The electrolytic capacitors, briefly called capacitors, is polarized capacitors in which the anode electrode made of a certain metal (tantalum, aluminum or niobium), on the electrolysis, a very thin, electrically insulating layer is formed which forms the dielectric of the capacitor. The electrolyte may be either liquid or solid. It forms the cathode electrode which has to adapt to the anode exactly. Especially with the liquid electrolyte can be reached particularly high capacity. This makes them an ideal power storage. Find use electrolytic capacitors including as decoupling capacitors for power supply voltages.