Iron core: The iron core of the toroidal transformer is produced by continuously rolling the oriented silicon steel strip with a fixed or variable width on the appropriate core, and annealing at high temperature to relieve the stress.

　　Since the orientation direction of the steel strip is consistent with the direction of the magnetic flux, the performance of the core material can be fully exerted by winding the iron core.

　　Winding: Copper wire, aluminum wire, and copper-clad aluminum wire can be wound by a winding machine. When winding, it is divided into primary and secondary, the primary is the input voltage, and the secondary is the output voltage/current.

　　Insulation: It is used for primary and secondary insulation, inter-turn insulation, iron core insulation, and insulation between shells. The materials used include various insulation forms such as cardboard, epoxy resin, and insulating tape, which can well protect the toroidal transformer from short circuits, open circuits, and other undesirable phenomena.

　　Working principle of toroidal transformer：

　　When an alternating current passes through the coil, an induced electromotive force is generated. When the voltage at both ends of the coil is equal, the generated electromotive force is the largest; otherwise, it is the smallest. In order to make the coil generate the maximum induced electromotive force, it is necessary to try to reduce the variation range of the magnetic flux, which requires changing the strength of the magnetic field distribution or adjusting the magnitude of the excitation current to control the inductive reactance and capacitive reactance of the coil.

　　Advantages of toroidal transformers:

　　Low standby energy consumption and lower no-load loss save more energy for standby;

　　High working efficiency, high energy conversion efficiency, and efficient green power supply.

　　There is no high-frequency electromagnetic radiation, and the power-frequency electric field and the power-frequency magnetic field generated by it have a completely negligible impact on the environment and the human body. It is a healthy power supply.

　　With good low-temperature characteristics, it can still start normally in an environment of minus 40 degrees, and work for a long time.

　　Small internal resistance, strong anti-interference ability, small size, and high cost-performance ratio when making high-power power supplies.

　　The electrical performance is excellent, and its electric strength and resistance to heat and humidity are much higher than the industry standard.