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 #138
Joined: Sat Feb 11 2006, 10:23AM
Location:
Posts: 9
Sulaiman wrote ...
TeslaCoilBuilder, That's a scary capacitor bank.
I didn't notice any discharge resistors in the setup.
yes, but the pic is not up to date, I have some discharge resistor on it now
Steve Conner wrote ...
I think those guys got their capacitors surplus, from some huge industrial inverter drive that was scrapped in Germany. I've seen photos of guys dismantling it with cordless drills and stuffing the back of an estate car full of capacitors, but I can't remember where I saw them.
The caps are from the German Railways. Possible you have seen it on the CTC-Labs forum
Registered Member #588
Joined: Sat Mar 17 2007, 11:06AM
Location: UK
Posts: 93
TeslaCoilBuilder wrote ...
The caps are from the German Railways. Possible you have seen it on the CTC-Labs forum
Wow I have never see so many capacitors in my life, that is a truly amazing sight! Were the capacitors heading for the bin? Did you get them for free? I'm curious now...
Ragnarok wrote ...
I am deeply envious.
Hehe, me to, I would chop off my arm for one of them, for 260 of them, well you don't want to know what ill do for that!
Registered Member #659
Joined: Fri Apr 20 2007, 09:14AM
Location: SW Hertfordshire, UK
Posts: 75
Steve Conner wrote ... Hmm, well I haven't had much experience of buying MTB parts on Ebay, but it has been interesting.
Well, my brother is an MTB addict. If his wheels aren't bent yet, they will be by the end of the day. He's constantly trying to buy new parts, and very often, you'll find the seller bidding themselves under another name in order to crank up the cost they get for it.
I myself am not interested in mountain biking for any more than actually getting somewhere or casual riding - the act of hurling onesself off things doesn't appeal to me.
Here's a neat picture. I'm sure a lot of you know exactly how I did it, but it looks nice anyway. There's no photoshopping, glue (or other adhesives), they're not soldered/welded together, nor are there unseen supports round the back.
I also had a very nice picture of a frozen spider's web somewhere, but I can't instantly find it. It was a touch out of focus, but that actually made it work well.
Registered Member #659
Joined: Fri Apr 20 2007, 09:14AM
Location: SW Hertfordshire, UK
Posts: 75
Bingo. There's a neodymium magnet out of a scrapped hard drive under the sheet of paper. Most people don't realise that (modern) 1p coins are magnetic, which makes it an excellent photo for confusing people.
The magnet in question wasn't quite powerful enough to hold the top coin in place as well, so that one IS actually balanced on everything else.
I'm still trying to find the one of the spider web on this computer, but if that fails, I know where I have a copy of it.
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.