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 #95
Joined: Thu Feb 09 2006, 04:57PM
Location: Norway
Posts: 1308
I spent all of today building a plexiglas box for the coil, only to test the coil and find that it won't break out anymore! I have no idea what's wrong with it, and troubleshooting all afternoon has only given me a dead IRF630. The supply voltage to the 4046 has changed, so hopefully it's just a major tuning issue...
Registered Member #95
Joined: Thu Feb 09 2006, 04:57PM
Location: Norway
Posts: 1308
Done!
I swapped the '630 for a 'P450, and changed capacitor values and CT phasing numerous times to get it tuned again. It seems to be working well finally, so I think it can be shelved once and for all. The plexiglas work doesn't compare to Christopher's magic, but being the first time I've used the stuff I'm satisfied. It can run from 35- 50V, so if I ever feel for it I can make an external power supply. I gave up on the previous PSU project weeks ago.
Registered Member #56
Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
That coil looks awesome!
heh, making plexiglass look nice is way harder than it looks. For my coil I ended up build the base of the coil out of some hardwood and using plexi just for a clear top so you can see what is inside
Registered Member #952
Joined: Mon Aug 13 2007, 11:07AM
Location: Finland
Posts: 388
Your coil looks so sweet that I'm gonna clone it (well, almost.) About the class-E, is the resonant cap size same that it would be in a SGTC? Or is this completely different stuff?
Registered Member #95
Joined: Thu Feb 09 2006, 04:57PM
Location: Norway
Posts: 1308
Thanks. I never measured the spark length but it looks to be about half the coil's length, so 4 cm.
Spark; It's hard to determine the capacitor size before experimenting, so just buy a bunch of smaller caps with a sum of about 3nF. 220pF increments are good for adjusting. I used 660pF with an IRFP450 and 2nF with a '630. It will ultimately depend on frequency, primary inductance and peak voltage though. Polyester caps should do fine.
Registered Member #952
Joined: Mon Aug 13 2007, 11:07AM
Location: Finland
Posts: 388
Ok. I'll try to get it tuned right.
So, it's gonna be kinda small and I want the power supply to be small. I thought about those laptop computer battery chargers... They can put out some 20V@3A, and they are quite small. I just have to think where I can get one.
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.
Small Class E PLL Coil
I have no idea what's wrong with it, and troubleshooting all afternoon has only given me a dead IRF630. The supply voltage to the 4046 has changed, so hopefully it's just a major tuning issue...
. What is the maximum spark lenght that you could pull from it ?