The role of anti-static wristband
The so-called static electricity is a kind of static charge, or a non-flowing charge (the flowing charge forms a current). When charges accumulate on an object (such as a human body or an article) or on the surface, static electricity is formed. When an object with static electricity contacts a zero-potential object (such as various grounded objects such as metal gates and faucets) or an object with a potential difference from it At this time, charge transfer occurs, spark discharge phenomenon occurs, and people also have an electric acupuncture sensation.
The anti-static wristband is mainly used for welding components that are easily damaged by static electricity, especially when wearing valuable chips to prevent static electricity from penetrating components. It can be simply divided into two types: cordless antistatic bracelet and cordless antistatic bracelet.
1. Corded anti-static bracelet
Because of its simple operation and low price, it has become the most basic anti-static device, and it is the most widely used anti-static wristband for electronics enthusiasts and repairers. It consists of an anti-static elastic band, a movable snap, a spring flexible wire, a protective resistor and a chuck. When wearing, you need to ground the wristband and wristband, so that the static electricity generated by the human body can be quickly discharged through the wristband to the grounding system.
The precautions when using the rope anti-static bracelet are as follows:
(1) The wrist strap must be in contact with the skin during use, and the ground wire must be directly grounded, and the ground wire must be unobstructed to maximize the effectiveness of volatilization.
(2) During work, the continuous bending of the wristband wire of the wristband will eventually disconnect the metal brazing wire inside the wire, which will cause the antistatic function of the wristband to fail. Make sure the wristband is good.
2. Cordless anti-static bracelet
It is based on the physical principle of static voltage balance, and is based on the principle of static electricity in "electrostatic engineering". The cordless anti-static wristband is easy to use, but it is more expensive compared to the price. You must choose different anti-static wristbands to wear according to different workplaces.