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 #809
Joined: Wed May 30 2007, 08:59AM
Location: Melbourne, victoria
Posts: 114
hi all, since i have got my flyback working, i was wanting to make a tesla coil with it. i have seen some vids on youtube of them, with impressive results. i have wound a secondary that is on pvc pipe and it's diameter is 50mm and it is 160mm tall. i have about 10 10kv 100pf ceramic caps. does this sound like a workable tesla coil?
Registered Member #809
Joined: Wed May 30 2007, 08:59AM
Location: Melbourne, victoria
Posts: 114
ah, i see, you used a syringe for the secondary. maybe if you made a bigger secondary you would get better results? anyone thing my secondary, capacitors and flyback ideas work?
I built a small SG Tesla coil powered by a zvs fly back and got 6" arcs for caps take the HV caps from 10 computer monitors and make a mmc for around 10KV and .02uf or some bottle caps for the secondary use 1" by 5" and primary cu wire here is mine it takes some tunning though and you do want a saifty gap with a powerful fan.
Registered Member #973
Joined: Tue Aug 28 2007, 07:32PM
Location: Pittsburgh, PA
Posts: 66
Hi all. i am new to this site and this is my first post. Anyway...
I have built 2 sgtc's so far and they both use a flyback hv source. Im surprised on how well my second one performs. it uses a 6" sec (1-1/8"dia) and an 8 turn tapped flat spiral primary. I use a small ~2" dia "doorknob" for the toroid. With no target ground, it will produce some very nice 5" streamers. When there is a target i get about 7-8" arcs that get kind of hot. It uses an adjustable rotary SG with 4x 590pF 30kV caps. the flyback driver is a half bridge circuit found here http://www.scopeboy.com/tesla/flyback.html (555 driven one 2nd from bottom. Input power during a run is about 280watts. The only advantage i have is that i have a huge flyback xformer, but with the halfbridge i got almost the same results with a 'normal', smaller flyback.
http://www.youtube.com/watch?v=xUpGH7kSeFs < check it. i have since replaced this secondary with one of equal size, but thinner wire (and no breaks ) and have gotten longer streamers than in the video.
i think it all depends on how your driving your flyback. I've been through 3 different drivers and this Hbridge seems to work the best. i want to see someone use a ZVS driver like you see on youtube with those fat arcs to drive a coil. that would be nice.
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.
Flyback tesla coil
) and have gotten longer streamers than in the video. 
