Peak power

honggarae 15/02/2023 385

defined

power P.P i.e. peak power, the rated output power of the rms voltage, the peak voltage obtained in terms of power. Because the peak voltage is equal to 1.414 times the RMS voltage, the peak power is equal to 2 times the rated power

hard peak power

means the maximum power supply can be achieved in a short time, typically only to maintain a period of about 30 seconds. Under normal circumstances the power peak power may exceed the maximum output power of about 50%, since the hard disk in the activated state its normal value when the work requires much energy is large, the buffer system provided by the current frequently needed for the hard disk boot , after starting to full speed will return to normal levels. In fact, the peak power of little practical significance, because the power supply can not generally stable work at peak output.

difference

Power Computer "rated power" and "peak power" of

model does not mean power

have a lot of power named contain some numbers, such as "ATX-3XX" and so on, however, the vast majority of market power, the model does not represent power, but is so named manufacturers play the numbers game. As far as we know, quite a few models contain "3XX" of the power supply, 200W rated power are less, the output power will not exceed 250W.

Of course, not all of the power supply manufacturers are playing "trick", after all, there are some examples of honesty, such as the Great Wall "ATX-300S", HuntKey rock series.

identifying

to identify the rated power, the output power

Only a few manufacturers indicate the label of the power supply in the rated power, and the power of the brand-name manufacturers In addition to the "power rating", there is a "output", and that in the end is the rated power or output power to prevail in it?

rated power according to manufacturers standard INTEL be labeled, it is only a standard, while a better reflect the actual output power capability of the "output." why would you said this?

We normal rated power of 300W, for example, in accordance with standard INTEL, the maximum value of the primary current is outputted ATX2.03 version: + 5V = 30A, + 3.3V = 20A, + 12V = 12A , the maximum current value of the primary output ATX12 version is: + 5V = 30A, + 3.3V = 28A, + 12V = 15A.

ATX 2.03 ATX 12V

+ 5V 30A

30A + 3.3V 20A 28A

+ 12V 12A (peak 14A) 15A ( peak 18A)

compare two versions of the standard output, you can see, ATX12V of + 3.3V and + 12V output is higher than ATX2.03, which means the same rated power is 300W power supply, power supply ATX12V version of the actual output is higher than the actual output ATX2.03 version, that is ATX12V power supply, the actual output capacity of more than 300W, the actual output capacity, we are known as the "output", some manufacturers called " The maximum output power stability. "

In addition to different versions of the actual output is not the same, the same version of the power supply, such as are made out in accordance with standard power 300W ATX2.03 version, the actual "output" is not the same, this view , it can be understood from the following aspects.

+ 5V and + output (1) 12V, generally there is a peak output of this indicator, such as the + 12V, the maximum output is. 12A, 14A and the peak output can be achieved, in some cases, the power supply may the peak current operation, i.e. higher than 300W. Some power also has overcurrent protection, protection current can reach 40A, which means that the + 5V power supply can exceed the standard definition of 30A, 40A reached when the power is turned off.

(2) selection of each manufacturer, the production process is not the same, the actual work of the "output" are not the same. Better selection, more sophisticated technology, "output" also can be made higher. In general, the "output" of the actual work can be higher rated power 50 ~ 80W.

actual output capacity

The actual power output capacity is affected by the ambient temperature, which is a lot of friends may not know.

is generally in the winter, the actual output power is higher than in the summer. Some friends use the computer in normal winter, summer feel inadequate power supply, but generally do not think is caused by the ambient temperature.

Since the temperature will affect the output power, so for power tension friends, choose a good heat dissipation power becomes necessary, in general, the better the greater the amount of wind power, cooling effect. The amount of wind power is also a lot, such as China calm King, Star of the Century windmill, wind in more than 22CFM, are a good choice.