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Features Of Aluminum Electrolytic Capacitors

wallpapers Industry 2021-01-26
Aluminum is a silver-white light metal. There is malleability. Commodities are often made into rods, sheets, foils, powders, ribbons and filaments. It can form an oxide film to prevent metal corrosion in humid air. Aluminum powder and aluminum foil can burn violently when heated in the air and emit a dazzling white flame.
 
Features of aluminum electrolytic capacitors
 
1) Advantages: The oxide film has a self-healing effect; the price is cheap; the capacity per unit volume is large; relatively speaking, the voltage can be higher;
Both tantalum electrolysis and niobium electrolysis cannot achieve 200V, while aluminum electrolysis can achieve 730V abroad.
2) Disadvantages: large leakage current; large loss, poor frequency characteristics (the original switching power supply|stabilizer was only 40KHZ, now 100KHZ, preferably 1MHZ)
 
The naming of electrolytic capacitors
 
Domestic: CD11 stands for aluminum electrolytic capacitor
C——general name of capacitor; D——material (aluminum electrolysis); 11——lead type (one-way lead)
CD10-axial aluminum electrolytic capacitor; CD26-wide temperature aluminum electrolytic capacitor;
 
Nominal law of capacity
 
E6: ±20 (M), E12: ±10 (K), E24: ±5 (J)
 
Cold deformation strengthening
 
Cold deformation strengthening is also called cold work hardening, that is, the metal material is cold deformed below the recrystallization temperature. During cold deformation, the internal dislocation density of the metal increases, and they entangle each other to form a cellular structure, which hinders the movement of dislocations. The greater the degree of deformation, the more serious the dislocation entanglement, the greater the deformation resistance and the higher the strength. The degree of strengthening after cold deformation varies with the degree of deformation, deformation temperature and the properties of the material itself. When the same material is cold deformed at the same temperature, the greater the degree of deformation, the higher the strength. Plasticity decreases as the degree of deformation increases.

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