considered. Scientists of the Kharkiv National University named after V. N. Karazin established the effect of microwave radiation on the indicators of cell membrane permeability and cell viability. It is likely that these general indicators also change under the influence of ULF. The study of these indicators will provide information on both the mechanism of impact of ULF on the cell, and on the potential impact on the human body. In this regard, it is important to study the cells of people with a high sensitivity to the action of electromagnetic factors. The application of precision magnetic field generators with wide functional capabilities will increase the accuracy and informativeness of investigations of the influence of an external electromagnetic magnetic field on biological objects. The structural scheme of the device for forming an electric and magnetic field on biological objects is developed. It consists of a control unit, a set generator, a matching amplifier, a quadrature signal former for generating an electric field loaded on static plates, an electromagnetic fieldformer loaded on inductance coils which converts the current that flows through them into an electromagnetic field. The instrument for studying the influence of the ultrashort electromagnetic and electrostatic field on biological objects has been developed. It provides the formation of two quadrature signals with an amplitude of 5 V. The amplitude of the signal varies discretely with a step of 0.1 V. The signal frequency is regulated in the range 10 Hz – 1000 Hz with a step of 10 Hz. The electrostatic field is formed by plates. The capacity of the plates does not exceed 1000 pF. The amplitude of the signal forming the electrostatic field is amplified to 200 V. The electromagnetic field is formed by special coils of inductance, which consist of two windings. Structurally the coils are made on a ferrite core. Coil inductance does not exceed 4 mH. The electromagnetic field is formed by a current flowing through the windings of the coil. For9 current formation, converter voltage-current is used. The converter is made according to the scheme of the DC amplifier with a deep feedback on the current. Maximum amplitude of current in inductive load at the highest signal frequency is 200 mA.
Authors and Affiliations
Volodymyr Shkliarskyy, V. Hrycay, T. Smarkutskyi
Keywords
Related Articles
- EP ID EP456368
- DOI -
- Views 100
- Downloads 0
ІСТОРИЧНІ СИМВОЛИ РАДІОТЕХНІЧНОГО ФАКУЛЬТЕТУ ЛЬВІВСЬКОЇ ПОЛІТЕХНІКИ
Історія радіотехнічного факультету (сьогодні Інституту телекомунікацій, радіоелектроніки та електронної техніки) Львівської політехніки, якому в 2017 році виповнилось 65 років/
GEOMETRY OPTIMIZATION OF LINEAR ELECTRO-OPTIC EFFECT IN LiNbO3:MgO CRYSTALS
The global maxima of linear electro-optic effect are determined for LiNbO3:MgO crystal by extreme surfaces method. As it is shown, the maximal achievable values of the reduced optical pathlength changes for the ordinary...
STUDY OF ERRORS OF COMBINED STEREO RASTERS
Stereo television scanning optical microscope (STSOM) – is a microscope, its operating principle is based on using as the light source cathode ray tubes (CRT). Using STSOM which provide three-dimensional perception of th...
MODELING OF CURVILINEAR FILAMENT STRUCTURE IN THE WAVEGUIDE
Well known current filament modeling method is frequently for electrodynamic structures analysis in free space and in waveguide used. In both cases the electrodynamic analyse principles are the same. The current filament...
INVESTIGATION OF STABILITY OF PARAMETRIC AMPLIFIERS IN AN ENVIRONMENT MAOPCs
The paper considers the question of the research of assessment of the stability of linear periodically time-variable circuits by the frequency symbolic method. The function system MAOPCs, which is based on the frequency...