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AC /DC Adapters for laptop, notebook, computer, tablet, LCD / LED monitor, TV, bluetooth wireless speaker, printer, workstation, camcorder, digtal camera, DVD player, router etc. There are many inferior adapters on the market. Choose original ac adapter can provide your equipment with pure and smooth current and the best power matching.

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What is a smart AC adapter for a laptop?

Smart AC Adapters are adapters that provide different wattage outputs. Any notebook that supports a Smart AC Adapter can use an adapter of any output level. Even some notebooks that require a higher output wattage can use a lower output Smart AC adapter, but it usually results in limited functionality. Sometimes if you use a lower output adapter, the notebook might not run at full functionality, and the notebook battery might not charge on a lower output AC adapter.

What is a power supply?

A power supply, typically, converts AC current (from a wall socket) to a (normally lower) DC voltage (or voltages). In the case of a computer, the power supply is modular — i.e., it is a separate unit, designed to provide regulated voltages necessary fro the operation of the CPU, memory, storage devices, and GPU (Graphics Processing Unit).

Most AC-powered electronics contain some sort of power supply, (although it may be on the same printed circuit board as the rest of the device’s circuits).

If we look at the power supply’s functions, we can break it down into three or four parts:

· Conversion: usually accomplished by a transformer or (in the case of a switchingpower supply) a “down-converter”, this is the act of changing the 120 or 230 volt “wall voltage” input to a (typically) lower voltage appropriate to the circuit being powered.

· Rectification: this is the act of converting the alternating current (AC) coming from the transformer (or down-converter) to direct current (DC). There are also somepower supplies that are “AC output”.

· Filtering: smoothing out “ripple” — left over alternating current (or pulsed direct current) components — from the DC output, (usually accomplished by capacitors, choke coils, or a combination thereof).

· Regulation: holding the voltage output to a specific voltage (or voltages), so that variations in wall voltage do not affect the output voltage. Not all power supplies are regulated, but a vast majority are.

Again, computers are somewhat unique in that their power supplies are separate units, (typed by “form factor” with “ATX” being the most common), that are standardized in terms of connector pinout and voltages, and as such, are interchangeable (within the same form factor), so long as they meet the minimumwattage requirements of the system they’re being used in.