NRD Static Control LLC

Corona (AC) ionizers work by applying an alternating high voltage to the tip of a sharp point producing an electrostatic field in the vicinity of the point. This electrostatic field is of sufficient strength to cause electrons to be stripped from the air molecules within the field. During the positive half of the AC cycle, the free electrons quickly attach to a nearby air molecule and are attracted toward the point while the resulting positive air molecule is repelled from the point. During the negative half the AC cycle, the effects are reversed. Positive ions are attracted to the point and negative ions are repelled.