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 #141
Joined: Sat Feb 11 2006, 01:14PM
Location: Southern California
Posts: 96
You have two different colored wires labeled as S1/G1. One wire goes between S1/G1 and the other secondary winding goes from S2 to G2. You can also double check that the primary winding is paralleled (instead of two separate primaries) by checking for continuity between primary gate and gate return.
Registered Member #229
Joined: Tue Feb 21 2006, 07:33PM
Location: Romania
Posts: 506
It's very simple. I used 10 twisted insulated wires to wind 12-16 turns on the ferite core. Making all the windings together helps a lot identifying the phases. Check each winding for the continuity, mark it, then put two in series for each IGBT to get the 1:2 coeficient. i used two paralleled primaries for more current too.
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
Just a note on that black secondary. Do you know what kind of material that is? Usually dark plastic (if its not type i PVC) is usually somewhat conductive which is bad.
Before you wind your secondary, i'd be sure you know what material is being used.
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
Austin wrote ...
other than miss labeling the blue and white wire (S1/G1) does it look correctly wound?
Its hard to tell from the photo, but just use common sense. If the winding looks like the one i made an image of, then its correct. Just be careful when you hook it up to ensure proper phasing is in order.
Registered Member #1169
Joined: Wed Dec 12 2007, 09:16AM
Location: Portland OR
Posts: 251
EastVoltResearch wrote ...
Just a note on that black secondary. Do you know what kind of material that is? Usually dark plastic (if its not type i PVC) is usually somewhat conductive which is bad.
Before you wind your secondary, i'd be sure you know what material is being used.
I'm pretty sure its Type 1 Pvc I bought it next to the "white" PVC in the plumbing department at Home Depot.
Registered Member #1169
Joined: Wed Dec 12 2007, 09:16AM
Location: Portland OR
Posts: 251
Bennem wrote ...
Yeah....phasing is important, you don't want both igbts on at the same time.
I am like 90% sure the phasing and the primary winding are all correct now. But then again I guess one can never be too sure until he looks at it under an oscilloscope. Wirenut and I had an extensive discussion on this last night just to be absolutely sure. All that remains to this project is finishing the secondary and Advanced Modulator. I am waiting on parts so I will keep you guys update when I have made some more progress.
Until then I might be MIA for while, finals and term projects are coming up so the next two weeks I will be extremely busy.
Registered Member #1157
Joined: Thu Dec 06 2007, 12:11PM
Location: Houston, TX
Posts: 307
EastVoltResearch wrote ...
Regarding toroids, Science First of NY also sells toroids. I believe they have an 8x2 and a 12x3 which are pretty inexpensive. They don't list them in their catalog, but if you call them, they will place the order for you.
Hello Mike,
I am sorry, but we no longer manufacture toroids. They were just not popular enough to sustain production. Good luck in your hunt.
Thank you, Joe Welsh
Customer Service Team Science First 95 Botsford Place Buffalo, NY 14216 T: (716) 874-0133 F: (716) 874-9853 Email: **link**
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.
Minibrute Construction Thread / FAQs
