Searching for and installing the SG3525 PWM Controller library for Proteus involves finding the correct model files and manually placing them in your software's library folder. 1. Where to Find the SG3525 Library
How to obtain and install an SG3525 model for Proteus (practical steps) download sg3525 library for proteus
Once you have downloaded the library files, follow these steps carefully. We assume you are using (steps are similar for version 7 or 9). Searching for and installing the SG3525 PWM Controller