Resembling a doughnut in shape, the toroid features a torus surface. This is a type of annular shape that is generated through a circle moving around an axis that is outside of it.
An example of a toroidal item would be an insulated wire coil that is in the doughnut shape, which will typically have an iron, or some other metal, core. These objects are often used as inductors in a circuit, such as in low frequency receivers and transmitters. This is because they have a higher inductance. They also have a higher current than a solenoid. These are also commonly found in transformers as the main source of power. The toroidal coils help to minimize resistance, because of the fewer windings and larger diameter present.
Advantages of Toroidal Transformers
There are quite a few advantages offered by a toroidal transformer compared to traditional laminated power options. They offer efficient and quite operation with very little excessive magnetic fields. Their small weight and size help to support an object that is simple to design for virtually any application.
The Core of the Toroidal Transformer
The doughnut shaped core lies at the heart of the toroidal transformer. The core is constructed through a complex process that is similar to winding a spring. When the process is complete, all the molecules present are aligned in the same direction as the flux.
Efficiency of the Core
Since the cores will be constructed or a wound ribbon, with no breaks or separation, it means it is virtually air gap free. The windings present have been wrapped completely evenly throughout the core, which helps the transformer operate with a much higher flux density than what is possible with standard transformers.
Stray Magnetic Fields
Due to the unique design and creation process for toroidal transformer, the presence of stray magnetic fields is virtually nonexistent. Compared to traditional transformers, with larger gaps, this is significant, since there is quite a bit of leakage.
In most cases, when top efficiency is required, the toroidal transformer is the best option. It offers all of the advantages highlighted here due to the unique creation process. While these components are offered in pre-determined sizes, if necessary, they can also be custom made to meet the application’s specifications. This makes them versatile and functional for virtually any need. Due to the unique manufacturing process and use, these transformers are often more expensive than traditional options, but the additional cost comes with a number of advantages.
