How to prevent Thunder on computer in summer

Recent thunderstorms in some areas, it is true to the vast number of users of the security of the use of the computer has caused a certain impact, although we have to plug or switch power supply of lightning protection concerns, but there are still some misunderstanding and wrong view, here I have a few views, I hope to help mine.

1. Switching power supply, most is "suspended"

Many sockets in the ground is useless, and did not introduce a switching power supply, the individual design used, is through a high-voltage capacitor directly connected to the DC output, but this function and most of the design of the Lightning protection is not related.

2. Lightning protection, to rely on the switching power supply in the pressure-sensitive resistors

This resistor bridging between the line of fire and 0 lines, when the moment of high pressure from almost insulation state into a conduction state, so that the line of fire and 0 lines on the equivalent of a voltage-sensitive resistor short-circuit and form a circuit (current no longer through the computer), forcing control of the entire line of the air switch trip

3. Most of the lightning-proof plug is not qualified

Generally relatively simple design is to install a pressure-sensitive resistor, the disadvantage is that when the surge is too large can cause the varistor explosion. A better lightning protection module will shunt multiple varistor, as well as overheating insurance pipe, overload fuse and so on, and lightning-proof air switch is more complex, protect faster.

Therefore, for the use of FireWire and 0 line between the pressure-sensitive resistors to plug, whether it is two holes or three sockets, is really hit by lightning, the effect is the same. If the lightning protection effect is good, it is recommended to buy with high-grade lightning protection module of the row, in addition to lightning, there are overload, overheating and filtering functions, of course, the price is higher.