

For example, you can not use a math expression to define the BETA parameter of a BJT.
#Macspice plot examples manual
The 'correct' usage is presumably defined by Spice 3f3 or similar, but the stuff I can find online is not clear what 3f3 requires.Īfter reading the Spice 3f3 manual I believe the reason for this is simply that Spice 3f3 doesn't allow parameter substitutions in many of the places that newer SPICEs do. It's unfortunate, but something that you'll have to live with, that there is no official standard defining SPICE syntax, and particularly in the area of mathematical expressions different SPICEs have different syntax. Ngspice is actually based on the SPICE 3f5 code-base, so it is more likely (but not guaranteed) that ngspice syntax will be similar to SPICE 3f3. You should not expect LTSPICE or PSPICE to follow the SPICE 3f3 syntax, or to match each other. Here are four plot examples from literature to give you an idea of how you can use the fundamental plot structure while still making your story entirely your own. These are three different programs and their authors have defined different syntax for mathematical expressions. The usage for PSPICE is defined by the manual for PSPICE. The usage for LTSPICE is defined by the manual for LTSPICE. PLOT to obtain two DC and two AC voltages from a circuit is. Still, 50 for the meal, which included a couple of pints, was decent value. The usage for SPICE 3f3 is defined by the manual for SPICE 3f3. PLOT TRAN V(3) V(4) A method to obtain excellent graphical plots on the Macintosh or IBM computers using PSpice is to include the.
