The capacitance in the electronic component should be our most familiar, it is widely used and a wide variety. Today we will talk about the most wide range of electrolytic capacitors in the capacitance.

The maximum difference between electrolytic capacitors and other capacitors is that the electrolytic capacitance has a positive and negative polar, it is important to pay attention when in use, because once an error is used in the DC loop, there is an explosion risk. Different electrolytic capacitance identification methods are different, we will come to know today.

Bolt-type electrolytic capacitance

The bolt type aluminum electrolytic capacitor has a clear positive and positive and positive and positive and positive and positive and positive and positive and negatives, and "+" is used to indicate "+". Most bolt capacitors are engraved with "+", "-" next to the terminals on the cover, as shown below:

Welds aluminum electrolytic capacitor

Welds aluminum electrolytic capacitors are also called an angry capacitance. All manufacturers are currently using the "negative logo", that is, the solder needle corresponding to the casing "-" identification is negative. The solder sheet electrolytic capacitor is also distinguished on the cover, most of which is identified by the negative "embossed", and there is also an electrolytic capacitor manufacturer printed "+", "-" sign on the rivet, as shown below :

Lead structure electrolytic capacitor

The lead structural electrolytic capacitance is also an negative electrode that is adopted "negative electrode identification", that is, the tube "-" identification. There is also the length of the lead in the length of the lead, the long lead is the positive electrode, the short lead is negative, as shown in the figure below:

Patch aluminum electrolytic capacitor

The sheet aluminum electrolytic capacitor is no sleeve, so the capacity, voltage, positive and negative poles, etc. are printed at the bottom of the aluminum shell, as shown in the following figure, has a negative electrode.

The above is the distinction method of the electrolytic capacitor is a negative polarity. Everyone pays more attention to the electrolytic capacitance in the future, it can avoid danger!