Toroidal Inductors

Some articles on toroidal inductors, toroidal:

Toroidal Inductors And Transformers
... Toroidal inductors and transformers are electronic components, typically consisting of a circular ring-shaped magnetic core of iron powder, ferrite, or other material around which wire is coiled to make an ... Toroidal coils are used in a broad range of applications, such as high-frequency coils and transformers ... Toroidal inductors can have higher Q factors and higher inductance than similarly constructed solenoid coils ...