Electrolytic Capacitors are generally used in DC power supply circuits due to their large capacitance's and small size to help reduce the ripple voltage or for coupling and decoupling applications.

When should I use electrolytic capacitors?

Electrolytic capacitors are used for filtering, decoupling, signal coupling, time constant setting, and DC blocking in medium and low frequency circuits.

What is the main advantage of electrolytic capacitors over other types of capacitors?

Electrolytic capacitors have a greater capacitance per volume than any other type of capacitor. Because of this size difference, few non-electrolytic capacitors are made with capacitance greater than 10 microfarad (uF).