Chizhevsky ion generator PSU full build

The original concept of air ionisers is attributed to a Russian scientist called Alexander Chizhevsky. I thought I'd honour him with a build of an ioniser with a needle array styled on the Chizhevsky Chandeliers, which were large ornate metal frames with lots of ionising spikes on them, that were hung from the ceilings of large public buildings in Russia. The needle array I ended up building for this unit is based on a disk of PCB material drilled with holes and fitted with a circle of needles. I'd hoped to bend the needles out at 45 degrees, but they turned out to be very brittle. In reality, while the electrostatic precipitation of dust was a useful if somewhat messy effect, the ambient generation of trace levels of ozone and other short-lived active molecules prevalent in natural outdoor air was probably the real reason the ionisers gave a renewed freshness to the stale indoor air. Here's a link to Alexander's Wikipedia page:- https://en.wikipedia.org/wiki/Alexand... If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-   / bigclive   (extra streams and channel interaction) Or alternatively:- http://www.bigclive.com/coffee.htm This also keeps the channel independent of YouTube's advertising algorithms allowing it to be a bit more dangerous and naughty. #ElectronicsCreators You can download the Minion PCB manufacturing files at this link, ready for submitting as a single file to a PCB manufacturer:- http://www.bigclive.com/freebies.htm Here's the openscad script for the 3D printed diode former:- //BCDC Diode lead former for ioniser/ionizer difference(){ union(){ //main block translate([0,0,0]) cube([30,19,4]); } //lead recess translate([-1,9,3.5]) cube([30,1,1]); //diode recess translate([22,8,2.51]) cube([9,3,3]); //lead guide translate([29,9,-1]) cube([1.1,1,6]); }