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 #55
Joined: Thu Feb 09 2006, 04:56AM
Location:
Posts: 149
I have been tweaking my mini DRSSTC (got a nice spun topload for it) and have run into some problems. I swaped out the 30N60A4D IGBTS with some 40N60A4 IGBTs. While I was tuning, the coil just stopped working. It didnt blow the 15A fuse feeding the bridge rails, and upon further inspection I blew only one IGBT. How could I only blow one? Something is fishy here. I never had a problem with the 30N60s and now this has happended twice. Any ideas?
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
wrote ...
While I was tuning, the coil just stopped working. It didnt blow the 15A fuse feeding the bridge rails, and upon further inspection I blew only one IGBT. How could I only blow one? Something is fishy here. I never had a problem with the 30N60s and now this has happended twice. Any ideas?
Blowing one IGBT is the one atypical mode of failure. However, be warned, that if you blow one IGBT, the others may test out okay, but still be damaged and weakened.
Typically, if one IGBT fails, i replace all IGBTs within the full-bridge, otherwise you may get a damaged / weakened one that will fail right away again leading others to get damaged / weakened. Its a never ending cycle unless you replace all at the same time.
Also, WHY did you swap the 30N60's for the 40N60's? The 30N60's will work just as well as the 40N60's. We use them both interchangeable with no loss in performance or reliability between the two devices for this application.
Registered Member #55
Joined: Thu Feb 09 2006, 04:56AM
Location:
Posts: 149
Thanks EVR. I think thats what it is. I am going to go through the whole bridge replacing everything. I know the control and gate drive electronics are working fine. I used the 40N60A over the 30N60A becasue thats all I have. What I thought was a big bag 30N60's was really a big bag of 40N60s :-@ I will report back with the results. Will
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.
DRSSTC bug
