Anti-static wrist strap usage
This article mainly describes how to use the anti-static wrist strap, as well as some related practical tools and methods.
Anti-static wrist strap
Anti-static table mat
★Principle
The anti-static wrist strap and the anti-static table mat are tools used to establish electrical connections between the human body, equipment and the earth. There are two uses, one is the equipotential method and the other is grounding.
The equipotential method uses an anti-static wrist strap and an anti-static table pad to electrically connect the human body and the equipment. The static electricity of the human body and equipment will reach an equilibrium state, that is, the electric charges of the two are equal, which is called equipotential, so that no electrostatic discharge will occur.
Although the equipotential method can avoid electrostatic discharge, it cannot eliminate static electricity. The professional approach should be to connect the human body, equipment and the earth, as shown in the figure above. At this time, the earth will absorb the static electricity of the human body and equipment, and completely solve the static electricity problem.
★Usage of anti-static wrist strap
◇Equipotential
You can wear the wristband on your wrist, and clamp the other end to the computer case or the "unpainted metal part" of the power supply, as shown in the figure below.
Connect the wrist strap to the "unpainted metal part" of the chassis
If the exterior of the chassis and the power supply are all painted, you can first replace the screws that fix the power supply with a single-head hexagonal copper column, and then attach the wrist strap to the copper column, as shown in the figure below.
Host power cord ground pin