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Wireless charging, also known as inductive charging or cordless charging, is a method of transferring electrical energy to a device without the need for a physical cable connection. This technology relies on electromagnetic principles and has become a staple for charging modern consumer electronics like smartphones, smartwatches, and earbuds.
How Wireless Charging Works
The core principle behind most common wireless charging is electromagnetic induction, which follows the laws of physics defined by Faraday and Ampère.
Transmission Coil (in the charging pad): An alternating current (AC) is passed through a copper coil (the transmitter coil) housed within the charging pad or base.
Magnetic Field Generation: This flow of AC creates an oscillating, or changing, electromagnetic field around the transmitter coil.