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 #2838
Joined: Fri Apr 30 2010, 07:55PM
Location: tehachapi, CA
Posts: 333
I was thinking about trying a toroid similar to Finn's on the homepage. The difference is that it will be on a much smaller scale. I will be using it on a SSTC that will eventually become a DRSSTC. the secondary is approximately 4.5x12 with 10" or so of actual windings (1000-1100 turns).
Anyway, I was hoping that everyone could give me the good, the bad, and the ugly on why I should or should not give this a try???
Registered Member #2292
Joined: Fri Aug 14 2009, 05:33PM
Location: The Wild West AKA Arizona
Posts: 795
You know I bet it could be done, the tricky part would be finding a way to bend the small tube into nice rings. If you could do that the rest would be a cake walk.
Registered Member #2292
Joined: Fri Aug 14 2009, 05:33PM
Location: The Wild West AKA Arizona
Posts: 795
Oidium45 wrote ...
How did I know that you would be the one to comment? Bending the rings is the easy part. Welding the inside of the seam will be the tricky part!
Yeah I know I couldn't resist
You know they don't technically have to be connected, it's good to have them connected but you really only need to get the ends very close. Like Arcstarter said I bet the best (and easiest) way would be to make the rings out of copper and solder them up.
Registered Member #3490
Joined: Wed Dec 08 2010, 11:55PM
Location: The Granite State
Posts: 34
Arcstarter is right.Soldering the rings makes life pretty easy.I built mine in a sort of unconventional way using copper cut to length then formed around a piece of scrap pvc .The larger support rings were formed around a tire and the inner support for mounting the mess to the top of the coil was formed around a tire rim (sorry I dont have a picture of it finished but I think you get the point).Skinned it out with small chicken wire.Looks pretty cool but I'll be honest I have yet to try it out.Quick and easy and made from junk on hand.
Registered Member #2838
Joined: Fri Apr 30 2010, 07:55PM
Location: tehachapi, CA
Posts: 333
I have access to a tig so welding aluminum won't be too dificult minus space issues with smaller rings. I am considering copper though because I was thinking that since I am going to use a ring setup it would be cool if I made it look old fashioned (early tesla era-ish). My biggest concern was will there be any negative effects from using the rings verses a traditional toroid???
Registered Member #2292
Joined: Fri Aug 14 2009, 05:33PM
Location: The Wild West AKA Arizona
Posts: 795
From my understanding it is very similar to a traditional toroid with slightly less capacitance. The capacitance is base almost completely on the surface area of the toroid.
Now the rings, if spaced correctly can store the charge regardless of the air space between them (with slightly reduced capacitance). The toroid acts as one of the plates in a capacitor the surrounding air is the dielectric and all other suffuses (floor, wall, ceiling) make up the other plate (connected to ground) this and the seriesed stray capacitance of the secondary make up the C in the secondary LC.
I only have a basic understanding in this so if I'm wrong or some one would like to elaborate please do.
If you feel up to some "light" reading before bead you may want to check this out:
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.
Toroid rings for a small coil
