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 #3900
Joined: Thu May 19 2011, 08:28PM
Location:
Posts: 600
next step in building my drsstc is getting a good ferrite toroid for gate drive. i have been looking around, and it seems that i want 1000+ al, and a resonable cross sectional area. i still have a few questions though. if my Fres is ~500khz, and a company sells f<500khz and f>500khz what should i go with? and it would fall under signal transformers, corrrect? edit: would it be a power, or a broadband?
I have checked on Fair-rite site and it seems to me that the major characteristics of the core you have selected are quite similar to the Epcos core I chose for my GDT. Among the possible Fair-rite materials, I would choose the same (75), which is rated for broadband transfomers. My Epcos N30 material is also rated for broadband transformers and can be used at up to 5MHz. However I am not an expert and cannot give you a reliable advice.
I am just wondering about the core dimension you are considering: mine is 40mm external diameter and was more than enough to wind one primary and four secondaries with a wire much thicker than the UTP wire (although this last one is more commonly used to wind GDTs, I had some concerns about its capability to safely isolate from 230V mains power ...).
Registered Member #3900
Joined: Thu May 19 2011, 08:28PM
Location:
Posts: 600
i plan to get 3-5 cores(1 large cross section, and a couple smaller ones). i dont realy need a large one, but the larger it is, the fewer turns it requires, so what the heck. as for the smaller ones, this drsstc is small enough that i am using secondary feedback which requires 200 or so turns of magnet wire center tapped.
in short, the size isnt realy an issue to me, just the specs for frequency, al, and core type.
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.
gate drive transformers...
