How to prevent static electricity
1. When using anti-static products, you should pay attention to proper grounding. Now computers generally have a ground wire. The ground wire is connected to the live line and the ground wire of the AC power at the same time with two small capacitors. Say, as long as you touch the metal of the case, you will get an electric shock (only 110V, the current is very small). The ability of the chip to withstand voltage is much less than 110V, so if the computer equipment (such as the host, printer, display, etc.) is not all grounded, the printing port and display card will be damaged. At present, many inferior wiring boards have a three-wire appearance on the outside, and their internal ground wires are not connected at all. Users should pay special attention when purchasing.
2. Chip and board shipping packaging manufacturers generally attach great importance to ESD, and computer accessories will use anti-static packaging bags before leaving the factory. Packaging materials with good insulation properties are prone to ESD, such as bubble plastic bags, foam plastics, etc. These materials are not suitable for packaging computer accessories. During production, transportation and storage, the awareness of the use of antistatic products should also be strengthened. Proper use of anti-static workbenches, wrist straps, anti-static trolleys, anti-static shelves, etc.
3. The static electricity treatment of the operation or maintenance personnel themselves. As a computer operator, always keep in mind the dangers of ESD, try to avoid touching the internal board of the computer, and if you must contact the internal circuit, add a grounding ring to your finger.
4. Workplace electrostatic treatment Conditional work place should use anti-static floor (Note: walking on various types of carpet is easy to generate high-voltage static electricity, if the indoor humidity is too low, it is easy to generate static electricity). %. During work, an antistatic workbench should also be used, and the maintenance of antistatic products should also be strengthened.
5. The chip is mounted on the board to improve the ESD immunity is low a single chip anti ESD, as the chip is mounted on a board with a higher ESD immunity. After a short-circuit pin as the fragile CMOS chip, which carried away, is the truth.
6. measuring instruments, electric iron when work needs to be grounded.