A negative ion generator is a device that generates negative ions in the air. The device processes the input DC or AC power through the EMI processing circuit and lightning protection circuit, then through the pulse circuit, overvoltage current limiting; high and low voltage isolation and other lines to upgrade to AC high voltage, and then rectifies and filters it through special grade electronic materials to obtain pure DC negative high voltage, connect the DC negative high voltage to a release tip made of metal or carbon, use the tip DC high voltage to generate a high corona, and release a large number of electrons (e-) at a high speed, and electrons cannot exist in the air for a long time (existence The electron lifetime is only nS level) and will be immediately captured by oxygen molecules (O2) in the air, thereby generating negative air ions.
It is reported that there is a more advanced negative ion releasing tip: a nanofullerene negative ion releasing tip, which can generate pure negative ions.
Air negative ions can be divided into three types: light, medium and heavy ions according to their volume. The diameter of light ions is about 0.000001cm, and they move quickly in the electric field, with a speed of 1 to 2 cm2/V.S. In nature or in the ordinary environment, the mobility is greater than 0.4 cm2/(V.s), which is a small-sized negative ion. The diameter of heavy negative ions is about 0.0001cm, and they move slowly in the electric field, only 0.0005 cm2/V.S. In nature or in the ordinary environment, negative ions with a particle size less than 0.04 cm2/(V.s) are large-sized negative ions. The size and activity of medium-sized negative ions are between light and heavy ions.
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