THE APPLICATION OF CONTROLLED SOURCES IN SIMULATIONS OF DIRECT CURRENT NON-LINEAR CIRCUITS

Abstract

The article presents examples of application of controlled sources for determining currentvoltage characteristics of non-linear elements. The precise determination of element characteristics is the key element for circuit calculation due to graphic ways of solving direct current non-linear circuits. The next step is adequate adding of element characteristics according with certain rules. The method of REPLACEMENT characteristics and method of characteristics crossing to determine certain circuit currents and circuit voltage were illustrated using three calculation examples. The application of current-controlled voltage sources (with POLY instruction) made it possible to PLOT/DETERMINE non-linear element characteristics in the form of polynomial. Non-linear elements characteristics presented in form of a TABLE/CHART including the coordinates of their points (voltage, current) were PLOTTED/DETERMINED thanks to the application of voltage controlled current sources (also with TABLE instruction). The calculations were conducted using PSpice program, which is a very popular program used for computer analysis of electric and electronic circuits.