Static eliminators are mainly used to prevent static discharge. Controlling electrostatic discharge should start from two aspects: controlling the generation of static electricity and controlling the elimination of static electricity. Controlling the generation of static electricity mainly involves controlling the process and the selection of materials during the process; The elimination of static electricity is mainly to accelerate the leakage and neutralization of static electricity. These two points work together to ensure that the electrostatic voltage does not exceed the safe threshold, in order to achieve the purpose of electrostatic protection.

Static electricity can cause harm to electrostatic sensitive devices, but it is controllable and can be eliminated. To this end, it is necessary to discuss the safe working principle of static electricity protection systems in the production process, as well as static eliminators and static electricity protection methods.

To eliminate static electricity, it is necessary to first clarify the basic idea of static electricity protection:

1. Avoid the accumulation of static charges in areas where static electricity may occur. Take certain measures to avoid or reduce the generation of electrostatic discharge. The method of generating and leaking at the same time can be used to eliminate charge accumulation.

2. The existing charge accumulation should be quickly eliminated. When an insulating object is charged, the charge cannot flow or leak, and a static eliminator can be used to generate opposite ions to neutralize the static charge. When the charged object is a conductor, a simple grounding leakage method is used to completely eliminate the charge it carries. To form a complete electrostatic safety work area, it should at least include effective electrostatic pads, dedicated grounding wires, and anti-static wristbands.

2. The basic protection approach for static electricity is to adopt comprehensive measures to control the hazards of static electricity within the allowable range when the accumulation of static charges is inevitable.

(1) The purpose of process control is to minimize the generation of electrostatic charges during the production process. Preventive measures should be taken for the selection of materials, equipment installation, and operation management in the process flow to control the generation of static eliminators and the accumulation of charges, suppress static potential and discharge energy, and minimize hazards.

(2) The purpose of leakage method is to eliminate static charges through leakage. Generally, static eliminators are used to ground and cause charges to leak to the ground. The method of increasing the conductivity of objects is usually used to cause static electricity leakage.

(3) The electrostatic shielding method uses a grounded shielding cover to isolate the charged body from other objects, so that the electric field of the charged body will not affect other surrounding objects. This shielding method is called internal field shielding. Sometimes a grounded shielding cover is also used to surround the isolated object to protect it from the influence of external electric fields. This shielding method is called external field shielding.

(4) Composite neutralization method and other methods that achieve the elimination of static charges through composite neutralization. Usually, the opposite ions generated by static eliminators are used to neutralize the charge of charged objects, which may make the surface of the charged object smooth and the surrounding environment cleaner, thereby reducing the possibility of tip discharge.