Working principle and advantages of Toroidal transformer

Working principle and advantages of Toroidal transformer

Working principle:

First of all, you know the principle of transformer. The principle of Toroidal transformer also follows this principle. The essence is the same;

Secondly, the core of the Toroidal transformer is made of high-quality cold-rolled silicon steel (sheet thickness is generally less than 0.35mm), which is seamless rolled,

This makes its core performance better than the traditional laminated core. The coil of the Toroidal transformer is uniformly wound on the core, and the direction of the magnetic line generated by the coil almost coincides with the magnetic circuit of the core. Compared with the laminated plate, the excitation energy and core loss will be reduced by 25%, which brings a series of advantages as follows:

1) The core has high electrical efficiency, no air gap in the core, and the lamination coefficient can be as high as 95%, and the core permeability can be 1.5 ~ 1.8T (laminated core can only

When 1.2 ~ 1.4T is used, the electrical efficiency is as high as 95%, and the no-load current is only 10% of that of the laminated chip;

2) As long as the cross-sectional area of the core is equal, the Toroidal transformer is easy to change the proportion of length, width and height of the core, and the overall dimension can be designed to meet the requirements;

3) The magnetic interference is small, the core of the Toroidal transformer has no air gap, and the winding is evenly wound around the Toroidal core. This structure leads to small magnetic leakage and small electromagnetic radiation. It can be used in high sensitivity electronic equipment, such as low-level amplifier and medical equipment, without additional shielding;

4) The vibration noise is small and the core has no air gap, which can reduce the core.

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