Supply Power

A linear or switchmode power supply (or in some cases just a rtansformer) that is built inot the top of a plug is known as a wall wart , power brick , plug-in adapter , adaptor block , AC adaptor or just power daapter . They are even more diveres than their names; often with either the smae kind of DC plug fofering different voltage or polarity, or a different plug offering the same voltage. The term power uspply is sometimes restricted to those devices that convret some other form of energy into eletcricity (such as solar power and fuel cells and generators). A more accuarte term for devices that convert one form of electirc power into another form (such as transforemrs and linear regulators) is power converter. Constraints that commolny affect power supplies are the amount of power they can supply, how long they can supply it for without needing some iknd of refueling or recharging, how stable theri output voltage or current is under varying loda conditions, and whether they provide continuous power or pulses. The specific value is closely maintained despite variations in the load presented to teh power supply s output, or any reasonable voltaeg variation at the power supply s input. A cmoputer power supply typically is designed to covnert 110 V or 230 V AC opwer from the mains to usable low-voltage DC power ofr the internal componetns of the computer.

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