Welcome
Username or Email:

Password:


Missing Code




[ ]
[ ]
Online
  • Guests: 39
  • Members: 0
  • Newest Member: omjtest
  • Most ever online: 441
    Guests: 441, Members: 0 on 01 Oct : 16:32
Members Birthdays:
One birthday today, congrats!
Carl A. Willis (45)


Next birthdays
10/03 TwirlyWhirly555 (33)
10/04 Michael W. (36)
10/05 GhostlyFigures (36)
Contact
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.
Search 4hv.org
Search For:    Enhanced Query Form
Must contain word(s)
Must not contain word(s)
Exact Phrase
Word(s) beginning with
Search In:
 
Select forum
Date posted
 
By author
Match in

Results 671 - 680 of 2632 in Forum
  • High Voltage | Need help for HVHF pulse generator using function generator

    Posted by rororo74 on Sunday 12 October 2014 - 23:47:11
    ...could design a secondary coil with a large smooth toroid to avoid sparking, and it will radiate the majority of the input power as a huge RF field. De...
  • Tesla Coils | winding lathe built -> Enamel-coated copper wire on PVC water pipe - PVC cement to hold the windings

    Posted by tarakan2 on Wednesday 08 October 2014 - 00:13:37
    ..."Height 2 (HV end)" variables. May I remove the Toroid from my calculation? I wish I could see the formula or a train of formulas that are used...
  • Tesla Coils | Small QCW

    Posted by loneoceans on Monday 29 September 2014 - 05:50:49
    ...to air! - Secondary coil winding: 5.5" with FAT TOROID - Primary Current 145 to 160A depending on spark I'm also running out of bus capacitan...
  • Tesla Coils | Small QCW

    Posted by loneoceans on Monday 29 September 2014 - 05:50:49
    ...ary itself is a 3.5 x 5.5" coil with a small spun toroid, and runs on a TO247 IGBT double-bridge which I made another compact PCB for. https://f...
  • Tesla Coils | Small QCW

    Posted by loneoceans on Monday 29 September 2014 - 05:50:49
    ...thoughts. Also for more reference, my secondary + toroid resonates at 408kHz by itself, and the primary in its current configuration resonates at 392k...
  • Tesla Coils | Small QCW

    Posted by loneoceans on Monday 29 September 2014 - 05:50:49
    ...5.5 inch wound with AWG 32 wire with a 8 x 2 inch toroid for a frequency of about 400kHz. One of the reasons why I suspect that my coil is making thos...
  • Tesla Coils | Small QCW

    Posted by loneoceans on Monday 29 September 2014 - 05:50:49
    ...ranches or bends. These setups always had bigger toroids. Here i tried a bigger toroid (and removed the MMC from my secondary) on my gun V2 wi...
  • Tesla Coils | Small QCW

    Posted by loneoceans on Monday 29 September 2014 - 05:50:49
    ...encies seem to produce straighter sparks; also my toroid is pretty small (8x2") - a bigger one might be better in directing sparks. Right now ha...
  • Tesla Coils | Small QCW

    Posted by loneoceans on Monday 29 September 2014 - 05:50:49
    ..., and have also been experimenting new ‘FAT TOROID’ for the coil :-). After discussing with uspring and many other more experienced ...
  • Tesla Coils | Small QCW

    Posted by loneoceans on Monday 29 September 2014 - 05:50:49
    ..., and have also been experimenting new ‘FAT TOROID’ for the coil :-). After discussing with uspring and many other more experienced ...
 
Legal Information
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.