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 #1107
Joined: Thu Nov 08 2007, 10:09PM
Location:
Posts: 792
Hi all, today i started working on another mini drsstc that is powered by a voltage doubler and a half bridge of isotop 40n60's. It is in the early design stage and i don't have a secondary yet but i am aiming for something in the 350khz~ range. Today i made the bridge from double sided copper clad with the + rail on the bottom and - rail on top. The mmc will be 6-8 cde caps depending on what kind of primary design i go with. For the driver i am using Steve Ward's new drsstc driver. Here are some pics of the bridge. I would also like to say thanks to Chris Hooper for supplying me with the igbt's and primary caps and gdt toroid.
Registered Member #154
Joined: Sun Feb 12 2006, 04:28PM
Location: Westmidlands, UK
Posts: 260
Looking good!
its very similar to Steve Wards small DRSSTC bridge which is still performing very well with excellent spark outut for such a small coil. I too made such a small coil a couple of years ago, first using 2mm enamelled copper wire wound helically as my primary, but soon found it to get hot, so changed it to 4mm copper pipe instead....my primary cap was 50nf 6 kv.
Registered Member #1107
Joined: Thu Nov 08 2007, 10:09PM
Location:
Posts: 792
Thanks for the kind words guys. I needed a couple parts so when i get them i will finish the bridge and start working on the enclosure and secondary. More pics coming early next week.
Registered Member #1107
Joined: Thu Nov 08 2007, 10:09PM
Location:
Posts: 792
hey, it's been a while but i have more updates. I wound the secondary and epoxyed it and finished the bridge. Right now im going to start building the driver board but in the meantime here is a nice pic for ya all
Registered Member #1618
Joined: Sun Aug 03 2008, 09:38PM
Location: Brooklin, Ontario, Canada, North America, Planet Earth, Solar System, Milkyway galaxy, Universe...
Posts: 5
Nice winding job, I'm impressed with the amount of effort and detail you put into all your work.
Registered Member #1107
Joined: Thu Nov 08 2007, 10:09PM
Location:
Posts: 792
Hey guys, been a while but it works.......kinda i tested everything out today with a dummy coil running at about 240khz and ran it at 150v across the bus for about 15 minutes with the igbt's barely getting over room temperature. I am still having some issues with a ton of noise showing up on the gates but other then that it works great. Hopefully soon i will get the primary made so i can mount the secondary and have some arcs. Here are some pics: setup (before i added the mmc and dummy coil):
GDT waveform: Primary waveform: measured from a test ct about 200A P-P with about 75us "ON" time.
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.
mini drsstc build
