What Is a Toroidal Inductor?
A toroidal inductor consists of a coil that is wound around a donut-shaped core, utilizing magnetic materials such as ferrite or iron for the core’s construction.
This inductor’s design is characterized by its unique toroidal (ring-like) shape, where the coil’s winding encircles the core. This configuration effectively confines the magnetic flux within the core, significantly reducing flux leakage and enhancing magnetic coupling. As a result, toroidal inductors exhibit high inductance, which refers to the coil’s capability to oppose changes in current flow.
Unlike traditional linear coils that may suffer from flux leakage at high frequencies, resulting in diminished efficiency, toroidal inductors maintain their efficiency by minimizing such leakage. They are commonly employed in diverse applications, including power supplies, filtering circuits, and amplitude modulation circuits, among others.