Allowable Component Values

Element values in the Component Library must be positive real numbers between 1E-21 and 1E21 inclusive.  Although values in this range are accepted by the Component Library, limitations of digital computing may return unexpected results if the entered values are very large or very small.  Component values in the range of generally available electrical components are recommended for best results.

EMI Analyst uses double-precision floating point numbers, which are limited to 15 decimal places of accuracy.  When very large or very small numbers are computed this limitation may produce in erroneous results.  This phenomenon is not a limitation of EMI Analyst, but rather is a limitation of digital computers and is inherent in all computations in all programs.  However, because EMI Analyst performs computations that may involve a very wide range of numeric values, care must be taken not to use unnecessarily large or small values.  Wherever possible, EMI Analyst will flag the user when values computed may have been compromised by this limitation.

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