Patent ID: 8289673

Claim:
A bipolar ionization apparatus comprising: a positive high voltage power supply having an output with at least one positive ion emitting electrode connected thereto and configured to generate positive ions; a negative high voltage power supply having an output with at least one negative ion emitting electrode connected thereto and configured to generate negative ions; and a microprocessor for an ionizer having an input that receives charge data from an external sensor, the microprocessor outputting a positive and negative high voltage ionization waveform, wherein the microprocessor executes an algorithm configured to: (i) determine, based upon the charge data received from the external sensor, whether an adjustment of a polarity of the ionization apparatus is required, (ii) simultaneously adjust an amplitude and a duty cycle of the waveform by incrementing or decrementing one or more respective check values for each of the amplitude and duty cycle, (iii) compare the check values to a set of limit values, and (iv) if the check values are within the limit values, change respective output values of the amplitude and duty cycle to the corresponding check values.