Toroidal transformers have the advantages of small size, low noise, less heat generation and high conversion efficiency. It is increasingly used in industrial automation equipment, instrumentation, petrochemical industry, health care, agricultural production, mechanical processing, scientific research, military industry, household appliances and other fields. Next, let's take a look at the performance of toroidal transformers.
When the eddy current loss (iron loss) of a coil wound with a toroidal core is minimized, the core of the transformer is machined into a toroidal core. The core of the toroidal transformer is made of cold-rolled silicon steel sheets with a thickness of less than 0.35 mm, which are seamlessly wound and formed. Compared to U- and E-type transformers, core losses are reduced by more than 50%, resulting in improved conversion efficiency for transformer or isolation.
The toroidal transformer core can be processed to the extent that there is no air gap, and the electrical conversion efficiency of the toroidal transformer can reach more than 95% because the stacking coefficient can reach more than 95%. The airless structure of the toroidal transformer core results in a very low no-load current and no heat generation during long-term power supply.
The space occupied by the length, width, and height of a toroidal transformer is cylindrical, and the volume of a toroidal transformer is reduced by about half compared to a U-shaped E-shaped transformer. The toroidal transformer core has no air gap, the magnetic circulation structure is almost in a closed space, the magnetic leakage is small, the electromagnetic radiation is weak, the ability to resist external magnetic interference is strong, there is no need to increase the shielding layer, and it is installed on electronic equipment with various complex structures, and there is no electromagnetic interference. Because the core has no air gap, high permeability, and no vibration and noise in the physical structure. Even in high-current and high-load operating environments, the human hearing does not feel the noise.
When the toroidal transformer is loaded and running, its temperature is very low. Generally, its iron loss can be less than 1W/kg, especially suitable for instruments with narrow heat dissipation space. The power of a toroidal transformer is usually determined based on its diameter and height. The higher the power, the greater the volume and weight. The configuration of various power specifications and various input and output voltages is very flexible, and the processing equipment is simple and fast. The toroidal transformer has a temperature rise of only 40°C at full load, allowing for short-term overload operation.