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    Teach you about lightning
    Let's understand how the lightning destroys the computer, and then we can know how to effectively prevent the lightning strike. Because the exposed circuit will generate a high instantaneous voltage or current when it is subjected to a lightning strike, forming a surge voltage or surge current, and then passing through the line to cause damage to electrical equipment. The damage to electrical equipment caused by lightning strikes mainly through the following three aspects: 1. Direct strike lightning Direct strike lightning contains great energy, and the peak voltage can reach 5000KV or even higher, which has great destructive power. The first is that the lightning current generates strong electromagnetic waves, which induce high pulse voltages on the power and signal lines; the second is that the lightning current flows through electrical equipment to generate extremely high heat, which causes the electronic equipment (components) to melt. 2. The extremely high voltage generated by conductive lightning strikes on the line is transmitted to the building through outdoor power lines and communication lines, which damages the electrical and electronic equipment connected to the line. 3. Inductive lightning Inductive lightning generally comes from lightning strikes and inter-cloud discharges. Among them, the induced surge voltage generated by lightning strikes is large. Generally, electronic information equipment within a range of 500 meters may be damaged by it, and it also mainly enters from power lines And intrusion from the signal line. Why Thunder and Lightning Attack Computers Understand how lightning and lightning strike computers, and then look at the reasons why lightning and lightning strike computers. It is obvious. Today, the power supply wiring design of the building will be added with the laying of the ground wire. The purpose is to prevent the lightning strike from hitting the power line during the thunderstorm, and to smoothly introduce the current into the ground. In addition, the static electricity generated by the electrical appliances during the use of electricity can also be discharged through the ground wire to ensure the safety of electrical equipment. However, some users, for the sake of greed, purchase low-quality power strips and sockets. Due to cost reasons, such power strips and sockets have not been designed with ground wires, or the ground wires have very thin wires that cannot release lightning strike current and static electricity quickly Function, after the lightning strikes the wire, the current cannot be quickly released to the ground wire, but it is raging in the electrical equipment and damages the electrical equipment. For broadband wiring, the signal line is generally moved from the operator's room to the user's room through outdoor wiring. And because the operator's room is a certain distance from the user's room, the operator may suspend the signal cable exchange box directly on the outer wall or raised part of the building when wiring, and no lightning protection measures are taken. , Leaving hidden dangers of lightning strikes. In addition, users are generally not aware of the safety precautions against lightning strikes, so that during the thunderstorm season, there are lightning storms outside, and the house is also busy playing games and surfing the Internet. When the computer is damaged by lightning, it is too late to regret it.
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