Working principle of wireless wristband and wired wristband

1, the wired electrostatic bracelet is directly discharged, and the static electricity on the hand needs to be released through the conduction of wires, so it is also called the wired electrostatic bracelet.

2. When the voltage of the wireless electrostatic bracelet exceeds 1500V, the tip will release air to eliminate static electricity. However, the static voltage required for the cordless wristband to dissipate static electricity is too high, which is not suitable for the electronic industry.

Corona discharge principle: According to the "corona discharge" effect and the tip discharge principle, when the accumulated charge exceeds a certain value, it will be discharged into space due to the potential difference, thus achieving the purpose of eliminating static electricity.

The electrostatic bracelet is used to release human static electricity. It consists of conductive elastic band, movable snap fastener, spring PU wire, protective resistor and plug or alligator clip. There are three kinds of wristbands: corded wristbands, cordless wristbands and smart anti-static wristbands. According to the structure, they are divided into single-ring wristbands and double-ring wristbands. The inner layer of elastic band is woven by conductive yarn, and the outer layer is woven by ordinary yarn.

Extended data:

Wired grounding wrist strap is the most basic anti-static equipment and the most commonly used essential product on the production line. It is not only very convenient to install and operate, but also the most economical. Its principle is to release the static electricity on the human body to the ground through the wrist strap and the ground wire, so the wrist strap must really contact with the skin when used, and the ground wire should also be directly grounded to ensure that the ground wire is unobstructed to achieve the maximum effect.

Use a bracelet to ground the operator. This simple method is the lowest cost method to control static electricity and can produce the most direct effect. The bracelet can eliminate the static electricity carried by the human body before the static electricity damages the electronic products. Therefore, anti-static bracelets are widely used in electronic industry to fully protect electrostatic sensitive devices and printed circuit boards.

Corona discharge has many functions in the field of engineering technology. Corona occurs in the wires of high voltage and ultra-high voltage transmission lines in power system, which will cause corona power loss, radio interference, TV interference and noise interference. When designing the line, we should choose enough cross-sectional area of the conductor or split the conductor to reduce the surface electric field of the conductor, so as to avoid corona.

For high voltage electrical equipment, corona discharge will gradually destroy the insulation performance of the equipment. The space charge of corona discharge can improve the gap breakdown strength under certain conditions. When lightning strikes or operating overvoltage occurs on the line, the amplitude of overvoltage can be weakened by corona loss.

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