Ozonator power supply

Claim 1

A power supply circuit for an ozonator comprising: a. a DC/AC semiconductor switch bridge inverter coupled at its input terminals of a resonant network, said semiconductor switch bridge inverter comprising a first semiconductor switch means for conducting through the resonant network in a first direction and a second semiconductor switch means for conducting through the resonant network in a second direction; b. said resonant network having a step up high voltage transformer with its primary winding coupled to said semiconductor switch bridge inverter and its secondary winding coupled to the ozonator; and c. an inverter control circuit for controlling the gating electrodes of said first and second semiconductor switch means, said inverter control circuit comprising first and second AND gate means for controlling gating of said first and second semiconductor switch means, for generating a switching frequency square wave signal and applying it to a first input of each of said first and second AND gate means, and means for generating a high frequency pulse train and applying it to a second input of each of said first and second AND gate means, such that the first and second AND gate means generate gating signals to cause said first and second semiconductor switch means to operate in a pulse burst modulation mode wherein the switching frequency of the square wave signal controls the timing between pulse bursts, and the number of high frequency pulses within each pulse burst is controlled by the frequency of the high frequency pulse train and the width of each pulse in the square wave signal.