Principle of anti-static wrist strap
The anti-static wrist strap is composed of conductive elastic band, movable buckle, spring PU cord, maintenance resistor and plug or alligator clip. It is a small device used to discharge static electricity stored in the human body to maintain the safety of electronic chips. These products are divided into corded wristbands, cordless wristbands and smart antistatic wristbands. According to the structure, they are divided into single-ring wristbands and double-ring wristbands.
principle:
The product is equipped with a snap button on the outside of the plastic block. The buckle passes through the metal connector, passes through the plastic block, and is connected with the conductive tape inside the plastic block, thereby forming two independent circuit loops. The plastic block is divided into left and right parts. The two plastic blocks are connected to each other, and the buckles on the outer sides of the two plastic blocks are respectively connected to respective ground terminals. This product is compared with the existing traditional wristbands. When the wearer of the wristband is not aware of the situation, even if one circuit fails, the other circuit can continue to work, thereby reducing the possibility of electrostatic breakdown of the insulation layer of electronic components, avoiding a large number of waste or low-quality goods. Operating costs are low. And extend the service life of the wristband. Suitable for high-end customers.
Function: Use a wrist strap to ground the operator. This simple method is a cost-effective way to control static electricity, and can produce the most direct effect. The wrist strap can dissipate the static electricity of the human body before the static electricity damages the electronic products. Therefore, anti-static wrist straps are widely used in the electronics industry to adequately maintain static-sensitive equipment and printed circuit boards.
1. Comfort
The bracelet is made of thermoplastic material, is lightweight, thin and soft, can safely come into contact with human skin and is easy to use. The "pull button" type locking structure can be adjusted at will, suitable for wrists of various sizes. The conductive inner wear layer uses 3M's common "comfort pad" program to ensure air circulation between the bracelet and the skin, so that the wearer feels more comfortable.
2. Connect
A bundle of metal wires and high-strength synthetic fibers in the connecting wires are intertwined to increase tension. Each end of the grounding wire is equipped with a tension relief system planned by 3M. This system can reduce the pulling force on the terminal, which helps to reduce the number of replacement ground wires. 3M's universal button design can ensure close contact between the ground wire and the wrist strap, allowing the wearer to move freely, and the built-in 1 megohm resistor also limits the current flowing through the ground wire.