capacitance,decreasing temperature, the viscosity of the electrolyte, capacitance changes

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capacitance,decreasing temperature, the viscosity of the electrolyte, ...
Posting date : Jun 10, 2014
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Anode foil and a cathode foil facing each other are interleaved with electrolytic paper and wound into a cylindrical shape. This is called a "capacitor element." At this stage, it has configuration of a capacitor when considers electrolytic paper and the aluminum oxide layer to be dielectric, however, the unit has few capacitance. When this capacitor element is impregnated with liquid electrolyte, the anode foil and cathode foil are electrically connected. With the aluminum oxide layer formed on the anode foil acting as the sole dielectric, a capacitor with a high value of capacitance is now attainable. That is to say that the electrolyte is now functioning as a cathode. The basic characteristics required of an electrolyte are listed below: Electrolytic capacitors for DC applications require polarization . Confirm the polarity before use . The circuit life may be shortened or the capacitor may be damaged if insert in reversed polarity . For use on circuits whose polarity is occasionally reversed , or whose polarity is unknown , use non-polar capacitors . Also note that the electrolytic capacitors cannot be used for AC applications .

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