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 #40520
Joined: Sat Nov 16 2013, 10:34PM
Location:
Posts: 2
Hey all, I'm pretty new here and wanted to say hi!
Always tinkered through high school; built a Jacob's Ladder and a couple NST powered IEC fusion reactors and had a great time. Now I am in college and finishing up a Tesla coil-will post pics soon. After, I hope to create a power supply that will get me much higher voltage for my fusor with a 70kV 10mA dental XRT I picked up a year or so ago.
I can hardly wait! I've had a couple ideas on how to set up the circuit, but looking for some input. I am going to run the whole setup on a 0-130V 20A variac I've had awhile. For those who are unfamiliar with fusion reactor circuitry, a very high negative biased voltage is put at the center of a vacuum chamber to accelerate ions causing them to collide and fuse.
The NST's I've worked with before, I never had to worry about them pulling too much current. How do I shunt the XRT so that it doesn't immediately blow the breaker and/or my variac fuse??
Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4062
Not trying to rain on your parade and all that but please ensure you have a reliable Geiger counter and dosimeter. Fusors and X-ray generators have a tendency to output low energy hard-to-detect X-rays that can do serious long term harm even though they may not show up on most counters. If you are using a glass bell jar (bad idea) or Pyrex (worse) then the fusor absolutely needs extra shielding.
Just to give you an idea of the dangers, a single vacuum tube placed on a Tesla Coil can put you over the yearly dose limit in less than a minute. The "pretty green glow" is actually glass fluorescing with electron beams.
Otherwise, great project and be sure to post a write-up with pictures!! -A
Registered Member #9252
Joined: Fri Jan 04 2013, 06:27AM
Location: Andromeda
Posts: 253
You can try ballasting. I toaster / Toaster oven / MOT / Light bulb in series with the XRT's primary will do. If you need variable current draw. Then attempt this cheap project I made it and it works wonders.
Registered Member #3414
Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245
t's a while since I read up on fusors, but doesn't current depend on gas feed rate? Can you not control current by controlling the rate of feed of deuterium?
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.
[moved] Fusor Circuit
