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 #2922
Joined: Sun Jun 13 2010, 12:08AM
Location:
Posts: 226
What is a max safe or "normal" temperature of the heatsink? i'm afraid to run my coil more than 30 seconds... i'm using the igbts irg4pc50ud with 30v at the gates.
what is the maximum heatsink temperature in yours coils?
Registered Member #3490
Joined: Wed Dec 08 2010, 11:55PM
Location: The Granite State
Posts: 34
What is a max safe or "normal" temperature of the heatsink? Keep it under 660 degrees celsius and the heatsink will survive(cant say much for the IGBTs though).;-)
Registered Member #2922
Joined: Sun Jun 13 2010, 12:08AM
Location:
Posts: 226
thanks TheBoozer, i was afraid with 86ºF hehehehe, but i'm using a TO-247AC package igbt that isn't good for keep cool.. but i am thinking that this can survive at 135F. My fans are ON all the time.
Registered Member #1875
Joined: Sun Dec 21 2008, 06:36PM
Location:
Posts: 635
According to the datasheet for your IGBT, the maximum temperature is 150 degrees F, so 135 is cutting it dangerously close. Performance decreases as the temperature rises so it's best to keep it at a manageable temperature.
My personal rule of thumb is "if it's too hot to touch I need to fix something."
Registered Member #2292
Joined: Fri Aug 14 2009, 05:33PM
Location: The Wild West AKA Arizona
Posts: 795
ScotchTapeLord wrote ...
According to the datasheet for your IGBT, the maximum temperature is 150 degrees F, so 135 is cutting it dangerously close. Performance decreases as the temperature rises so it's best to keep it at a manageable temperature.
My personal rule of thumb is "if it's too hot to touch I need to fix something."
I generally agree with this as well, if your heat sink is to hot to touch then you need to fix something (probably bigger IGBTs )
Registered Member #2922
Joined: Sun Jun 13 2010, 12:08AM
Location:
Posts: 226
i'm afraid to run my drsstc for a long time.. i made tests and in 35 seconds my heatsink heated 4ºC.. but in other tunes points (deferents tap position) my heatsing heated more.. like 8ºC, i don't now if is normal..
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.
Safe temperature?
)