impulses these impulses are fed through diodes 1 2 and 3 4 to the two pairs power q 5 6 and q 7 8 switching transistors generating simultaneously square waves of opposite polarity these are delivered through the primary windings of s 1 and s 2 of the high voltage transformer to e 1 and e 2 electrodes the secondary windings of the high voltage transformer are connected to a spark plug at which change of current impulse results in a spark producing ozone ozone is delivered with a stream of air to the water two square wave generators g 1 2 operating at about 2khz controlled by a coupled pair of operational amplifier modulate the low frequency square impulses the higher frequency impulses pass through capacitors c 1 and c 2 the two additional control units opperate as follows the ph electrode and the photo electro colorimetric phototransistor impulses from sensors 1 respectively passing through timer 2 are amplified by the operational amplifier 3 the switch 4 controlled by the timer 2 alternatively selects the water purity indicator comparator 5 or the ph indicator comparator 6 respectively the output signals of the comparator 5 signal the difference in water purity the difference is amplified by an operational amplifier 7 and fed to the on off switch 8 of the water purifier the output signals of the comparator 6 detect the difference in ph of water and through amplifier 9 and by means of a light emitting diode indicate the difference of ph from a preset level the proper preselected degree of water purity is maintained by duration of operation of the water purifier device for removal of ions from water before its immediate use for various.