We found this circuit in the magazine Eletcronics Now of July 1994. The power supply is according to the relay and the transistor can be any general purpose one.
May 2017 - Mouser Electronics is providing Murata MHM306, 305 and 500 ionization and ozonation...
September 2016 - It can be purchased from Mouser Electornics the iW1818 of Dialog Semiconductor, a...
This circuit came out in an English magazine from 1977, but it can be easily assembled today, as...