How to calculate the rated power of desktop power supply
The maximum operating current of each output is recorded, and then compared with the power standard set by Intel to determine the rated output power of the computer power supply. Rated power is the most important standard in the power supply. Normally, the power of the power supply generally refers to the rated output power of the power supply. On the nameplate of power supply, the power indicated is rated power.
Computer power rating method, in general, the power supply of three kinds, that is, rated power, maximum output power and peak power. Today we are going to calculate the power rating of the computer power supply.
Computer power supply is the power source of computer work. Power is not appropriate, the computer will not be able to run steadily, and poor power may even cause damage to the computer. Running program, inexplicable crash or blue screen. Causes wave phenomena on the edge of the screen. Sometimes the characters displayed on the display also shake (jitter) as they appear.
It should be noted that not all parts are activated simultaneously in actual computer work, and the actual power consumption is lower than the estimated power consumption. In the assembly of the computer, you need to supply according to the rated power of your estimate your actual power consumption, in general, the actual power consumption power consumption estimation = x 70%, if you will also need to expand the equipment, also need to set aside a certain power. Generally speaking, for ordinary users, the power to buy an actual output 250W is enough, but for special needs or DIYER, because they have additional equipment such as cooling fan, power supply should buy rated power at least 300W.
Rated power refers to the environment temperature of -5 degrees to 50 degrees, voltage range of 180V~264V, the computer power supply stable output power for a long time. Computer power suppliers in the computer power test power, usually in about 50 degrees in the environment. The calibration method of rated power of computer power in general is this: in the premise of not exceeding the maximum current output by gradually reducing the load resistance, and measuring the load pressure and the ripple coefficient, when the load voltage and ripple coefficient exceeds the allowable range, record the current value as the maximum working current.
