(Regulating Pulse Width Modulator) is not always included in the standard Proteus component library by default. To use it for your simulation projects, you must either download a third-party library or use a compatible equivalent. ariat-tech.com 1. Where to Find the SG3524 Proteus Library
If the "ProgramData" folder is hidden, enable "Show hidden files" in your OS settings to find it under
Import an external SPICE model: You can create a custom Proteus component and attach a SPICE .lib or .mod file to it. A heavily referenced Russian electronics repository by Valvolodin hosts a library pack containing the SPICE model for the 3524; you can find it directly in this Archived Edaboard Thread. sg3524 proteus library download link
SnapMagic (CAD Models): Provides the SG3524N Symbol and Footprint specifically formatted for Proteus.
If your version lacks it, try these legitimate options: (Regulating Pulse Width Modulator) is not always included
CAD Models (Symbol & Footprint): Download the SG3524N Model from SnapMagic 0;d25; (formerly SnapEDA).
How to Install the SG3524 Proteus Library Check if Pin 10 (Shutdown) is grounded
Once you have installed the SG3524 Proteus library, you can use it in your Proteus designs as follows: