Toroid

What is a Toroid?

Toroid is the core shape of the common mode chokes. A continuous circular path aids in maximizing the magnetic coupling between the windings. This minimizes leakage inductance. A toroid is inexpensive compared to the other type (E cores).

The toroids have a simple coil wound around a cylindrical structure, which is then bent into a doughnut shape. This merges the poles and creates an external magnetic field with regular polarities. A toroid coil also has the magnetic flux largely kept inside the coil to lessen magnetic radiation from the coil and sensitivity to the external fields.

Applications:

1. Computer monitor cables.


2. Power Supplies.


3. Radio


4. Ham Radio


5. Scanners


6. Transmitters


7. Transformers

Most of the Electro-Magnetic applications.