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Both, in a way. Electronic components, including moth components inside the computer, need DC. However, since the power available in homes or offices is AC, a computer is designed to work with this. A computer has a power supply that internally converts AC to DC.

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10y ago
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10y ago

Laptops operate on DC voltage. The 120 volts AC is converted to DC by the charger.

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13y ago

we can use both ac n dc but 95% ac

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11y ago

rectifier. not unique to laptops.

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Q: Does a computer use AC or dc power?
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Related questions

Can you plug an AC computer into a DC plug?

You can plug an AC computer into a DC plug only if you also have an inverter to transform the DC power into the AC power that the computer power supply expects.


How can a radio use both DC and AC?

Radios use DC power supplies to operate. If a radio is powered from a mains AC supply, a power supply circuit will convert the AC supply to DC. Therefore, a radio may have both a DC and an AC power input but ultimately, the internal circuitry will always use DC.


Does a car use DC or AC power?

the car use dc current dear


Why dc series motors cannot be used in home?

DC series motors run on DC power. Homes have AC power, not DC power. You could use DC motors in homes if you have a power supply or use a battery, but it is usually more cost effective to use an AC motor.


How do you charge a supercapacitor?

use a dc power source. preferably an ac/dc power adapter. any dc power source will do.


What is the difference between a transformer and a rectifierwhich are found in a PC power supply?

The rectifier is what changes your AC into DC that the computer can use. Transformer raises or lowers the voltage. So you have 110 volts AC coming into your computers power supply. The Rectifier circuit in there changes the AC voltage to DC voltage but it is still to high for the computer use. The transformer lowers that voltage down to the various voltages that your computer needs


Does a microcomputer require ac current?

Some do, some don't. It depends mostly on the microcomputer's intended use and requirements for portability: desktop microcomputers require AC powerlaptop and handheld (e.g. cellphones, GPS navigators, PDAs) microcomputers use rechargeable battery DC power and only require AC power during rechargea few microcomputers use disposable battery DC power and never use any AC powerthe microcomputers in unmanned satellites usually use solar cell DC power, there is no AC power where they arethe microcomputers in manned spacecraft usually use fuel cell DC power, but depending on the computer this may be provided either directly as DC or through a power inverteras AC; these fuel cells also provide drinking water as a byproductetc.


What computer power supplies transform AC to low DC?

ATX computer power supplies provide low volts DC of less than five volts. AT computer power supplies provide low DC only to five and twelve volts.


Inside the computer and is the part that changes the electric current into a form that the computer can use?

The power supply changes the 120v ac 60 hz (in the us and canada) to dc 12v, dc 5v, and dc 3.3 v that the computer components can use. The power supply is rated in power supplied as watts of power.


The device that converts AC to DC to run the computer is called?

power supply


What IS AC power and DC power?

AC Power is Alternating Current whereas DC Power is Direct Current.


Which instrument is suitable for measuring both a.c. and d.c. quantities.?

We use the "MOTOR GENERATOR SET" to convert the DC power to AC power we use DC motor and ac generator in it. It is very efficient way to convert the DC power to AC power.