Therapeutic Ozone Generator R. Diaz, A. Márquez, J. C. De Armas, C. Pérez, C. Triana, F. Tabares. Ozone Research Center, Cuba. During more than 10 years, ozone generators built in Cuba have been employing the 60 Hz normal line frequency to do their job. Recently in our country. This technology by means of medium frequency is applied on ozone production. The equipment present features like: working time regulation, digital visualization of the applied voltage, electronic protection against overcorrect and start up, lower size and weight. An improve in the generation efficiency was obtained. Source: 2nd International Symposium on Ozone Applications Havana, Cuba - Mach 24-26, 1997.