“According to a patent application published on Thursday, Apple is actively investigating the integration of inductive charging technology into its devices using multi-mode versions of electrical coils already found in speakers, microphones and haptic engines,” Mikey Campbell reports for AppleInsider.
“In the application, published by the U.S. Patent and Trademark Office as ‘Inductive power transfer using acoustic or haptic devices,’ Apple describes a common two-coil inductive charging system in which a dedicated transmitter coil interacts with a receiver coil in a consumer electronic device, like an iPhone,” Campbell reports. “Unlike current solutions the invention does not require additional hardware, instead using existing coils from audio or vibratory feedback components.”
Campbell reports, “Inductive charging systems are sensitive to coil diameter, distance, resistance and even shape. A good example of the current state of technology is the standalone coil in Apple Watch and its mate in Apple’s Magnetic Charging Cable. Even with dedicated hardware the system is slow to charge, taking roughly the same amount of time to fully juice Watch’s 205 mAh battery as a 5W power adapter does an iPhone 6s’ 1,715 mAh cell.”
Read more, and see Apple’s patent application illustrations, in the full article here.
MacDailyNews Take: For devices where speed is not of the essence and charging ports are unwanted, as with Apple Watch, inductive charging can make sense.
[Thanks to MacDailyNews Reader “Arline M.” for the heads up.]