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 #4215
Joined: Wed Nov 16 2011, 09:45PM
Location:
Posts: 32
Hi friends...
I have opportunity to buy neon transformer 10kV/ 100mA. (4,88A 230Volts) It is FART transformer dedicated to neon lightening. My questions are:
1) Would you recommend buying this transformer? 2) Does this transformer keep its parameters? I mean does it really give 100mA. 3) If it gives 100mA /10kV why manufacturer writes 422W, shouldn`t be 1000W at least? Also parameters (4,88A 230Volts) suggest power should be above 1kV. 4) What is dedication of 50nF capacitor to neon transformer? protective? lowering current?
Registered Member #1321
Joined: Sat Feb 16 2008, 03:22AM
Location:
Posts: 843
Neon Sign Transformers have a built-in ballast; they have a magnetic shunt which acts as an inductive reactance. The 100 ma spec is a short circuit current and the 10 kv spec is an open circuit voltage. Depending on the load, you'll get something in between.
Registered Member #4215
Joined: Wed Nov 16 2011, 09:45PM
Location:
Posts: 32
Neon Sign Transformers have a built-in ballast; they have a magnetic shunt which acts as an inductive reactance. The 100 ma spec is a short circuit current and the 10 kv spec is an open circuit voltage. Depending on the load, you'll get something in between.
Ok I understand but if you had to choose between Oil Burner Ignition Transformers (let say parallel connected) and high voltage neon transformer what would you choose? I am interested in charging capacitors and then discharge them. Sort of tesla coil application... Neon transformer weights 17kg.
Registered Member #1321
Joined: Sat Feb 16 2008, 03:22AM
Location:
Posts: 843
I'd have to have more information about the intended use before I could recommend anything. If it's just for foolin' around, I'd say go for whatever's the best deal.
Registered Member #4215
Joined: Wed Nov 16 2011, 09:45PM
Location:
Posts: 32
I would like to charge capacitor (16kV 0.05uF) and then discharge it with the frequency of about 250Hz. In each cycle of discharge capacitor will be fully discharged... Basing on the above which option would be best for me... (It is really hard to get reliable source of high voltage on market). I will add I want to fully charge capacitor to 10kV. Accumulation of Charge can be less than allows capacitor but I would like to achieve full voltage potential available from the transformer.
Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
10kV open circuit, 100mA short circuit. So maximum power output is at something like 5kV, 50mA.
Excellent for powering a Tesla coil. The figure above is for a resistive load: a capacitive load partly cancels the ballast inductance and gives more power than you expect.
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.
High voltage neon transformer Fart opinion needed...
