pzl@hjuxa.UUCP (pzl) (04/03/88)
Hi, I want to build my own air filter/air ionizer (negative ion generator). Bionair, Norelco, and a few other manufacturers have the units for over $100, and it seems like it should be easy/cheaper to make one. I already have a filterer made of a muffin fan and a norelco replacement filter, but I have no idea where to get something that will generate the ions. Anyone have any ideas??? Thanks in advance, Pete
adam@lamont.Columbia.edu (adam levin) (04/06/88)
In article <867@hjuxa.UUCP>, pzl@hjuxa.UUCP (pzl) writes: > ... > I want to build my own air filter/air ionizer (negative ion generator). > Bionair, Norelco, and a few other manufacturers have the units for over > $100, and it seems like it should be easy/cheaper to make one. ... I remember reading that some poorly designed NIGs that were being sold put out ozone. A nice thing to have in the atmosphere, but dangerous in your house. I think you may be better off checking Consumer Reports, then spending the money for a quality unit. -Adam Levin -- Phone: (914) 359-2900 x340 Post: Lamont-Doherty Geological Observatory / Palisades, NY 10964 USENET: {ihnp4, decvax, seismo} philabs!lamont!adam ARPA: lamont!adam@columbia.edu
cgs@umd5.umd.edu (Chris Sylvain) (04/07/88)
In article <475@lamont.Columbia.edu> adam@lamont.Columbia.edu (adam levin) writes: >... ozone. A nice thing to have in the atmosphere, but dangerous >in your house. Try: "..a nice thing to have in the UPPER atmosphere.." Ozone near the ground is just as nasty as in one's house. Ask any smoggy city. -- --==---==---==-- .. the Jabberwock, with eyes of flame, .. ARPA: cgs@umd5.UMD.EDU BITNET: cgs%umd5@umd2 UUCP: ..!uunet!umd5.umd.edu!cgs
awylie@pyr1.cs.ucl.ac.uk (04/08/88)
I have seen several ionizer projects in electronics magazines here in England. They all are just EHT generators, typically a few thousand volts, connected to a sharp point. This generates a brush discharge which ionizes the air. You have to be a bit careful with the EHT of course.