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 #2310
Joined: Wed Aug 19 2009, 08:04PM
Location: Santa Catarina - Brazil
Posts: 169
Hello guys!
I'm currently running the Uzzors Induction Heater:
Mine runs at 70Khz and draws 7A @ 200v from mains. (Now I'm using IRFP460N half-bridge with some DSEK 60-06A 35ns diodes bypassing the slow internal diodes). And using a IR2184 to drive a half-bridge of IRF540N that then drives a GDT (Little different from the famous UCCs, but was what I got in hands now, and works pretty well)
I dont't really know the relationship between the current being drawn from mains and the inverter output current (That is what matters).
Now I'm getting around 1600w With this setup without problems, my waveforms are pretty good (will post some photos later). But I think that I'm near on the limits of that switches (At least they don't get even warm with 10mins of run)
I got some IRGP4650DPBF
Are them good? 120ns is the trr of internal diode... is there necessity for bypassing them? How much power do you guys believe that I can get with them?
Registered Member #4992
Joined: Wed May 23 2012, 03:57PM
Location:
Posts: 108
I think they should work pretty good. I used my irfp 460 at 400v to 18amp. I can even melt metal with them,So I think you should do pretty good with the bigger switches.
Registered Member #2310
Joined: Wed Aug 19 2009, 08:04PM
Location: Santa Catarina - Brazil
Posts: 169
18A on the DC (Supply) or being measured on the output of the half bridge with a current probe?
Right now, I'm measuring the current running at 110v DC with a small load on the workcoil and the numbers are:
6,34A on supply and "30A" on the half-bridge output (Measuring it with a small ferrite with 47 turns with a 47ohm burden, so If I'm right, this shows 1v for each 1A on the output) this "30A" is being measured peak-to-peak on the scope.. Is it right?
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.
IGBT's for new Induction Heater (Help needed with current rating)
