Paul,

Google for negative ion generator schematic to perhaps give you
some ideas

An Australian magazine (ETI) published projects for negative ion
generators in the 80's. One version was intended for cars, powered
from the battery. A 555 driving a small 12V-230V transformer (an
off-the-shelf 230V-12V installed backwards) and a few Cockcroft-
Walton doubler stages after that

Joe
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