: You drop the new files into the folder. Like magic, after a quick restart of the software, the LM2596 appears in the "Pick Devices" list.
However, when moving from a physical breadboard to a virtual simulation environment like Proteus Design Suite (ISIS), many engineers and students hit a common roadblock: lm2596 library for proteus
Vin (12V) ---> C_in (100µF) ---> Pin 1 (Vin) of LM2596 Pin 2 (Output) ---> L1 (33µH) ---> Vout (5V) |--- D1 (1N5822) ---> GND Pin 3 (GND) ---> GND Pin 4 (Feedback) ---> Vout (direct for fixed version) Pin 5 (On/Off) ---> GND (enable) : You drop the new files into the folder