If you need assistance, please send an email to forum at 4hv dot org. To ensure your email is not marked as spam, please include the phrase "4hv help" in the subject line. You can also find assistance via IRC, at irc.shadowworld.net, room #hvcomm.
Support 4hv.org!
Donate:
4hv.org is hosted on a dedicated server. Unfortunately, this server costs and we rely on the help of site members to keep 4hv.org running. Please consider donating. We will place your name on the thanks list and you'll be helping to keep 4hv.org alive and free for everyone. Members whose names appear in red bold have donated recently. Green bold denotes those who have recently donated to keep the server carbon neutral.
Special Thanks To:
Aaron Holmes
Aaron Wheeler
Adam Horden
Alan Scrimgeour
Andre
Andrew Haynes
Anonymous000
asabase
Austin Weil
barney
Barry
Bert Hickman
Bill Kukowski
Blitzorn
Brandon Paradelas
Bruce Bowling
BubeeMike
Byong Park
Cesiumsponge
Chris F.
Chris Hooper
Corey Worthington
Derek Woodroffe
Dalus
Dan Strother
Daniel Davis
Daniel Uhrenholt
datasheetarchive
Dave Billington
Dave Marshall
David F.
Dennis Rogers
drelectrix
Dr. John Gudenas
Dr. Spark
E.TexasTesla
eastvoltresearch
Eirik Taylor
Erik Dyakov
Erlend^SE
Finn Hammer
Firebug24k
GalliumMan
Gary Peterson
George Slade
GhostNull
Gordon Mcknight
Graham Armitage
Grant
GreySoul
Henry H
IamSmooth
In memory of Leo Powning
Jacob Cash
James Howells
James Pawson
Jeff Greenfield
Jeff Thomas
Jesse Frost
Jim Mitchell
jlr134
Joe Mastroianni
John Forcina
John Oberg
John Willcutt
Jon Newcomb
klugesmith
Leslie Wright
Lutz Hoffman
Mads Barnkob
Martin King
Mats Karlsson
Matt Gibson
Matthew Guidry
mbd
Michael D'Angelo
Mikkel
mileswaldron
mister_rf
Neil Foster
Nick de Smith
Nick Soroka
nicklenorp
Nik
Norman Stanley
Patrick Coleman
Paul Brodie
Paul Jordan
Paul Montgomery
Ped
Peter Krogen
Peter Terren
PhilGood
Richard Feldman
Robert Bush
Royce Bailey
Scott Fusare
Scott Newman
smiffy
Stella
Steven Busic
Steve Conner
Steve Jones
Steve Ward
Sulaiman
Thomas Coyle
Thomas A. Wallace
Thomas W
Timo
Torch
Ulf Jonsson
vasil
Vaxian
vladi mazzilli
wastehl
Weston
William Kim
William N.
William Stehl
Wesley Venis
The aforementioned have contributed financially to the continuing triumph of 4hv.org. They are deserving of my most heartfelt thanks.
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
Thanks, the discharge is not "loud", it just hisses silently like a wind (probably as the particles shoot from the nails they move air too).
I can't actually see any corona discharge (the type you get between two HV electrodes just before an arc strikes), just the very tips of the nails glowing dimly.
It has been on for a few hours (with some breaks) so far and I did not notice any problems or irritations. What I'm more concerned about is prolonged exposure to low concentration of ozone
Registered Member #1407
Joined: Fri Mar 21 2008, 07:09AM
Location:
Posts: 222
Dr. Kilovolt wrote ...
Thanks, the discharge is not "loud", it just hisses silently like a wind (probably as the particles shoot from the nails they move air too).
I can't actually see any corona discharge (the type you get between two HV electrodes just before an arc strikes), just the very tips of the nails glowing dimly.
It has been on for a few hours (with some breaks) so far and I did not notice any problems or irritations. What I'm more concerned about is prolonged exposure to low concentration of ozone
maybe if your so scared about ozone you buy a proffesional one
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
Dr.Volt wrote ...
maybe if your so scared about ozone you buy a proffesional one
I don't like shelling out big $$ for something I can build for free (I believe these things are hugely overpriced), plus I can have much better control over output voltage/power etc. And whats the fun in that you just buy something when you can do it yourself
I just need someone experienced to tell me if the ozone is a problem or not...
Registered Member #135
Joined: Sat Feb 11 2006, 12:06AM
Location: Anywhere is fine
Posts: 1735
The $600 Living Air ionizer almost knocked me over with ozone as I walked by its Kiosk. They try to use activated carbon to reduce Ozone but its still emitted.
The reality of ionizers in your home is you just let it emit its Ozone while you're away because you set it on a 5 minute timer or whatever is sufficient for your home.
Registered Member #95
Joined: Thu Feb 09 2006, 04:57PM
Location: Norway
Posts: 1308
Dr. Kilovolt wrote ...
I just need someone experienced to tell me if the ozone is a problem or not...
Bjørn wrote ...
Ozone can make you sick as a dog in just a few minutes and it is not a very pleasant experience. So if you feel any of the symptoms it is a good idea to open a window.
If nausea, headaches, stinging eyes and gradual lung damage are a problem then yes. Ozone is so reactive though that it I imagine it will just decompose into oxygen in under an half an hour.
Registered Member #396
Joined: Wed Apr 19 2006, 12:55AM
Location: Pittsburgh, PA
Posts: 176
I've got two Ionic Breeze brand air purifiers here if you want them. They don't work but they have a flyback style MOSFET driven HV producing circuit that shouldn't be too hard to fix. $30 (mainly for shipping) takes them both.
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
It has been hissing a day and night now, and I didn't notice any problems at all. Even when I move my head ~10cm away from the electrode, I can't smell any ozone. So i guess its OK?
Edit: I just noticed I actually CAN smell something when moving my head close, and it does not smell like ozone but more likely a fresh air, almost like some kind of perfume . So I GUESS it is doing what it should
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
Uzzors wrote ...
Probably, if you can't smell ozone even when up close you should be alright. Does your room smell any better?
I'm not really sure, but I think my hay-fewer (is this the right word for "summer grass allergy?") has improved slightly, though I would like to eliminate any placebo effects
This site is powered by e107, which is released under the GNU GPL License. All work on this site, except where otherwise noted, is licensed under a Creative Commons Attribution-ShareAlike 2.5 License. By submitting any information to this site, you agree that anything submitted will be so licensed. Please read our Disclaimer and Policies page for information on your rights and responsibilities regarding this site.