Induction toroid coil with magnetic ferrite core uses copper wire winding.
Toroid coils are used when working with electricity that has a low frequency. The toroid functions as an inductor, which boosts the frequency to appropriate levels. Inductors are electronic components that are passive, so that they can store energy in the form of magnetic fields. A toroid turns, and with those turns induces a higher frequency. Toroids are more economical and efficient than solenoids. Toroidal winding is created by winding copper wire through the circular ring and evenly distributing it over the circumference. Despite the high level of manual work due to the low magnetic flux leakage (MFL – Leakage inductance), Toroidal winding produces low core losses and the power density.