ABSTRACT

The capacitor is a widely used electrical component and it has several features that make it useful and important. A capacitor is a device capable of storing electrical energy. If the plates are disconnected from the supply and connected together through a resistor the surplus of electrons on the negative plate will flow through the resistor to the positive plate. When connected in series the charge on each capacitor is the same. The maximum amount of field strength that a dielectric can withstand is called the dielectric strength of the material. Electrical double-layer capacitors (EDLC) are, together with pseudo capacitors, part of a new type of electrochemical capacitor called super capacitors, also known as ultra capacitors. Inductance is the property of a circuit whereby there is an electromotive force (e.m.f.) induced into the circuit by the change of flux linkages produced by a current change.