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Energy Storage Devices for Electronic Systems by Nihal Kularatna

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4

Capacitors as energy storage devices—simple basics to current commercial families

Kosala Gunawardane

Abstract

An introduction to commonly used capacitors is provided with their technologies and general limits to appreciate the advantages, limits and sizes of commercial capacitors.

Keywords

Electrolytics

ceramics

tantalum

capacitor ratings

4.1 Capacitor fundamentals

A capacitor is a device that stores electrical charge and releases them when it is required by the circuit. The arrangement shown in Figure 4.1 illustrates the simplest configuration of a capacitor: two parallel conducting plates separated by a dielectric material (electric insulator) where parallel plates have an area A and separation d.

Figure 4.1 Construction of a parallel-plate ...

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