The principle of antistatic film
According to the "Faraday cage" ("Faraday cage" is made of metal mesh, it demonstrates the principle of electrostatic shielding. "Faraday cage" generates a charge at the site close to the external electric field under the action of external electricity, inductive charge electric field and external electric field. The electric field inside the cage is always zero. The principle design is suitable for the packaging of static sensitive products such as PCB and IC, which can prevent damage caused by electrostatic discharge. Sensing parts such as MOS, CMOS, FET parts, etc. After the electrostatic shielding bag is packaged, everything can be safely carried out.
Electrostatic shielding protects the instrument or working environment within the metal conductor housing from external electric fields and does not affect external electric fields. In order to avoid interference, some electronic devices or measuring devices must be electrostatically shielded, such as a grounded metal cover or a dense metal mesh cover for the indoor high-voltage device cover, and a metal tube for the electron tube. Another example is a full-wave rectification or bridge rectification power transformer. A metal foil is placed between the primary winding and the secondary winding or an enamel wire is wound and grounded to achieve shielding. In high-voltage live working, workers wear a pressure equalizing suit woven with wire or conductive fiber to shield the human body. In the production process of the electronics industry, there are also products that use the principle of electrostatic shielding. The following describes the types and characteristics of several anti-static bags in the electronics industry.
