The power supply usually supplies three voltages to the various components inside the computer Choos

v, mainly for the main board;

3V, mainly for CPU power;

3. Positive or negative 12V, mainly for audio circuits and hard disk power supply.

The computer is a weak current product, that is to say, the working voltage of the components is relatively low, generally within plus or minus 12 volts, and it is direct current.

The normal utility is 220 volts (110 volts in some countries) alternating current.

It cannot be used directly on computer parts.

Therefore, computers, like many home appliances, need a power supply part, which is responsible for converting ordinary mains power into a voltage that can be used by computers, and is generally installed inside the computer. The core components of the computer work at a very low voltage, and because the computer works at a very high frequency, the requirements for the power supply are relatively high.

At present, the power supply of the computer is a switching circuit, which converts ordinary alternating current into direct current, and then controls the voltage through choppering, and outputs different voltages to computer components such as motherboards, hard disks, and optical drives.

The important voltages supplied by the power supply to the computer circuits are:

1. 5V, mainly for the motherboard;

Second, it mainly supplies power to the CPU;

Third, plus or minus 12V, mainly for the audio circuit, hard disk power supply.

The power supply quality of the computer system is high, and the technical indicators of the power supply are usually required to meet the voltage.

The power supply quality of the computer system is high, and the technical indicators of the power supply are usually required to meet the voltage. Hello dear, the general computer power supply is in the voltage range of 180 to 250 volts. The volt, the SI system of units, indicates the basic unit of voltage, volt, abbreviated as volt, symbol v, is the basic unit of voltage in the SI system, named in honor of the volt of the Italian physicist Alessandro Ford.

Alessandro Volt invented the volt battery, which has made a great contribution to human development. In electricity, volts are defined as:"On a wire with a constant current of 1A, the potential difference between the two points when the power dissipation on the wire is 1W"。

I hope it can help you.

Voltage is responsible for the continuous current generated in a circuit;

The power supply is the device that provides the voltage to the stool

So the answer is: voltage is a book.

Different computers will have different power supply needs.

There are three types of power supply interface voltages for ordinary desktop computers: +12V, +5V, and +.

Hello! The computer power supply generally provides 12V, 5V, and three voltages.

No, today's computer power supplies are equipped with voltage regulation.

The power supply is a chain that provides the voltage and is wide-mounted; Voltage is responsible for the formation of electric current

So the answer is: voltage; The shed is bright and forms an electric current cherry pin