Vintage Kenwood ioniser teardown - with schematic

A very interesting and stylish variant on the classic air ioniser. These units are designed to impart an electrostatic charge into the ambient air to encourage microscopic dust, pollen, spores, viruses and bacteria to precipitate out to surrounding surfaces.

This unit has a generous multiplier and unusual aspects to its design. It's a real ionizer - not an ozone generator, although very tiny amounts of ozone and other short lived active air molecules will be generated in use. Well below the level that occurs in natural outdoor air.

It can be improved greatly by plugging one or more carbon fibre tufts onto the emitter needles so they stick up above the case.

It looks like they were hedging their bets with the design, as there is a space in the base for a resin potted ionizer module. Maybe for use in 120V countries where the multiplier is less practical.

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