The 12V output of the computer power supply is in the range of how many A

12V (Standard Range:

The voltage of 12V is to provide the logic judgment level for the serial port.

The required current is not large, generally below 1A, and even if the voltage deviation is too large, it will not cause a failure, because the 0 level of the logic level is from -3V to -15V, which has a wide range.

First of all, the 12V output of the ATX switching power supply of different computers is different, and the method is as follows: 1. Open the chassis and check the nameplate on the switching power supply. 2. Take a switching power supply as an example:

As can be seen from the nameplate, the 12V output of the CPU can be up to 14A, and the other 12V output can be up to 11A. 3. The current is not immutable, the current output of the switching power supply is not the same when the computer is in standby and running a large program, and the output current is relatively small when running a large program, and when running a large program, the output current is relatively large. The specific output current also depends on the specific configuration of the computer.

4. If you want to check the output current in real time, you can connect the clamp universal meter on the output line and hit the current level of 20A for real-time measurement.

The output current of the power supply of different manufacturers is different, and the specific should be shown on the power supply label.

Summary. Hello, first of all, this one depends on the performance of your power supply, if your power supply is rated at 400W, then 12V is the highest for 30A.

Secondly, how much A can be output by 12V depends on the power of the power supply, the higher the power, the larger the range.

What is the range of 12V output of a computer power supply?

Hello, first of all, this one depends on the performance of your power supply, if your power supply is rated at 400W, then 12V is the highest for 30A. Secondly, how much A can be output by 12V depends on the power of the power supply, the higher the power, the larger the range.

Hello, first of all, this one depends on the performance of your power supply, if your power supply is rated at 400W, then 12V is the highest for 30A. Secondly, how much A can be output by 12V depends on the power of the power supply, the higher the power, the larger the range.

12V (Standard Range:

After powering on, the 12V output voltage is basically between to. The general error is required to be within 3%, and the error of a well-done power supply is within the range of 1%. Normally, the empty load will be a little higher.

The voltage of 12V is to provide a logic judgment level for the serial port, and the current required is not large, generally below 1A, even if the voltage deviation is too large, it will not cause a failure, because the 0 level of the logic level is from -3V to -15V, which has a wide range.

12v1 means that the power specification uses the ATX 12V version, and +12v2 means that the power specification uses the ATX 12V version.

The computer power supply is a kind of enclosed independent component installed in the main chassis, its function is to convert the alternating current into +5V, -5V, +12V, -12V, + and other different voltages, stable and reliable direct current, and supply the system board, various adapters and expansion cards, hard disk drives, optical disk drives and other system components in the main chassis, as well as keyboards and mice.

For different positioning power supplies, the number of output wires is different, but they are inseparable from these 9 colors: yellow, red, orange, purple, blue, white, gray, green, and black. These 9 colors of wires are available in all sound PC power supplies (white wires are omitted from mainstream power supplies).

Yellow, +12V (standard range: +, yellow lines should be one of the most numerous in the power supply, with the addition of CPU and PCI-E graphics card power supply components, the role of +12V plays a pivotal role in the power supply.

12V has long been commonly used to power spindle motors and seek motors for hard disks, optical drives, and floppy drives, as well as to provide operating voltages and logic signal levels for circuit logic devices such as ISA slots.

When the voltage output of 12V is abnormal, the reading performance of hard disks, optical drives, and floppy drives is often unstable. When the voltage is low, it is manifested as a serious pick-up of the optical drive, the logical bad sectors of the hard disk increase, and the bad sectors often appear, and the system is easy to crash and cannot be used normally.

When it is high, the speed of the optical drive is too high, which is easy to lose control, and it is easier to explode the disk phenomenon, and the hard disk is stalled and flying. If the +12V power supply is short, it will directly affect the performance of the PCI-E graphics card, and affect the CPU, which will directly cause a crash.

The computer power supply says DC output +12V15A, which means that the maximum output capacity of +12V is 15A current, that is, 180W, but this power is not very related to the nominal 220W power supply.

Many friends think that the maximum power output of each end of the power supply nameplate is the maximum output power of this power supply, this algorithm is wrong, the ATX standard has formulated a variety of power in detail to carry the maximum output current of each voltage output when the output is carried out, and the power supply manufacturer is required to make a specific description of the maximum current of the output end of the power supply such as + and +12VDC on the nameplate, due to a group of windings of the common transformer of Hengshou + and +5VDC, it is impossible to output its nominal maximum current at the same time, So the ATX standard also stipulates that manufacturers should say the maximum power they have combined output, which is 220W marked on your power supply.

After opening the shell of the power supply, we can understand the process level of the power supply, but we can not estimate the actual power output of the power supply, and most dealers will not give users such an opportunity, so the output power of the power supply, the maximum output current at each end and other indicators are usually marked on the nameplate of the power supply, as long as you understand the meaning of the power supply nameplate, you can judge the quality of a power supply according to the provisions of ATX.

The nameplate of the power supply will first indicate the maximum current that can be output from each output"Power voltage x current"The formula can be converted to calculate the output power of each item, these voltages include + and -5VDC, -12VDC, the user can first choose according to this current and power, such as the user's hard disk, when the optical drive is more, you should choose the power supply with a larger current at the output terminal of +12VDC.

It should be noted here that the power supply nameplate is often marked with the maximum current of the output terminal when each terminal works separately, and such an indicator cannot be achieved when each terminal works at the same time.

The +12V current of 14A on the computer power supply indicates that the +12V power supply output can provide a total of 14A of current.

Computer power supplies generally provide a variety of voltage outputs, including +5V, +12V, +, etc. For each voltage, the current value indicated on the product label is the maximum current that the power supply can provide for that voltage value.

A computer power supply is what powers a computer. Computer hardware.

All have power consumption. That is, as long as the total power consumption is less than the power consumption of the power supply, then it can be used normally.

But we don't have to follow the power consumption of the computer to buy a power supply, for example, the hardware power consumption is 400W, then we choose a 500W power supply is more appropriate. Don't go for the 400w one. Oak Rock has 100 watts of redundant space that is necessary for the computer hardware to function properly.

When we buy a power supply, we must look at its rated power.

Rated power refers to the power that the computer can work stably and continuously under normal conditions.

The parameters of the PC power supply are:

Overvoltage protection: +Overvoltage point is +, +5V overvoltage point is +, 12V overvoltage point is +.

Over-current protection: +5V output over-current protection point: 150W:,

Short-circuit protection: When any output is short-circuited to ground (the output impedance is less than that, the power supply can be automatically protected.)

Normally, the empty load will be a little higher.

After powering on, the 12V output voltage is basically between to. The general error requirement is within 3%, and the error of a good power supply is within 1%.