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 #162
Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3140
Just an obvious warning ..... assuming that the multiplier is fed from ac line;
USA 110/120 Vac is half of UK (240Vac), Europe (220Vac) etc. so the multiplier capacitors and diodes should be >= 800 V pk rated and the Marx Generator dc input will be twice expected unless the number of multiplier stages is reduced/halved.
You could either make two pcb versions using higher voltage rated devices OR re-do the pcb to allow 2x(>=400V) diodes in series and 2x (>=350V) capacitors in series as an option.
Less critical is the line frequency, giving better output on 60 Hz then 50 Hz
I like the spark gap holes. A good area for experimentation is the spark gaps; material/pointiness/optical alignment etc. maybe a project for receivers of the sample kit ?
Unfortunately my 'scope probe only goes to 40kV and I haven't a present need for a Marx generator or I'd volunteer.
Also, a small warning ... warn users of potential x-ray and/or u.v. hazard as well as noise/fire/electric shock/etc.
ALSO: you should consider some on-pcb resistance at the multiplier output as well as the Mark generator input because I made a 15-stage (30x 1N4007 & 10n 1kV cer.) multiplier from an ionizer kit and blew it up by bypassing the on-board series output resistors !
Registered Member #3900
Joined: Thu May 19 2011, 08:28PM
Location:
Posts: 600
Very cool! they might work well for dielectric analysis as well on a small scale. I like how they're mounted right on the pcb, I hope they don't start breaking down. If any are still available, I live in Massachusetts and would definitely like to beta test one.
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
Thank you everyone for the interest in these kits. I will be contacting you via PM to get your addresses so i can ship out the kits to you. Thanks again!
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.
Marx Generator Kits - FREE Kits for Evaluation!
