Inside a faulty Puripod ozone generator.

I bought this unit thinking it was an air ioniser, mainly because most of the listings advertise it as one. It's not. It's an ozone generator and uses a high frequency AC corona discharge to generate ozone in the air being blown through the unit by a fan.
The illusion of being an ioniser was aided by a marketing video which showed it clearing smoke in a closed chamber, a popular demonstration with real ionisers due to rapid electrostatic precipitation of dust and smoke onto surrounding surfaces. It's notable that the video showing it had to jump-cut to allow the smoke to dissipate naturally, as an ozone generator does not precipitate out smoke and dust. It's main function is to oxidise airborne contaminants like smells and bacteria.
The unit is actually quite nicely designed, and has good filtering to comply with European electrical interference suppression requirements. The circuit is good quality, including the very nice potted high voltage transformer which probably shares a pedigree with cold cathode backlighting power supplies.
It has an odd quirk. The ozone level adjustment knob has a switch at the end of travel that turns off the fan, but the ozone generator remains active at a low level. It might be as an option for low level operation with no fan noise, but will result in a high concentration of ozone inside the unit.
Although new and sealed, this unit has clearly had a very rough experience at some point. Several copper pads had detached from the PCB in the area of the suppression circuitry and the common mode inductor had a shattered core. This was resulting in an arcing noise and intermittent operation. It's something to keep in mind if you get a unit that doesn't light up when plugged in. If you open one of these, take care to dress the wires inside away from the high voltage circuitry in the middle when closing it again.
In summary. It's not an ioniser/ionizer, it's an ozone generator. It looks neat, it's seems to be well designed and it does work as a low level ozone generator.
Power consumption is:-
1.5W in standby with no fan.
2.3W at the lowest setting with fan.
2.6W at the highest setting with fan.
Power factor is a rather poor 0.066 standby to 0.13 at full output according to the Hopi meter. (Some smart meters will charge up to 10 times as much if set to measure apparent power.)
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