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 #989
Joined: Sat Sept 08 2007, 02:15AM
Location: São Paulo, Brazil
Posts: 476
Hi all, its been a long time that I didnt post any project here, but now I am back with a new project.
Its a common ZVS as most people here built, but I made it as SMD board with two SMD mosfets and make it most compact as possible. The build its not so beautiful but it works very good. I used two STD20NF20 TO-263 mosfets (200V 20A), two MUR860 diodes, Siemens 1uF 250V Polyester Cap, and a few other components that use on ZVS Driver.
Here are a few pics:
And a video, of it working in three different voltage levels: 12V, 24V, 36V from Battery.
Registered Member #1225
Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253
The video is definitely cool, but the pics are not working. They do not show on the forum, and they will not load when clicked on.
Also, i would *highly* suggest you use a long chicken stick. You have corona on your hand even though it is dc! With a normal sized LOPT such as yours, and that much power, your diodes could fail short, and you would have AC output. That would eat through the insulation very fast, and you would get a very painful and unforgiving shock at least.
On the other hand, you could break a plastic coat hanger and tape the wire to the end with some tape you find stuck to your foot or on the floor even, and you would be almost completely safe.
Be safe man, do not want to lose a valued member...
Registered Member #540
Joined: Mon Feb 19 2007, 07:49PM
Location: MIT
Posts: 969
Very nice driver and arcs.:-) I have seen that sort of flyback with the green dot on it before... where did you get it? Also that large inductor wound with litz wire is the filter one going to the center tap of the flyback right?
Registered Member #989
Joined: Sat Sept 08 2007, 02:15AM
Location: São Paulo, Brazil
Posts: 476
The video is definitely cool, but the pics are not working. They do not show on the forum, and they will not load when clicked on.
Also, i would *highly* suggest you use a long chicken stick. You have corona on your hand even though it is dc! With a normal sized LOPT such as yours, and that much power, your diodes could fail short, and you would have AC output. That would eat through the insulation very fast, and you would get a very painful and unforgiving shock at least.
On the other hand, you could break a plastic coat hanger and tape the wire to the end with some tape you find stuck to your foot or on the floor even, and you would be almost completely safe.
Be safe man, do not want to lose a valued member...
The pics wasnt working because my server was offline =P Now its all ok. Yeah normally I use my 50kV cables and a pair of insulation sticks on the wire, but that was for a short time, so I didnt think to use something like that.
neat circuit. if its any help you can obtain some nice mosfets from old laptop SMPSs and backlight inverter boards..
Hmm, I will try to dissassemble a old laptop smps here and see what I can obtain from it, but mosts uses Ultrafast BJT instead mosfets =/
Very nice driver and arcs.:-) I have seen that sort of flyback with the green dot on it before... where did you get it? Also that large inductor wound with litz wire is the filter one going to the center tap of the flyback right?
I Got it from an old 29'' RCA TV that wasnt working anymore. the output is low at voltage if you compare as small flybacks (I get that 36V output from 15V with a small one) but it didnt get any heat after some time running, and I think it can handle more power (I exploded a small one trying to run a SGTC, it worked, but not for much time: ) Yes the inductor is not to large hehe, the core is white-yellow from computer SMPS, but its on the center tap of the flyback to +V Supply.
Registered Member #989
Joined: Sat Sept 08 2007, 02:15AM
Location: São Paulo, Brazil
Posts: 476
I was with the board layout, but since I formated my computer, I dont have anymore (forgot to save proteus files) But the board its only a "heatsink" and connection to the mosfets. its two blocks of cooper and two vias to solder the mosfets. The other things its all put togeter by wires...
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.
MiniZVS with SMD Mosfets
