Hello friends, I hope you all are doing great. Today, I am going to share the new Toroid Inductor Library for Proteus . Open a PC power supply, a solar charge controller, an amplifier or a motor drive and you will find a few doughnuts of copper wire: toroid inductors. A toroid is a coil wound round a ring, and that ring shape keeps its magnetic field almost entirely inside the core. It disturbs its neighbours very little, it picks up very little from them, and it packs a lot of inductance into a small, flat part. That is why the toroid is the classic choice for the power inductor of a buck converter and for the filters on a supply line. Updates Toroid Inductor Library for Proteus Latest version: V1.0 (November 2026, this tutorial) Other component libraries: C945 Transistor · PC817 Optocoup ...