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 #56785
Joined: Fri Aug 28 2015, 02:54PM
Location:
Posts: 20
Hey guys I found a nice DC flyback yesterday from a computer monitor. I powered it up using a 2n3055 circuit because it was all i had. Now i get a really nice and steady 3 cm arc. However the pins on the bottom keep arcing to each other which is a big problem. I know it keeps arcing between de flyback primary winding and between the ground and the capacitor. I read on the internet that if you hot glue or insulate it the flyback could start arcing on the inside. Could i just ground the capactor and internal primary pins using my mains ground? Anybody got an idea?
Registered Member #54278
Joined: Sat Jan 17 2015, 04:42AM
Location: Amite, La.
Posts: 367
I would hot glue 'em. Maybe even cut off at the quick the pins I don't use before gluing. BUT, I'm no expert, if after this is done, and some transformer starting arcing internally then, IMHO, it's either defective or overdriven, ...maybe at a resonant spot...?
Registered Member #834
Joined: Tue Jun 12 2007, 10:57PM
Location: Brazil
Posts: 644
If you ground the capacitor, instead of arcs you get powerful sparks. Normally the ground of the secondary coil shall be connected to the ground of the driving circuit, and it's always a good idea to connect the grounds to the mains ground. To insulate the capacitor, hot glue shall work, and is easy to remove it later if you want to use the capacitor.
I have tried the paraffin method. Works well for a while, then the arcs return. I guess the paraffin is eroded by the corona. Only method that has worked for me is to immerse the flyback in oil. Messy but effective.
Registered Member #2899
Joined: Wed Jun 02 2010, 06:31PM
Location: Deinze, Belgium
Posts: 254
kimbomba wrote ...
Patric wrote ...
I do pour hot paraffin on it. Works very well!
I have tried the paraffin method. Works well for a while, then the arcs return. I guess the paraffin is eroded by the corona. Only method that has worked for me is to immerse the flyback in oil. Messy but effective.
Never had that. Paraffin wax is an excellent electrical insulator, with a resistivity of between 10^13 and 10^17 ohm metre.
Registered Member #2899
Joined: Wed Jun 02 2010, 06:31PM
Location: Deinze, Belgium
Posts: 254
Patric wrote ...
kimbomba wrote ...
Patric wrote ...
I do pour hot paraffin on it. Works very well!
I have tried the paraffin method. Works well for a while, then the arcs return. I guess the paraffin is eroded by the corona. Only method that has worked for me is to immerse the flyback in oil. Messy but effective.
Never had that. Paraffin wax is an excellent electrical insulator, with a resistivity of between 10^13 and 10^17 ohm metre. I used paraffin for cooking (sticks).
Registered Member #54278
Joined: Sat Jan 17 2015, 04:42AM
Location: Amite, La.
Posts: 367
kimbomba wrote ...
Patric wrote ...
I do pour hot paraffin on it. Works very well!
I have tried the paraffin method. Works well for a while, then the arcs return. I guess the paraffin is eroded by the corona. Only method that has worked for me is to immerse the flyback in oil. Messy but effective.
Are you sure it was pure paraffin? I have come to trust the stuff with use over many years--never failed.
I have tried the paraffin method. Works well for a while, then the arcs return. I guess the paraffin is eroded by the corona. Only method that has worked for me is to immerse the flyback in oil. Messy but effective.
Are you sure it was pure paraffin? I have come to trust the stuff with use over many years--never failed.
Well I am not sure if it was pure paraffin. I used the stuff from a candle I got at walmart.
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.
Flyback pins arcing...
Could try that actually.... does it insulate well? Parrafine is candle wax right?
