Patent ID: 7170734

Claim:
Air ionization device, comprising: a high voltage line connectable to an AC voltage power source; and point electrodes coupled capacitively to the high voltage line for generating a corona discharge; wherein: at least two of said point electrodes are each connected via an associated diode to an externally defined DC voltage potential and are each connected via an associated capacitor to the high voltage line; a first of said at least two point electrodes is connected to the cathode side of the associated diode and a second of said at least two point electrodes is connected to the anode side of the associated diode; the corona discharge is adapted to be formed between the first and second electrodes; and positive charge carriers are generatable at the first point electrode and negative charge carriers are generatable at the second point electrode continuously and simultaneously; each diode is directly connected to the associated point electrode, and each capacitor is directly connected to the associated point electrode.