Compartmental analysis of dielectric absorption in capacitors (original) (raw)

This paper proposes a method of studying and modcling the dielcctric absorption in capacitors. Because of dielectric absorption, thc voltage on a charged capacitor partially recovers aftcr momentarily shorting its terminals. The magnitude of this voltage recovery depcnds mainly an the dielectric material. Dielcctric absorplian causes errors in some analog applications based on charging and discharging of capacitors, such as samplc-and-hold circuits, integrators and active filters. Designing compensation circuits bawd on models of thc dielectric absorption can reduce these errors. This paper pments an analytical method to build a mathematical model of the diclectric absorption, and an equivalent electrical circuit, The method is based on compartmental analysis theory, mostly used in medicine and biology to study the kinetics of substances in biological systems.