sentence: Electrolytic capacitors use a conducting surface inside a liquid electrolyte.
sentences_after: They have polarity and so they have to be attached correctly. This means one lead is 'positive' and one is 'negative'. The rating of an electrolytic capacitor is easy to find because they are printed with capacitance and voltage rating.
concept_name: electrolytic capacitor
headings: Capacitor Electrolytic capacitors
categories: Electronic components