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2. Inductive charging - Wikipedia

   en.wikipedia.org/wiki/Inductive_charging

   Inductive charging. The primary coil in the charger induces a current in the secondary coil in the device being charged. Inductive charging (also known as wireless charging or cordless charging) is a type of wireless power transfer. It uses electromagnetic induction to provide electricity to portable devices. Inductive charging is also used in ...

3. Resonant inductive coupling - Wikipedia

   en.wikipedia.org/wiki/Resonant_inductive_coupling

   Resonant inductive coupling or magnetic phase synchronous coupling [4] [5] is a phenomenon with inductive coupling in which the coupling becomes stronger when the "secondary" (load-bearing) side of the loosely coupled coil resonates. [5] A resonant transformer of this type is often used in analog circuitry as a bandpass filter.

4. Wireless power transfer - Wikipedia

   en.wikipedia.org/wiki/Wireless_power_transfer

   When the phone is set on the pad, a coil in the pad creates a magnetic field [1] which induces a current in another coil, in the phone, charging its battery. Wireless power transfer ( WPT ), wireless power transmission, wireless energy transmission ( WET ), or electromagnetic power transfer is the transmission of electrical energy without wires ...

5. A full guide to wireless charging, including how it ... - AOL

   www.aol.com/news/full-guide-wireless-charging...

   Wireless chargers work by creating a magnetic field that your phone, watch, or other device absorbs to gain energy. A full guide to wireless charging, including how it works and the best models to buy

6. Qi (standard) - Wikipedia

   en.wikipedia.org/wiki/Qi_(standard)

   The standard allows compatible devices, such as smartphones, to charge their batteries when placed on a Qi charging pad, which can be effective over distances up to 4 cm (1.6 in). [2] The Qi standard is developed by the Wireless Power Consortium. [1] As a universal, open standard Qi-enabled devices are able to connect to Qi chargers from any ...

7. Does Medicare cover medical alert systems? Here’s what ...

   www.aol.com/finance/does-medicare-cover-medical...

   You can see a list by state, here. “Medical alert devices do not meet the definition of covered medical devices, or durable medical equipment, under Medicare,” says Holt. Medicare Part B only ...