Q: Dingfeng Capacitor -- What is the difference between electrolytic capacitors and ordinary capacitors?

A: Electrolytic capacitors generally have a positive and a negative polarity, that is, have a polarity. Therefore, the positive and negative electrodes cannot be connected incorrectly when used in the circuit. It is now possible to manufacture electrolytic capacitors that are non-polar or for AC circuits, called bipolar electrolytic capacitors or non-polar electrolytic capacitors.

Electrolytic capacitors can only be used in the range of -20 ° C ~+70 ° C. The characteristics are greatly affected by temperature and frequency.Aluminum electrolytic capacitors are commonly used. The type of aluminum electrolytic capacitor is generally CDXX.

Electrolytic capacitors have a very large capacitance per unit volume,which is tens to hundreds of times larger than other types of capacitors.

The rated capacity of electrolytic capacitors can be very large and can easily be tens of thousands of μf or even a few f.

The price of electrolytic capacitors is superior to other types because the constituent materials of electrolytic capacitors are common industrial materials such as aluminum. The equipment for manufacturing electrolytic capacitors is also an ordinary industrial equipment, which can be mass-produced and has relatively low cost.

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