How Does Wireless Charging Work in Smartwatches?

Wireless charging your toothbrush, smartphone or any other device works similar as we just showed with the light bulb. In practice, we don’t have a moving magnet but we do have another loop of copper wire, a so-called induction coil. This will carry a changing current at high frequency. These coils are for instance perfectly visible in our Liberty glass wireless charger.

The changing current generates the changing magnetic field. This part of the wireless charging system is called the “transmitter”. The part inside your phone, smartwatch or toothbrush is called the “receiver” and is charged in the same way as the light bulb.

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[sharuhasansenthilkumar]

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[hassain]

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