How does a phone wireless charger work?

A phone wireless charger works by using a process called electromagnetic induction. Here are the basic steps:

  1. The wireless charger contains a copper coil that generates an electromagnetic field when an electrical current flows through it.
  2. When a phone with wireless charging capabilities is placed on the charging pad, a second copper coil in the phone creates a small electrical current in response to the electromagnetic field from the charging pad.
  3. The electrical current generated by the phone is then converted by a circuit in the charging pad into DC power that can be used to charge the phone’s battery.
  4. The DC power is sent through a cable to the phone’s battery, where it charges the battery until it is full.

The process of wireless charging is based on the principle of magnetic coupling, where energy is transferred between two coils through a magnetic field. It is a safe and convenient way to charge a phone without the need for cables or connectors.

It’s worth noting that different wireless charging standards exist, such as Qi, PMA, and A4WP, and some chargers may not be compatible with all phone models. Additionally, the charging speed may vary depending on the phone model and the charging pad used.

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