What are the three voltages that the power supply usually provides to the various components inside the computer?

This article shares with you about the three voltages that power supplies usually provide to various components of a computer. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

The power supply usually provides three kinds of voltages to various components in the computer: 1, 5V, mainly for the motherboard; 2, 3.3V, mainly for CPU; and 3, plus or minus 12V, mainly for audio circuit and hard disk power supply. The computer belongs to weak current products, and the working voltage of the components is relatively low, which is generally DC within plus or minus 12 volts.

The important voltages provided by the power supply to the computer circuit are:

1, 5V, mainly for motherboard

2.3.3V, mainly for CPU.

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

Computers belong to weak current products, 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 ordinary city electricity is 220 volts (110 volts in some countries) alternating current, which can not be used directly on computer components.

Therefore, the computer, like many household appliances, needs a power supply part, which is responsible for converting ordinary city electricity into the voltage that the computer can use, which is generally installed in the computer. The working voltage of the core component of the computer is very low, and because the working frequency of the computer is very high, the requirement of the power supply is relatively high. (if you need basic knowledge related to computer programming, you can refer to the programming Learning Channel)

At present, the power supply of the computer is the switching circuit, which converts the ordinary AC into DC, and then controls the voltage by chopping, and outputs different voltages to the motherboard, hard disk, optical drive and other computer components.

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