Controlled circuit with a capacitive cell based on magnetodielectric fluid

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Abstract

We implemented a controlled oscillatory RLC circuit, in which a cell with a layer of magnetodielectric liquid is used as a capacitive element. The possibility of creating self-tuning inductive-capacitive elements based on a thin layer of magnetodielectric liquid is considered. It is shown that changing the properties of a magnetodielectric liquid in electric and magnetic fields makes it possible to create adjustable inductive-capacitive converters.

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About the authors

V. M. Kozhevnikov

North Caucasus Federal University

Author for correspondence.
Email: vkozhevnikov@ncfu.ru
Russian Federation, Stavropol

I. Yu. Chuenkova

North Caucasus Federal University

Email: vkozhevnikov@ncfu.ru
Russian Federation, Stavropol

Yu. A. Larionov

North Caucasus Federal University

Email: vkozhevnikov@ncfu.ru
Russian Federation, Stavropol

References

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Supplementary files

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2. Fig. 1. Series oscillatory circuit 1 — cell with a layer of MDJ, 2 — voltmeter, 3 — resistor (R1 = 100 Ohm), 4 — shunt (RШ = 100 Ohm), 5 — voltmeter, 6 — variable frequency generator, 7 — frequency meter, 8 — constant EMF source, 9 — inductors with parameters L = 2×0.11 H RL = 2×16 Ohm, 10 — phase difference meter.

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3. Fig. 2. Dependence of the resonant current of the circuit on the constant voltage UП: for a magnetic field layer thickness of (φ = 2%): 1 — d = 20 μm, 2 — d = 40 μm, 3 — d = 80 μm, 4 — d = 110 μm, 5 — d = 150 μm, 6 — d = 220 μm (a); for a layer thickness of d = 80 μm and repeated exposure to constant voltage (b); for a layer thickness of d = 150 μm (φ=2%) and magnetic field strength: 1 — H = 0; 2 — H = 7 kA/m (c).

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4. Fig. 3. Change in effective permittivity and electric current from constant voltage: × — magnetodielectric liquid layer, o — magnetodielectric liquid with additional effect of magnetic field of 50 Oe, ● — in kerosene layer, Δ — volt-ampere characteristic.

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5. Fig. 4. Change in the electrical parameters of a cell with an MDJ layer under the action of a polarizing voltage. Change in capacitance ∆C (a). Distance between electrodes 1-5 μm; 2-10 μm; 3-80 μm; 4-100 μm. Change in conductivity of a cell ∆G with an MDJ layer under the action of a polarizing voltage (b). Distance between electrodes 2-10 μm; 3-80 μm; 4-100 μm.

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