Diffusion with Conductivity
Temperature balance has an important effect on soil formation and plant growth. In expressing the temperature balance of soils, thermo-physical properties such as Albedo (α ) coefficient, heat capacity (C), thermal conductivity coefficient (λ) and thermal diffusivity (a 2 ), which show the heat absorption property of soils, and the factors affecting them should be evaluated together. For this reason, factors such as soil moisture and mineralogy that affect the formation and changes of the thermo-physical properties of soils should be known. In order to determine the temperature balance in the lower layers of the soil, the thermal diffusion coefficients of the layers should be determined. It is possible to calculate the thermal diffusion coefficient of each layer theoretically, in accordance with the amplitude change in the soil surface and layers.
Electromagnetic compatibility (EMC) means that electronic and electrical systems and devices work normally in the electromagnetic environment they are in, without being affected by each other without making too much electromagnetic radiation themselves. For example, the height and frequency of electromagnetic waves emanating the radar system, transceiver radios or the microprocessor card that controls the operating systems of the aircraft operating in the same electromagnetic environment should work in harmony and without damaging each other. Basically, electromagnetic interference occurs in two ways. Some of them are caused by the help of cables used in these systems and devices (conduction by conductivity), and some by the conductivity of the air (radiation) without any contact with each other.
"Conducted Emission Test" is applied in order to determine the electromagnetic pollution levels emitted by transmission to networks such as energy or telecommunication networks to which an electrical or electronic device is connected.
The current and voltage values ??of the device or system are measured in the emission test processes made through conductivity. While measuring these parameters, the current is measured with the current probe and the voltage is measured with the LISN (Line Impedance Stabilization Network).
In the Harmonic Current Emmission Experiment, it is aimed to measure the current up to the 40th harmonic emitted by a device to the environment at a frequency of 50 Hz to the power lines it is fed. In the Voltage Fluctuations and Flicker Experiment, it is aimed to measure the voltage fluctuations and flickering created by the power lines that the device is fed.
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