What is the function of anti-static mats? Why do anti-static mats need to be grounded?
When operating electrostatic sensitive components, anti-static mats made of anti-static materials should be laid on the workbench so that all SSD terminals, tools, appliances, instruments, human bodies, etc. that are in contact with them reach a basically uniform potential, and the static electricity is quickly discharged through the grounding wire on the mat. Anti-static mats should be cleaned regularly to ensure the anti-static effect.
What is the principle and function of negative ion generators? How large is its effective range?
1. Negative ion generators generate high voltage electricity and apply it to the discharge needle inside the instrument to ionize the air to produce positive and negative ions. When a large number of positive and negative ions are blown to the surface of a charged object through a fan, the surface of the object attracts ions of opposite polarity, and the static electricity accumulated on the surface of the product or equipment is neutralized and eliminated.
2. The effective range of the negative ion generator currently used in the company is: an area with a radius of 50cm with the instrument as the center.
What is the difference between anti-static ground wire and line ground wire and power ground wire?
The function of the anti-static ground wire is to provide a leakage channel to the ground for possible static charges to prevent the accumulation of local static charges. The line body ground wire and the power supply ground wire are used for grounding instruments and equipment to protect personal safety, protect equipment and facilities, reduce electrical noise and improve the quality of equipment operation. In order to prevent lightning current and fault current from flowing into the electrostatic protection system and causing damage to ESD sensitive components, the anti-static ground wire should be separated from the line body ground wire and the power supply ground wire. A circuit breaker alarm is also provided. Anti-static grounding can be ring-shaped grounding, but not series grounding.