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
Ultra7 wrote ...
I think what you probably need is our "Single Transistor Flyback" Circuit.
I think what he needs is a "zvs flyback driver". This driver should really take place of the STFD, as it uses just a few more components, MOSFETs are cheap nowadays and the performance difference is just huge.
Registered Member #1946
Joined: Sat Jan 31 2009, 11:37AM
Location: India
Posts: 43
Ultra7 wrote ...
I think what you probably need is our "Single Transistor Flyback" Circuit. Hmm. . . the HvWiki is still down? Well here is a link to what I'm talking about.
Then once you have that one built, you can do a "Plasma Tweeter" audio modulated Flyback. This would probably earn you the quick and easy "Passing grade" until you can find a nice NST.
A Tesla coil is not the easiest "Project" to do in a crunch. See, the issue with a Tesla Coil is not just the NST, it's everything else you need that makes it a challenging project. If you are still set on making one, then this is the right place to have come, though.
Dr. Kilovolt wrote ...
Ultra7 wrote ...
I think what you probably need is our "Single Transistor Flyback" Circuit.
I think what he needs is a "zvs flyback driver". This driver should really take place of the STFD, as it uses just a few more components, MOSFETs are cheap nowadays and the performance difference is just huge.
That would have been very nice but I cant change it now, I already told in college that I will be going for tesla coil :( Now I cant change my project else it would give a negative response to teachers :( Not just that I want to really make it I was inspired by the design of Peter Terrain, here you can see
I am just like passionate about making it, now all the time I am awakew I think of what will I do with that part of tesla coil and what with that. lol
Andyman wrote ...
Well, I happen to have a 277 volt primary, 12kv/30ma secondary nst gathering dust in my garage. However, it has GFI protection which is not very ideal for coil use. You might be able to fuss with it and get the circuit out of it, but that's up to you. Also, I live in California, so shipping might be a bit expensive.
That will be great, just have to know abt shipping cost estimate before saying yes :(
Edit:Okay I just called a company, they have a transformer without any protection and exact rating that I needed the only problem is they are not in my state, they are on like 2 day journey away and they dont want to mail it to me, they say come and buy :( I am gonna go through my friends if anyone have a relative in that city. :)
anyone used "TeslaMap5"?? I found this today OMG!! This software is simply amazing, so easy to use and understand, and the calculations are mind blowing ^_^
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
kashish0711 wrote ...
That would have been very nice but I cant change it now, I already told in college that I will be going for tesla coil :( Now I cant change my project else it would give a negative response to teachers :(
I meant you can use the TV transformer to power your Tesla coil. If you get the potted one, just connect it to the tank circuit like normal because it outputs DC.
Registered Member #1946
Joined: Sat Jan 31 2009, 11:37AM
Location: India
Posts: 43
Dr. Kilovolt wrote ...
kashish0711 wrote ...
That would have been very nice but I cant change it now, I already told in college that I will be going for tesla coil :( Now I cant change my project else it would give a negative response to teachers :(
I meant you can use the TV transformer to power your Tesla coil. If you get the potted one, just connect it to the tank circuit like normal because it outputs DC.
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
kashish0711 wrote ...
My dad will kill me if I take that out :(
you need to find a thrown away TV Look by the side of roads, in junkyards or recycling centers. You can also get just the transformer, they are often cheap on ebay etc.
Registered Member #1946
Joined: Sat Jan 31 2009, 11:37AM
Location: India
Posts: 43
Dr. Kilovolt wrote ...
kashish0711 wrote ...
My dad will kill me if I take that out :(
you need to find a thrown away TV Look by the side of roads, in junkyards or recycling centers. You can also get just the transformer, they are often cheap on ebay etc.
Lolz, why didnt that come in my mind.
I will surely go and check that tommorow morning:-D
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.
Cheap Neon Sing or Furnance Ignition transformer????, pls help!!!
Look by the side of roads, in junkyards or recycling centers. You can also get just the transformer, they are often cheap on ebay etc.