Types of Capacitors

Polar Capacitors

They have positive and negative terminals like a battery

Electrolytic capacitors are polar capacitors. 

There are two types of electrolytic capacitor: Radial and Axial.


If connected with exceeding voltage source or wrong polarity, the electrolytic may literally explode because it contains dangerous chemicals.

The higher the capacitance of the electrolytic capacitor, the bigger the capacitor. 

The longer leg is Positive.
The shorter leg is Negative.














Non-Polar Capacitors
-It has no polarity.

Ceramic capacitors are non-polar capacitors. They have a very small capacitance value so their energy capacity is also small. Most ceramic capacitors are orange in colar and are rough.  

Variable Capacitor

Their capacitance can be adjusted to different values.