Is it right to turn off the monitor after finishing using the computer?

#After using the computer, the power of the monitor should be turned off to avoid instantaneous inrush current when the power is turned on.

Computers are weak current products, which means that the working voltage of the components is relatively low, generally within plus or minus 12 volts, and is direct current. (Recommended study: webfront-end video tutorial)

The ordinary mains power is 220 volts (110 volts in some countries) alternating current and cannot be used directly on computer components. Therefore, computers, like many home appliances, need a power supply section, which is responsible for converting ordinary mains power into voltage that the computer can use, and is generally installed inside the computer.

The core components of the computer work at a very low voltage, and because the computer operates at a very high frequency, it has relatively high power requirements. At present, the power supply of computers is a switching circuit, which converts ordinary alternating current into direct current, and then controls the voltage by chopping, and outputs different voltages to computer components such as motherboards, hard disks, and optical drives.

The power supply is the heart of the computer. A poor quality power supply will not only damage the motherboard, hard drive and other components, but also shorten the normal service life of the computer.

Of course, the price of a high-quality power supply will not be cheap, so some businesses often use cheap power supplies to deceive consumers, and some users themselves do not know much about this, but only pay a few dozen yuan. The price difference may result in a loss of thousands of dollars, which is indeed not worth it, so when purchasing, pay special attention to whether the quality of the power supply is excellent.

Requirements for creepage distance

The creepage distance refers to the shortest distance between two conductive devices or between a conductive device and the equipment interface measured along the insulating surface. UL, CSA and VDE safety standards emphasize the safety requirements of creepage distance, which is to prevent fire between devices or between devices and ground, thereby threatening personal safety.

Requirements for electrical strength

When zero voltage is added between the AC input lines or between the AC input and the chassis to AC 1500V or DC 2200V, no shock Passing through or drawing the arc is considered qualified.

Leakage current requirements

Both UL and CSA require that exposed, non-energized metal parts should be connected to the earth. Leakage current is measured by connecting a 1.5 kiloohm resistor between these parts and the earth, and measuring the leakage current. The leakage current of the switching power supply should not exceed 3.5mA under 260V AC input.

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