Live-build 3kV positive ion dust collector PSU.

I think this might be the first live build I've done from the bench.
It's a high voltage step up circuit designed to create a high positive voltage on a panel to try and encourage dust charged by a negative ion generator to settle out on the panel instead of on walls and furnishings.

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The components used were 10 100nF X2 suppression capacitors, 10 1N4007 1A 1kV diodes and two 1 Megohm half watt resistors.
The diodes and capacitors are used to make a simple Cockroft Walton voltage multiplier that steps the voltage up to about 3kV, and the two resistors chosen partly for their resistance and partly for their higher voltage rating provide safety current limiting and separation from the mains supply. The resistor voltage doesn't have to be 3kV as that voltage will not normally be seen across them.

The case is a bit of 1.5" (37mm) plastic drain pipe with either drainage end caps or 3D printed caps with holes for the cable gland and output banana socket.

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