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2. MagSafe (wireless charger) - Wikipedia

   en.wikipedia.org/wiki/MagSafe_(wireless_charger)

   The pack itself can be charged either directly through its Lightning port or wirelessly from an iPhone that is being charged via Lightning. [ 28 ] [ 29 ] [ 30 ] The MagSafe Battery Pack was discontinued in September 2023 after the iPhone 15 series was released, which charges via USB‑C (for wired charging, in addition to Qi2 and MagSafe ...

3. Lightning (connector) - Wikipedia

   en.wikipedia.org/wiki/Lightning_(connector)

   Apple Lightning to USB-A cable. Lightning is an 8-pin digital connector. Unlike the 30-pin dock connector it replaced (and USB Type-A and -B connectors), it is reversible. [24] Most Lightning devices only support USB 2.0, which has a maximum transfer speed of 480 Mbit/s or 60 MB/s. With USB 2.0, only one lane is in use at a time.

4. iPhone 15 Pro - Wikipedia

   en.wikipedia.org/wiki/IPhone_15_Pro

   The iPhone 15 Pro and iPhone 15 Pro Max use USB-C with USB 3.2 Gen 2 transfer speeds (est. up to 10Gbit/s / 1.25 GB/s), [18] [19] an improvement over the iPhone 14 Pro and the iPhone 15/15 Plus base models which only have USB 2.0 transfer speeds (est. up to 480 Mbit/s / 60 MB/s). [20]

5. Inductive charging - Wikipedia

   en.wikipedia.org/wiki/Inductive_charging

   Slower charging – Due to the lower efficiency, devices take 15 percent longer to charge when supplied power is the same amount. [ 11 ] More expensive – Inductive charging also requires drive electronics and coils in both device and charger, increasing the complexity and cost of manufacturing.

6. Electromagnetic pulse - Wikipedia

   en.wikipedia.org/wiki/Electromagnetic_pulse

   An electromagnetic pulse (EMP), also referred to as a transient electromagnetic disturbance (TED), is a brief burst of electromagnetic energy. The origin of an EMP can be natural or artificial, and can occur as an electromagnetic field, as an electric field, as a magnetic field, or as a conducted electric current.

7. Magnet wire - Wikipedia

   en.wikipedia.org/wiki/Magnet_wire

   Inductor made with magnet wire wound around a toroidal core. Magnet wire [1] or enameled wire is a copper or aluminium wire coated with a very thin layer of insulation.It is used in the construction of transformers, inductors, motors, generators, speakers, headphones, hard disk head actuators, electromagnets, electric guitar pickups, and other applications that require tight coils of insulated ...

8. Magnetic circuit - Wikipedia

   en.wikipedia.org/wiki/Magnetic_circuit

   Magnetic field (green) induced by a current-carrying wire winding (red) in a magnetic circuit consisting of an iron core C forming a closed loop with two air gaps G in it. In an analogy to an electric circuit, the winding acts analogously to an electric battery, providing the magnetizing field , the core pieces act like wires, and the gaps G act like resistors.

9. Electromotive force - Wikipedia

   en.wikipedia.org/wiki/Electromotive_force

   a magnetic pickup generates an emf from a varying magnetic field produced by an instrument. a piezoelectric sensor generates an emf from strain on a piezoelectric crystal. Devices that use temperature to produce emfs include thermocouples and thermopiles. [58] Any electrical transducer which converts a physical energy into electrical energy.