Capacitors are passive electronic components that store electrical energy in an electric field. They are used in a wide variety of electronic devices, from simple filters to complex power supplies.A capacitor is typically made of two conductive plates separated by an insulating material called a dielectric. When a voltage is applied across the plates, an electric field is created and charge is stored on the plates.The capacitance of a capacitor is measured in farads (F). The capacitance of a capacitor is determined by the size of the plates, the distance between the plates, and the type of dielectric material used.
Capacitors are used in a wide variety of electronic circuits, including: