Qing Quan storage capacitor electronic drawing machine capacitor

Qing Quan electronic capacitors for everyone to talk about the role of the three - filter theory (assuming the capacitor is pure capacitive) said greater the capacitance, the smaller the impedance, the higher frequency through. But in fact most of the more than 1μF electrolytic capacitor capacitance, inductance great ingredients, so instead after high frequency impedance will increase. Sometimes you see a larger capacitance electrolytic capacitors in parallel with a small capacitance, then a large capacitor through the low-frequency, low capacitance through a high frequency. The role of the low-pass capacitor is high-impedance, low-pass frequency choke. Capacitance greater the more difficult by the low frequency. Specifically for use in filtering, large capacitor (1000μF) filter low-frequency, low capacitance (20pF) filter frequencies. Users had the image of the filter capacitor as a "pond." Since the voltage across the capacitor is not mutated, it can be seen, the higher the frequency the greater the attenuation can be very image of that capacitor like reservoirs, not by the addition of a few drops of water or evaporation caused by changes in water. It changes the voltage into current changes, the higher the frequency, the greater the peak current, so the voltage buffer. Filtering is the charging and discharging process. Qing Quan Electronics - aluminum electrolytic capacitor R & D and production experts! Factors affect the performance parameters of two aluminum electrolytic capacitors - aluminum electrolytic capacitor storage time after long-term storage, no voltage is applied, the oxide film is gradually thinned in the weak force was dissolved electrolyte, and thus the capacity, leakage current will increase , while the pressure is reduced. Therefore, storage falling aluminum electrolytic capacitors are not immediately available, you must first add a low voltage energization to the oxide film gradually repaired capacitor performance was stable.