Generally yes. Older .LIB files from Proteus 7 may need conversion via Library Manager > Update .

Here is a breakdown of how to find the library, install it, and why it matters for your power electronics projects. Finding the SG3524 Library

, the IC will appear in your workspace but won't "run" when you hit play. Always ensure the library description mentions "Simulation Ready" or "Active Model" to ensure you can actually see the PWM waves in action. circuit diagram to calculate the frequency for your SG3524 setup?