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
zvs driver? i don't know if this is possible, zvs flyback driver is auto-tuned to the primary ressonance frequency and for a SSTC you need the primary running at the secondary frequency.
sstc need to be small because the low power level in the primary that isn't tuned.
Registered Member #3093
Joined: Mon Aug 09 2010, 11:40PM
Location:
Posts: 68
Well, you can excite a tesla resonator off a zvs driver, but you would have to tune the primary side tho the frez of the secondary. If the circuit is killing fet's, test it out on a flyback to see if it is functional.
Registered Member #1316
Joined: Thu Feb 14 2008, 03:35AM
Location: Cambridge, MA
Posts: 365
If you remove the primary tank cap and use tight coupling between the primary and the secondary you should be able to get the driver to run at the frequency of the secondary. (I have done it before) It is prone to falling out of oscillation though when you draw a arc.
I would recommend putting a big one ohm or so resistor in line with the supply to limit the current for when it falls out of oscillation and one of the transistors shorts out the supply.
Registered Member #1875
Joined: Sun Dec 21 2008, 06:36PM
Location:
Posts: 635
The actual transformer part of sstcs are smaller than those of sgtcs because solid state switches cannot handle the amount of power that spark gaps can. The large size isn't used because it can't be utilized fully with silicon... unless you make a DRSSTC with some kind of IGBT bank... The coil driver of the sstc is smaller because you don't need an iron core transformer for the full wattage of the coil like in sgtc... but that's obvious.
The ZVS I think was originally made for driving SSTCs but I don't see the advantages over a half-bridge.
ZVS is limited in terms of wattage from what I understand, unlike class-D stuff. Not to mention, until I figure out how exactly the heck it works, I claim that ZVS runs off voodoo principles.
With secondary feedback, you can make a half-bridge using about the same component count as the ZVS. But if you insist on ZVS, try adding more windings and perhaps getting a larger inductor core. It probably saturated due to the lower impedance nature of the primary and made the voodoo backfire.
Registered Member #2922
Joined: Sun Jun 13 2010, 12:08AM
Location:
Posts: 226
Weston can be right. If you use a high coupling the two ressonant circuits can ressonate at another frequency equal to the primary frequency (this is rare) and the zcs can read the voltages picks of the secondary and tune the circuit
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.
First SSTC
