Abstract: A control circuit is connected to sense the impedance changes in a transformer driven ozone generating circuit cause by inadvertent immersion in water of the ozone generating field and to respond by reducing the strength of the ozone generating field as result thereof. To retain some ozone generating usefulness during the presence of mist or vapors in the ozone generating field the control circuit includes a series connected operational amplifier in the feedback loop that while operating in its linear range effects a proportional feedback response to reduce the ozone output. In this manner the usefulness of ozone generation is extended during highly active periods in a pool or spa.

Abstract: The output of a flow restricting ozone generator assembly is connected across a check valve to a low pressure port of a venturi nozzle which is connected in series in the water circulating plumbing of a pool or spa. The conveying chamber then stores the water vapors from the water flow through the nozzle which are communicated to the ozone generator to promote the reaction products hydroxyradical OH that is then drawn through the port to mix with the circulating water flow. The check valve at the outlet of the ozone generator is urged to close upon the instance when the flow through the nozzle ceases, terminating the low pressure at its throat and thereby fully confining the reaction products from inadvertent escape.

Abstract: The output of a flow restricting ozone generator assembly is connected through a conveying chamber to a low pressure port of a venturi nozzle which is inserted into the water circulating plumbing of a pool or spa. The conveying chamber then stores the water vapors from the water flow through the nozzle which are communicated to the ozone generator to promote the reaction products hydroxyradical OH that is then drawn through the port to mix with the circulating water flow. A spring biased valve at the inlet to the ozone generator is urged to close upon the instance when the flow through the nozzle ceases, terminating the low pressure at its throat and thereby fully confusing the reaction products from inadvertent escape.

Abstract: A control circuit is connected to sense the impedance changes in a transformer driven ozone generating circuit cause by inadvertent immersion in water of the ozone generating field and to respond by reducing the strength of the ozone generating field as result thereof. To retain some ozone generating usefulness during the presence of mist or vapors in the ozone generating field the control circuit includes a series connected operational amplifier in the feedback loop that while operating in its linear range effects a proportional feedback response to reduce the ozone output. In this manner the usefulness of ozone generation is extended during highly active periods in a pool or spa.