Download NL5 Non-Linear Electronic Circuit Simulator


Posted on Feb 6, 2014

Since then NL has evolved into the Microsoft Windows ®-based NL4, which has been used extensively by world-class engineers in different fields of electronics for almost 10 years. NL5 is the first version to be publicly available. Unlike conventional SPICE-based simulators, which pretend to perform accurate simulation of electronic circuits using complex and


Download NL5 Non-Linear Electronic Circuit Simulator
Click here to download the full size of the above Circuit.

detailed non-linear component models with dozens of parameters, the NL5 approach is quite different. First, NL5 deals with ideal components as much as possible. An ideal component is one that provides just a basic functionality required for component of that type. As a rule, it is very simple and described by a minimal number of parameters. As a result, its behavior is clear and predictable. For example, an ideal switch has zero resistance when closed, infinite resistance when open, and it is switching instantly. For such a switch no parameters are required at all. Second, non-linear components (e. g. diodes, transistors, or amplifiers) are represented as piecewise linear (PWL): consisting of a number of linear segments. For instance, a simple diode is either open or closed, so that its PWL representation consists of just two segments. As long as all of the components are staying within their current linear segment, the same system of linear equations can be used. The system is modified only at the moments when at least one component changes its linear segment. This can always be done much faster than solving complex non-linear equations at almost every step of simulation, which is what SPICE-based simulators usually do. Understanding these NL5 principles gives users full control of the simulation process. Using ideal components with simple PWL models results in an extremely fast simulation, and gives a general idea of...




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