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 #2899
Joined: Wed Jun 02 2010, 06:31PM
Location: Deinze, Belgium
Posts: 255
I have racing arcs along the secondary and flashovers between the primary and the secondary. I removed one turn from the primary because I thought it was the wrong frequency, and I did put a tube filled with paraffin around the secondary, but it did not help much. What can I do next? Please help!
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
I agree. Too much coupling for a SGTC. Try changing your primary to a pancake style primary. You can use just regular 12 AWG wire to get the number of turns and tuning and then replacing with some thicker conductor once all the tuning is done.
Registered Member #195
Joined: Fri Feb 17 2006, 08:27PM
Location: Berkeley, ca.
Posts: 1111
what kind of capacitor are you using? make your primary about 6" with 8 turns with #8 or small refrigerator tubing or wire. a pancake winding might be easier to make.
Registered Member #2899
Joined: Wed Jun 02 2010, 06:31PM
Location: Deinze, Belgium
Posts: 255
I use 25 foil caps from 100 nF 1500V in series. The primary is now 5 turns copperwire 1.5 mm plastic isolated. Trafo is 10 kV 20 mA. I get strikes from about 5 inch and more! Very happy!
Registered Member #9020
Joined: Wed Dec 26 2012, 12:11AM
Location:
Posts: 4
I like the look of your tank circuit.
I typically maintain at least one inch clearance between the innermost primary turn and the secondary. I also extensively model with JavaTC before even spending a single cent. JavaTC conveniently suggests a minimal separation. Your favorite modelling program probably does the same.
Air, though it does break down, does not track. Adding the wax may increase the risk of tracking.
Registered Member #2899
Joined: Wed Jun 02 2010, 06:31PM
Location: Deinze, Belgium
Posts: 255
Katya wrote ...
I like the look of your tank circuit.
I typically maintain at least one inch clearance between the innermost primary turn and the secondary. I also extensively model with JavaTC before even spending a single cent. JavaTC conveniently suggests a minimal separation. Your favorite modelling program probably does the same.
Air, though it does break down, does not track. Adding the wax may increase the risk of tracking.
Thank you! I use teslascript/teslaform. I use very often wax, because it is such a good isolator, it can be removed, and it gave strength to the construction. Since I retuned the coil and lowered the primary, I had no down-streamers any more.
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.
Ordinary little tesla coil problem
