Abstract
Some new models for nonlinear capacitors and nonlinear inductors built with SPICE-like element primitives are presentedhere. They have the advantage that they can be used for simulation in SPICE of those circuits which contain nonlinearcapacitors controlled either in voltage or in charge, and nonlinear inductors controlled either in current or in flux. TheseSPICE-like models contain current sources whose controlling variables are charge time-derivative and sources whosecontrolling variables are flux time-derivative. For validation, the models are included in nonlinear circuits; their behavior isstudied by simulation using two different simulators and the results are compared.
Highlights
INTRODUCTIONSPICE is one of the most well-known electrical circuit simulators, being used in the educational or research activities, and in industry, for computer-aided circuit design of analog circuits [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19]
In order to be validated, these models are implemented in electric circuits and their behavior is analyzed by using two different software packages: SPICE - as commercial software, and ENCAP (Electrical Nonlinear Circuit Analysis Program) - our original program for analog circuit analysis [8]
The proposed models contain either voltage sources whose controlling variables are current time-derivatives (CTDCVS) or current sources whose controlling variables are voltage time-derivatives (VTDCCS). For this reason we firstly present the models of these controlled sources that uses equivalent circuits containing only primitive circuit elements accepted by SPICE
Summary
SPICE is one of the most well-known electrical circuit simulators, being used in the educational or research activities, and in industry, for computer-aided circuit design of analog circuits [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19]. As a generally accepted recognition, it represented the basis for the development of new software packages used for the simulation of the electric and electronic circuits These programs meet a continuous development to correspond to the new requirements demanded by the customer. If the initial programs were simple, containing only the basic elements of the electric circuits, today the software library is extremely complex, including the electronic components of some well-known manufacturers, and elements corresponding to some complex circuit structures with practical applicability. In this way the costs of acquiring a SPICEtype software package increased significantly. For this reason we firstly present the models of these controlled sources (undefined in SPICE) that uses equivalent circuits containing only primitive circuit elements accepted by SPICE
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