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Main Functions Of Capacitors

Dec 17, 2018

五福彩票最新版charging and discharging are the basic functions of capacitors.

charging the process of charging capacitors with electricity (storing charge and electricity) is called charge. at this time, the capacitor's two plates are always one plate with positive charge, the other plate with an equal amount of negative electricity. the cathode of one plate connecting the capacitor to the power supply (such as the battery group) and the cathode of the other plate connecting the power supply, the two plates are respectively with the same amount of heterogeneous charge.

there is an electric field between the polar plates of the capacitor after charging, and the charging process stores the electrical energy obtained from the power supply in the capacitor.

discharge the process of losing charge (releasing charge and electrical energy) of a rechargeable capacitor is called discharge. for example, by connecting the poles of a capacitor with a wire and the charge on the poles neutralizing each other, the capacitor emits charge and electricity.

五福彩票最新版after discharge, the electric field between the polar plates of the capacitor disappears and the electrical energy is converted into other forms of energy.

五福彩票最新版in the general electronic circuit, the commonly used capacitors to achieve bypass, coupling, filtering, oscillation, phase shift and waveform transformation, these effects are the evolution of its charging and discharging functions. the role of capacitors in circuits: in dc circuits, capacitors are equivalent to circuit breakers.

五福彩票最新版capacitor is a kind of component that can store charge, and it is also one of the most commonly used electronic components. this has to be said in terms of the structure of the capacitor. the simplest capacitors are made up of the plates at both ends and the insulated dielectric (including air) in the middle. after electrification, the plate is charged to form a voltage (potential difference), but due to the insulating material in the middle, the entire capacitor is non-conductive. however, such a situation is not in excess of the capacitor's critical voltage (breakdown voltage) under the premise of the condition. we know that any substance is relatively insulated, and when the voltage at both ends of the material increases to a certain extent, the substance can conduct electricity, which we call a breakdown voltage. capacitors are no exception, and when the capacitance is penetrated, it is not an insulator.

五福彩票最新版however, at the secondary level, such voltages are not visible in the circuit, so they all work below the breakdown voltage and can be seen as insulators. however, in the ac circuit, because the direction of the current is a certain change in the function relationship over time. and the capacitor charging and discharging process has time, this time, in the plate between the formation of a change in the electric field, and this electric field is also a function of changes over time.

in fact, the current is passed between the capacitors through the form of a field. in the middle school stage, there is a sentence, called communication, resistance to dc, said is the nature of capacitance.


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Basic Introduction Of Capacitors

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