무선 충전기의 충전 원리 / YTN 사이언스

Summary

The video takes apart a wireless charger and explains how it transfers energy without a direct electrical connection.

Inside the charger, a circuit board drives current through a coil, creating a changing magnetic field. A coil in the receiving device responds to that field and induces an electrical current. The phone’s circuitry then conditions the received power for charging.

This process is based on electromagnetic induction. The video explains that making it work reliably in a phone requires careful engineering, including designing compact and safe components for everyday use. Although the charger’s construction is relatively simple, practical wireless charging requires more than the underlying physical principle.

Video Type

An educational teardown and explanation—not a product review or setup tutorial.

Speakers and Source

A presenter demonstrates the teardown, while a technical explainer describes the charging principle. The video is from YTN Science; individual names are not given in the subtitles.