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The MacBook Pro line launched in 2006 as an Intel-based replacement for the PowerBook line. The first MacBook Pro used an aluminum chassis similar to the PowerBook G4, but replaced the PowerPC G4 chips with Intel Core processors, added a webcam, and introduced the MagSafe power connector. The unibody model debuted in October 2008, so-called ...
The MacBook and the 13-inch MacBook Pro use a 60 W MagSafe charger, whereas the 15- and 17-inch MacBook Pro use an 85 W version. The MacBook Air used a lower-powered 45 W version. According to Apple, an adapter with a higher wattage than that originally provided may be used without problems. [12]
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 vehicles, power tools, electric toothbrushes, and medical devices.
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. Generic block diagram of a wireless power system. Wireless power transfer (WPT; also wireless energy transmission or WET) is the transmission of electrical energy without wires as a
The 14-inch and 16-inch MacBook Pro models feature a thicker and more-squared design than their immediate Intel-based predecessors. The keyboard features full-sized function keys, with the keyboard set in a "double anodized" black well. [26] The MacBook Pro branding has been removed from the bottom of the display bezel and is engraved on the ...
Qi (/ tʃ iː / CHEE) is an open standard for inductive charging developed by the Wireless Power Consortium.It allows compatible devices, such as smartphones, to receive power when placed on a Qi charger, which can be effective over distances up to 4 cm (1.6 in). [1]
A shunt charge controller or shunt regulator diverts excess electricity to an auxiliary or "shunt" load, such as an electric water heater, when batteries are full. [7] Simple charge controllers stop charging a battery when they exceed a set high voltage level, and re-enable charging when battery voltage drops back below that level.
The MagSafe name was first used by Apple for the conductive power connectors of its MacBook lineup, beginning with the 2006 MacBook Pro. It began to be phased out upon the release of the Touch Bar MacBook Pro in 2016, which used USB Power Delivery and the USB-C connector for charging. [3]