Why Toroidal Cores are so Important to any Transformers?
Transformers are used to turn the voltage output up or down. For them, modern electrical engineering is impossible to imagine. A toroidal transformer is one of the most highly efficient. This reflects a core formed by a loop, interwoven with wire, and steel strips are rolled up inside.
Electricity flows through the winding core and produces magnetic fields. The magnetic field passes through the first winding in the coil to get the output voltage.
How does it work?
Like transformers of another type, the toroidal transformer has an ideal configuration. In reality, Faraday’s first transformer had been a transformer on the toroidal core.
Toroidal cores are made of electrical steel or other electrically advanced materials with very low loss rates and high induction of saturation by a magnetic coil transformer. This is done by heating the toroidal frame to a high temperature and then cooling it down.
It allows saturation to reach high degrees up to 16,000 Gauss. The magnetic flux is evenly distributed in a toroidal core in the middle, so due to the lack of intermediate metal parts and technical gaps.
Main Advantages and Disadvantages
When using toroidal transformers supplied with voltage, up to 64 percent of the space occupied can be saved compared to conventional transformers with lined cores (it is also easier to connect equipment using any transformer leads such as power transformer rather than the terminal blocks).
The toroidal (ring) core has an ideal shape which allows a transformer to be produced using a minimum amount of material. All windings are distributed symmetrically around the entire core circumference which significantly reduces the winding length.
This results in a decrease in winding resistance and an improvement in output. Lower magnetic induction is likely, as the magnetic current travels in the same direction as the core of silicon steel during rolling. The pros can also be noted: low dispersion rates; lower heat; low weight and size; lightweight, easy to install in electrical equipment.
You can also note the pros:
- Low dispersion rates.
- Less core heat.
- Low weight and size.
- Compact, easy to install in Electrical Equipment.
Why is this the most popular type of transformer?
Any expert would claim that the toroidal shape of the core is suitable for a transformer for several reasons: firstly, saving resources on output, secondly, windings cover the entire toroid magnetic core equally, extending over the entire surface, leaving no empty spaces, and thirdly, because the windings are shorter, the performance of the toroidal transformers is higher due to the lower resistance of the winding.
A further advantage in terms of energy conservation. About 30 percent more energy is stored at full load and about 80 percent at idle relative to other laden magnetic cores. The scattering index is 5 times less than that of protected transformers and rod transformers, so they can be used safely for sensitive electronics.
Application Areas for Toroidal Core Transformers
Toroidal transformers have numerous fields of application, and among them we can emphasize the most common of the following:
- Consumer electronics.
- Medical electronics.
- Power supply systems.
- Audio systems.
- Security systems.
Toroidal transformers are used in various industries today, and most often they are used in uninterruptible power supplies, voltage stabilizers, used for power lighting and radio devices, often toroidal transformers can be seen in medical and medical equipment, in welding equipment.