Old shoe deodorizer ozone unit (no microcontroller)

This unit's quite old. I got it a long time ago to help dry and deodorize my work boots.
In the end, the secret to keeping my work boots fresh was a tiny pinch of fine powder boric acid, which kills all fungal stuff stone dead. (including athletes foot).

The construction of this and it's circuit design seems fairly sensible though. There's no microcontroller, so everything is done with discrete circuitry to add "features".

The high voltage section has had the number scrubbed off its chip and black resin painted on some component identifiers, so it seemed a good idea to reverse engineer it as an act of defiance.

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