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Use effect and temperature rise of the core of transformer
Jan 29, 2019

In the process of making the core of transformer, 0.35mm thick cold-rolled silicon steel sheet is generally used. In theory, if the eddy current is reduced, the thinner the thickness of the silicon steel sheet, the narrower the spliced strip, and the better the effect.

This not only reduces the eddy current loss, reduces the temperature rise, but also saves the silicon steel sheet.

The core of transformer is made according to the principle of electromagnetic induction. There are two windings on the closed core post, one primary winding, and one secondary winding. When the original winding is connected with the AC power supply voltage, the original Rao flow There is an alternating current, and a magnetic potential is established. Under the action of the magnetic potential, an alternating main magnetic flux is generated in the iron core, and the main magnetic flux passes through at the same time in the iron core, and the second winding is closed due to the electromagnetic induction produces an induced electromotive force in the primary and secondary windings respectively.

As for why it can boost and step down? Then you need to use Lenz's law to explain that the magnetic flux generated by the induced current always hinders the change of the original magnetic flux.

When the original magnetic flux increases, the induced magnetic current is opposite to the original magnetic flux, that is, the induced magnetic flux generated by the secondary winding is opposite to the main magnetic flux generated by the primary winding.

Therefore, the secondary winding has a low-level alternating voltage, so the core is the magnetic circuit of the transformer, and the winding is the circuit part of the transformer.

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