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: C:\Program Files (x86)\Labcenter Electronics\Proteus 8 Professional\Data\LIBRARY .
If you need quick simulation for a simple SMPS design, a third-party SG3525 library from a trusted site works fine. For production-level verification , consider using LTspice or SIMetrix where an accurate SG3525 model exists. download sg3525 library for proteus better
Alternatively, if you need a specific mirror: Check the "Resources" section of major electronics tutorial sites like "Microcontrollers Lab" – ensure the post date is after 2020. download sg3525 library for proteus better
Create a new component in Proteus ISIS with these : download sg3525 library for proteus better