Because it is a free version, PSpice 9.1 includes several constraints designed for educational use rather than professional production:
Sites like Auburn University and South Dakota School of Mines and Technology maintain legacy downloads for student coursework. pspice 9.1 student version free download
PSpice 9.1 Student Version is a legacy electronic circuit simulation tool widely used in electrical engineering curricula to model and analyze the behavior of analog and mixed-signal designs. Despite its age, it remains a popular choice for students due to its simplicity and the fact that it is provided as a free, "lite" version of the professional OrCAD software suite. Key Features and Capabilities Because it is a free version, PSpice 9
Simulation is restricted to circuits with a maximum of 64 nodes , 10 transistors, and 65 digital primitive devices. Key Features and Capabilities Simulation is restricted to
PSpice 9.1 Student Version Free Download: The Essential Article
Examines the effect of varying a DC source or parameter.
Observes time-varying effects in circuitry.