Launch Proteus and open a new schematic project. Select the "2D Graphics Box Mode" from the toolbar, then choose "Component" as the mode type.
C:\Program Files (x86)\Labcenter Electronics\Proteus 7 Professional\LIBRARY lm2596 proteus library download updated
Copy the newly created .LIB and .IDX files to this LIBRARY directory. Launch Proteus and open a new schematic project
A 100µF electrolytic capacitor at the input and a 330µF capacitor at the output for filtering. lm2596 proteus library download updated
: These hold the actual schematic graphics and simulation parameters. Step-by-Step Installation Guide