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.
Very nice do you know what the operating frequency is?
As measured with a signal generator and scope, I'm currently running the coil at just around 106kHz. :) The unloaded secondary Freq0 is about 122kHz, but streamer loading brings the freq0 down and it seems to do very well.
EasternVoltageResearch wrote ...
Beautiful performance!!! Have you had any primary strikes?
Thanks! No I haven't had a primary strike. As you can see, the last 'turn' around the primary is a ground strike ring, which it has hit. The brown circle on top of the primary is an acrylic primary cover (haven't taken off the protective paper yet) which should help reduce dust build up and provide a small amount of insulation.
I finally wired up my coil and plugged it running 208VAC. Here's the results at 100us on-time, just barely turning open the taps and really running out of space to test it. It's hardly running anywhere near full power. Roughly 200bps, 500Apk.
In case you were following, I hought I would give a update on some tweaks I made just recently to my old DRSSTC 2 after it got moved over from one side of the US to the other side. Surprisingly, it didn't fall apart in USPS mail!
I re-did the wiring and upgraded the drive circuitry to my UD2.7 as well as made a new toroid for it.
Everything still fits in the 1' x 1' square box and I think I even managed to carve out some extra space! I was also invited for a demo at a nearby science fair just as a side show, and the coil worked very reliably over the course of an entire day, playing music and lighting up fluorotubes.
.. from the Nutcracker, just in time for the holiday season.
As always, lots more construction details and photographs on my updated project page here:
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.
First Brick Coil - CM200 Half-bridge
do you know what the operating frequency is?
