Basically the water is pumped into the pressure vessel when the internal float switch is closed. The PWM is used to produce and electrical pulse which is tuned to the resonant frequency of the inner electrodes. This vibrates the water trapped between the outer and inner tubes. The outer tube is charged positive and is tuned exactly 180 degrees out of phase with the inner tube. The vibration wave is propelled by the positive charge towards the outer tubes just to be attenuated by the outer tube tuning.

The excited water molecules 2(H2O) now only require a fraction of the amperage to be converted into (2H2 + O2). Also experimentation of harmonic frequencies have produced interesting results, sometimes exceeding HHO production of the tubes at resonance. The vessel has a large inner and outer tube which is tuned 4 octaves lower than the outer tubes and has a clearance between the tubes of only 1mm. This tube produces the most heat and HHO. The smaller outer tubes have a 2mm clearance and run cooler and take less amperage and are mounted around the large tube assembly. The epoxy used to seal the bottom inside of the vessel and bottom of the electrical enclosure is laced with ferrous oxide dust 10% by weight which creates an check valve capacitor which smoothes out the square wave pattern to a sine wave pattern which helps the transition between off and on for the PWM. Experimentation with an air coil after the mosfet drivers and before the load also resulted in an increase of efficiency.