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Registered Member #3300
Joined: Sat Oct 09 2010, 11:57PM
Location:
Posts: 8
Hi guys, I am trying to make an ozone generator. I have a ZVS driven flyback going to a glass with tinfoil around the inside and outside. there is no hiss or corona discharge or anything. The voltage is at least 8kv. Do I need to ground one side of the flyback to get corona?
Registered Member #3300
Joined: Sat Oct 09 2010, 11:57PM
Location:
Posts: 8
ok i have discovered something strange. when i move the electrode thats attached to the foil thats on the outside of the glass away, it arcs to this foil as if the glass wasnt even there! how can the outside and inside foil be making contact? is it acting as a capacitor??
Registered Member #3300
Joined: Sat Oct 09 2010, 11:57PM
Location:
Posts: 8
more experimentation - I took the outside foil off and arc'd to the glass using a wire - small arcs and corona and ozone which is what i wanted. this thing must be acting as a capacitor lol! I guess i have to use wire mesh instead?
Banned on 1/22/2011 for repeated rule violations after multiple warnings. Registered Member #3299
Joined: Sat Oct 09 2010, 08:11PM
Location: Bantown, USA
Posts: 220
how about jm's 100kv flyback driver, that creates lots of corona:-D
Registered Member #2893
Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
Yes it does, but you need to get it quite hot. From what I understand you have 2 pieces of foil separated by a piece of glass. That is a capacitor and at HVAC it will be conductive. Typically when I need ozone I use to pieces of aluminum mesh separated by a 3/32" lexan sheet. I then full wave rectify the power source.
Registered Member #3300
Joined: Sat Oct 09 2010, 11:57PM
Location:
Posts: 8
Why would this capacitor only attenuate high voltage 20KHz signals, yet not attenuate a low voltage 20KHz signal? I also coiled a wire around the glass and the same thing happened. I do have a working system now though :-
Registered Member #2893
Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
I don't think the capacitor was to blame. I pin the fault on corona, and looking at your picture there is tons of it. With a low voltage signal corona doesn't happen and it passes right through the cap unharmed. When you crank up the volts however, a lot of power is lost as corona and the signal tends to be weak and filled with noise.
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High voltage ozone generation
