METHOD AND APPARATUS FOR CONTROLLING AMOUNT OF OZONE PRODUCTION USING DUAL FREQUENCIES

摘要

PURPOSE: A method and apparatus for controlling the amount of ozone production using dual frequencies especially in ozone generator adopting silent discharge are provided, which control ON/OFF time ratio of high frequency and high voltage pulse according to ON/OFF time ratio of other frequency which is relatively lower than frequency of high frequency and high voltage pulse, thus can obtain ozone generation rate changeable lineally according to control input signal. CONSTITUTION: The method for controlling the amount of ozone production using dual frequencies includes the steps of generating a first signal of direct voltage of 5V to 10 V for controlling ozone generation rate; generating a second signal having ON/OFF time ratio in response to the first signal; generating a third signal of pulse signal having frequency of 1 Hz to 5 kHz having ON/OFF time ratio in response to the second signal; generating a fourth signal of pulse signal having 1 kHz to 50 kHz; and controlling the ON/OFF time ratio of the fourth signal to change according to the ON/OFF signal of the third signal.