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 #3075
Joined: Fri Aug 06 2010, 02:44PM
Location: Athens, GA
Posts: 148
Got my FBT circuit working tonight!
I can draw 1/2" sparks with my home-made 12V input (converted a PC PSU) and the powerlabs circuit. It's not much, but it's a start...and my son thinks it's the coolest thing he's ever seen (even though I made him sit 10 feet away).
Next step is to wind the primary (used the built-in, since I only had really small mag wire on hand for the feedback), and make the connections properly (alligator clipped together at the moment, just to see if I could get it working), but right now I am just happy it sparks at all
Registered Member #58
Joined: Thu Feb 09 2006, 05:40AM
Location: Tri-Cities, Washington, US
Posts: 317
Great work! Its from this moment that you will now work towards bigger and brighter arcs until the inevitable breakdown of the entire earths atmosphere... err well, I guess maybe thats going a little overboard :) Keep it up!
Registered Member #2893
Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
Nice. With one cm sparks on pointed electrodes, it's likely that is 6000V. Other than winding your own secondary and upping the voltage, there is not much else you can do with that driver.
FTR, computer PSU's can be put in series for more volts.
Registered Member #3075
Joined: Fri Aug 06 2010, 02:44PM
Location: Athens, GA
Posts: 148
I'm chalking this one up to a win for sure...
I did try experimenting tonight with the feedback coil (more turns, less turns, thicker wire) and even tried winding my own primary. All worked, but not as well as the built in primary and three turns of magnet wire (about 28 AWG I think) with the leads x'd over each other for the feedback.
I think I may try to build a zvs, and use that for a Jacob's ladder. Will likely look at 2 PSU's in series then (for around 24V @ 18 amps I think?).
Regardless, I am pretty happy with this for a first result
Registered Member #2838
Joined: Fri Apr 30 2010, 07:55PM
Location: tehachapi, CA
Posts: 333
Good work dude. You will be building tesla coils before you know it. Before you rewind the primary you could run the output through a hv capacitor and get slightly better arcs. I had a small 6000v output like yours. Ran it through a 1000pf 30kv cap and it nearly doubled the arc length. It was also much louder and brighter. Just don't recommend electrolytic caps unless you want to see them go boom!
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.
Sparks...we have sparks!!!
