There are some of the most basic types of magnetic circuit for transformers - rod, armored and toroidal. If we compare their functional characteristics and range of applications, then the toroidal transformer will have a clear advantage.
Such a device has the widest range of applications in many branches of modern industry. Among the main areas in which such a device as a toroidal transformer is involved, one should name voltage stabilizers, lighting equipment, radio engineering, UPS (uninterruptible power supply), diagnostic equipment, medical equipment.
It should be said about the functional characteristics of devices of this type. A toroidal transformer is a single-phase power step-up or step-down transformer having a toroidal core with more than two windings. According to the principle of operation, it does not differ from models with rod or armor winding. Any transformer is, first of all, a device designed to convert electricity from a single valuevoltage values to another. However, the design features of such an electrical device as a toroidal transformer, if we talk specifically about its core, can significantly reduce the weight and dimensions of the electrical machine. And, as a result, technical and economic characteristics and indicators will increase.
It is the small volume and weight that are one of the main characteristic features of such devices as toroidal transformers. Thanks to flexible free leads, savings can reach a truly impressive sixty percent (compared to devices on laminated cores). What's more, the toroidal transformer is much easier to connect when wiring electronic devices indoors.
One of the most important characteristics of such electrical machines is the shape of the core. It is the ring shape that many consider almost ideal. In this case, the winding of the toroidal transformer will be much more economical, since due to the uniform symmetrical distribution over the surface of the core, it will have a much shorter length. This will reduce the resistance of the winding, but increase the efficiency (coefficient of performance).
The use of higher current densities is also an obvious advantage. This is possible because the winding is subjected to cooling throughout the core. Minimal iron losses provide low magnetizing current. It also enhances andthermal load characteristics of an electrical device such as a toroidal transformer.
Such machines provide good energy saving performance. Under load, its performance reaches thirty percent, and eighty - at idle. It is these low dissipation rates that are another advantage of this type of device. This factor is extremely important when working with electrical circuits of increased sensitivity.
