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 #902
Joined: Sun Jul 15 2007, 08:17PM
Location: Pacific Northwest USA
Posts: 1042
ok, so I am reviving my Capacitor Bank Project to some degree. I have most major assembly done, but have two things remaining before testing: charging circuit, but this is easy to build for a basic test rig the second thing left is a circuit to drive the CM600 switch for controlling the pulses. I am saving the triggered spark gap for future use, as it requires a higher bank voltage and to get things started I plan to test with just 500V
since the CM600s are practically the white elephant of hobby high voltage electronics, I want to make sure that any needs they have are met.
How should I go about driving these in a non-SSTC environment? I would need to be able to turn on and leave on, and eventually turn off after a delay. For some reason I get the feeling that 12V through the gate via a second transistor will not perform well lol
Registered Member #1875
Joined: Sun Dec 21 2008, 06:36PM
Location:
Posts: 635
? I would think just using a CM600 as a switch for discharging a capacitor would be easier than using it in a SSTC.
I don't see why you couldn't get away with a 555 in monostable with properly chosen timing components along with a gate driver. For just one pulse, as opposed to tens of thousands of pulses per second, I would imagine a UCC37322/27322 would work just fine, even on a CM600. If you want to go bigger or use a higher gate voltage then just use some fast BJTs or FETs in push-pull configuration.
I would think it would be easier than with a SSTC, because without all the noise, you don't have to concern yourself with putting a negative voltage on the gate, just an ON voltage and 0.
The only other thing I can think of is maybe something to monitor the current through the system... but I think you should be okay with such a hefty brick.
Registered Member #902
Joined: Sun Jul 15 2007, 08:17PM
Location: Pacific Northwest USA
Posts: 1042
ScotchTapeLord wrote ...
? I would think just using a CM600 as a switch for discharging a capacitor would be easier than using it in a SSTC.
I don't see why you couldn't get away with a 555 in monostable with properly chosen timing components along with a gate driver. For just one pulse, as opposed to tens of thousands of pulses per second, I would imagine a UCC37322/27322 would work just fine, even on a CM600. If you want to go bigger or use a higher gate voltage then just use some fast BJTs or FETs in push-pull configuration.
I would think it would be easier than with a SSTC, because without all the noise, you don't have to concern yourself with putting a negative voltage on the gate, just an ON voltage and 0.
The only other thing I can think of is maybe something to monitor the current through the system... but I think you should be okay with such a hefty brick.
I'll give that a try, I thought the bricks needed something special. I've never used a brick before. I also wanted to eventually build an SSTC out of the two I have, assuming I didn't fry them. I guess I can start out with a basic driver and see how it works.
Registered Member #639
Joined: Wed Apr 11 2007, 09:09PM
Location: The Netherlands, Herkenbosch
Posts: 512
Just make sure you saturate them. But why do you want to use IGBT's and what energy / load are we talking about. I have a feeling that there are far more suitable switching devices for your application. The chances of destroying your brick are quite high whilst switching an inductive load.
Registered Member #902
Joined: Sun Jul 15 2007, 08:17PM
Location: Pacific Northwest USA
Posts: 1042
Dalus wrote ...
Just make sure you saturate them. But why do you want to use IGBT's and what energy / load are we talking about. I have a feeling that there are far more suitable switching devices for your application. The chances of destroying your brick are quite high whilst switching an inductive load.
I have a total of 4.2 kJ at the moment, but will likely not be using that much for a single pulse. I want to use an IGBT so that I can control the pulse length, and eventually have more efficient and well timed multi-stage devices. Also, I thought about using these IGBTs in an Arc Welder Controller (one of the reasons these things are manufactured) as a type of Photographic Flash for certain purposes.
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.
driving CM600s
