Comparison between the hottest aluminum electrolyt

2022-08-14
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Comparison between aluminum electrolytic capacitor and tantalum electrolytic capacitor

aluminum electrolytic capacitor has large capacity, large series resistance, large inductive reactance and is sensitive to temperature. It is suitable for occasions with little temperature change and low working frequency (not higher than 25kHz), and can be used for low-frequency filtering (the parallel filtering effect of electrolytic capacitors is worse at high frequency than that at low frequency). Aluminum electrolytic capacitors have polarity, so they must be installed with correct polarity, otherwise there is a risk of explosion

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compared with the aluminum electrolytic capacitor C. in the experimental process, the tension of the sling and various load-bearing indicators must meet the standard. Tantalum electrolytic capacitor has obvious advantages in series resistance, inductive reactance, temperature stability and so on. But its working voltage is low

1.3 times of the rated voltage of the aluminum electrolytic capacitor is used as the surge voltage of the capacitor. When the working voltage is higher than 160V, the rated working voltage +50v is used as the surge voltage, which is the voltage guaranteed by the manufacturer, and it is allowed to bear this voltage in a short time. When the capacitor is under surge voltage, the current will be very large, usually 10~15 times that of normal conditions. If the surface bonding strength time is too long, it will burst. Therefore, when selecting aluminum capacitors, the voltage should be slightly higher, and the actual working voltage should be 70~80% of the nominal voltage. (end)

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