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An AC adapter or AC/DC adapter (also called a wall charger, power adapter, power brick, or wall wart) [1] is a type of external power supply, often enclosed in a case similar to an AC plug. [2] AC adapters deliver electric power to devices that lack internal components to draw voltage and power from mains power themselves.
Consumer electronics usually include an AC adapter (a type of power supply) to convert mains-voltage AC current to low-voltage DC suitable for consumption by microchips. Consumer voltage converters (also known as "travel converters") are used when traveling between countries that use ~120 V versus ~240 V AC mains power.
A "power cube"-type AC adapter. An AC-to-DC power supply adapts electricity from household mains voltage (either 120 or 230 volts AC) to low-voltage DC suitable for powering consumer electronics. Small, detached power supplies for consumer electronics are called AC adapters, or variously power bricks, wall warts, or chargers.
Meaning that the power in the converter is converted to DC from AC with the use of a rectifier, and then it is converted back to AC from DC with the use of an inverter. The end result is an output with a lower voltage and variable (higher or lower) frequency. [22] Due to their wide area of application, the AC/DC/AC converters are the most ...
The output will usually be DC in the range 1.5–24 V. Power supplies that output either 100–120 V AC or 210–240 V AC are available; they are called inverters, due to the conversion from DC to AC rather than the voltage change. The output frequency and waveform of an inverter may not accurately replicate that supplied by mains electricity ...
An AC converter with a DC link. indirect AC/DC converter An electronic AC/DC converter with a DC or AC link. indirect commutation A series of commutations from one principal arm to another or back to the original one by successive commutations via one or more auxiliary arms. indirect (power) conversion Electronic conversion with one or more DC ...
Multivac is a fictional supercomputer appearing in over a dozen science fiction stories by American writer Isaac Asimov.Asimov's depiction of Multivac, a mainframe computer accessible by terminal, originally by specialists using machine code and later by any user, and used for directing the global economy and humanity's development, has been seen as the defining conceptualization of the genre ...
From the science fiction series Perry Rhodan (1961) Merlin from the H. Beam Piper novel The Cosmic Computer (originally Junkyard Planet ) (1963) Simulacron-3 , the third generation of a virtual reality system originally depicted in the science fiction novel Simulacron-3 (a.k.a. "Counterfeit World") by Daniel F. Galouye (1964) and later in film ...
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