Ion blower is a good helper to eliminate static electricity
The necessity of anti-static measures in recent years The static electricity problem of sensitive electronic components
(1) Destroy semiconductors (2) Destroy hard disks (3) Destroy liquid crystal displays Human body charged model (HBM)
Countermeasures taken by workers: grounding, conductive floor, conductive boots.
Replace insulated integrated circuit trays and packaging materials with conductive materials. The voltage of conductive materials that the instrument touches/closes to 0 volts through grounding. How sensitive electronic instruments are anti-static Most electronic instruments are made of complex insulating and conductive materials Into. Peeling/friction during transportation. Equipment damage caused by large discharge when grounding. Ion blower is used to eliminate static electricity. Therefore, it is necessary to learn more about ion blower, which type of ion blower is *applicable and how to use it to achieve *effectiveness.
Ion fan classification
Classification method (AC/DC… etc.)
Self-discharge type: carbon brush and stainless steel fiber
advantage:
Inexpensive, easy to install, no need to consider ion balance when using (for copiers, fax machines, paper, film, etc.)
Nozzle ion fan
advantage:
For point-shaped pores to eliminate static electricity, the space is limited, and when it is not suitable for fan type, nozzle-type ion fans can be used to eliminate static electricity from multiple directions. For integrated circuit point-shaped pores, the effect of static elimination is good.Notes when using nozzle-type ion fans!! Confirm whether the discharge needle is clean, because it is easy to absorb the floating dust in the air, you should choose a model that is easy to maintain and the discharge needle is easy to replace. Because you need to use air continuously, you should choose a model with a small gas flow. When installed inside the machine to remove static electricity, The discharge needles between the instruments should be kept at an appropriate distance (to prevent strong electric fields from damaging the instrument) (AC type: greater than 150 mm, DC and pulsed AC: greater than 300 mm) Because ions are easily absorbed by the peripheral equipment of the machine, the installation location should be carefully selected
Factors that should be considered when purchasing an ion blower: price, function, decay time, long-term stability and safety of ion balance, correctly operating the discharge needle, why does corona discharge cause the air around the discharge needle to be ionized, thereby generating positive and negative ions? When ions are generated, ions of opposite polarity will return to the discharge needle. Ions of opposite polarity impact and penetrate the discharge needle, which is the cause of the wear of the discharge needle. The high-pressure ion fan is easy to wear because the impact energy of high-voltage ions is large." Ion balance is easy "Tend to be negatively charged" This is because the weight of negative ions is less than that of positive ions. For DC ion fans, the positive ion discharge needles are prone to wear due to the continuous impact of negative ions. Now people have invented ion fans that have a fast and effective electrostatic removal, but the decay time may be It will increase because the large number of ion collisions produced by the discharge needle will affect the ion balance. Feedback type or pulse type ion fans solve the above problems. Even the most advanced instruments, there is a danger of instantaneous voltage fluctuations, so it is necessary to confirm the distance of using ion fans .