Abstract
Electrical capacitor is one of the most. popular and widely used electric circuit elements storing electric field energy. Due to its mechanical structure, electric field distribution could not uniform at the edges of electrode plates constructing the capacitor. This field distortion is so called edge effect.
Principal purpose of this paper is to minimize the edge effect, so that it enables us to optimize the shape of electrodes leading to the maximum capacitance but minimum size. To realize this purpose, it is essential to compute the electric fields around capacitor exactly.
The electric fields around the capacitor theoretically distribute to an infinitely long distance point. In order to take into account this electric field nature rigorously, in this paper, we employ the strategic dual image (SDI) method along with conventional first order triangular finite element method.
