Welcome
Username or Email:

Password:


Missing Code




[ ]
[ ]
Online
  • Guests: 23
  • Members: 0
  • Newest Member: omjtest
  • Most ever online: 396
    Guests: 396, Members: 0 on 12 Jan : 12:51
Members Birthdays:
One birthday today, congrats!
wpk5008 (34)


Next birthdays
05/09 Alfons (36)
05/09 Coronafix (51)
05/09 AmonRa (44)
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.
Forums
4hv.org :: Forums :: Electromagnetic Radiation
« Previous topic | Next topic »   

EMP Electro Magnetic Pulse

1 2 
Move Thread LAN_403
babou
Fri Dec 19 2008, 09:33PM Print
babou Registered Member #1869 Joined: Fri Dec 19 2008, 09:24PM
Location:
Posts: 2
hello

i dont write good english, so i hope you can understand me.
i make a dream, i post it on other forum but none can help me.

my dream is to make a emp with the lightning, my idea is to make a lighting rod
with a coil. when the lighting touch the lightning rod the coil emit a very short and
power electromagnetic pulse (emp).

can anybody tell me if it can work and how to calculate the coil ?
Back to top
rp181
Fri Dec 19 2008, 09:54PM
rp181 Registered Member #1062 Joined: Tue Oct 16 2007, 02:01AM
Location:
Posts: 1529
What makes you think a coil would make a EMP more powerful then the strike its self? From my knowledge, EMP''s are produced with a straight conductor. Plus, theres these obvious issues:
1) safety. Trying to coax lightning to you is a death wish without proper knowledge
2) Lighting has extreme amounts of currents, that means a exploding coil.
3) the safety of a EMP pulse to nearby things.
4) practicality. Is it really practical for a hobbyist to make a lightning powered EMP?
Back to top
big5824
Sat Dec 20 2008, 12:03AM
big5824 Registered Member #1687 Joined: Tue Sept 09 2008, 08:47PM
Location: UK, Darlington
Posts: 240
off the top of my head, an average lightning strike is about 50KA, which isnt much more than some large hobby railguns, so i doubt the pulse would be very large. Also containing the bolt will be difficult.....I imagine it might just arc through your insulation to short the coil out.
Back to top
Proud Mary
Sat Dec 20 2008, 12:51AM
Proud Mary Registered Member #543 Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
You will be killed!
Back to top
Backyard Skunkworks
Sat Dec 20 2008, 03:16AM
Backyard Skunkworks Registered Member #1262 Joined: Fri Jan 25 2008, 05:22AM
Location: Maryland, USA
Posts: 451
If you want a strong EMP, you'll be much better off with something like Link2 . Of course large EMPs are very dangerous, and you'd need to do this in a very remote area.
Back to top
rp181
Sat Dec 20 2008, 03:38PM
rp181 Registered Member #1062 Joined: Tue Oct 16 2007, 02:01AM
Location:
Posts: 1529
Or not. Magnetic flux compresion devices require high explosives (NOT gunpowder), Specalized blast deflection shields to control the burn propagation, Highly precise timing of the igniter, and it all has to potted in a large block of concrete or something like that.
Back to top
Sulaiman
Sat Dec 20 2008, 03:41PM
Sulaiman Registered Member #162 Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3140
If you want a large emp fly a kite with a conductive wire/string during a storm.
You won't get much more than that.

P.S. could be hazardous ;)
Back to top
Dr. H.
Sat Dec 20 2008, 06:43PM
Dr. H. Registered Member #931 Joined: Mon Jul 30 2007, 05:25PM
Location: Bulgaria
Posts: 486
Or do what scientist do - fire a rocket with a wire.

Cheers
Back to top
Backyard Skunkworks
Sat Dec 20 2008, 07:30PM
Backyard Skunkworks Registered Member #1262 Joined: Fri Jan 25 2008, 05:22AM
Location: Maryland, USA
Posts: 451
rp181 wrote ...

Or not. Magnetic flux compresion devices require high explosives (NOT gunpowder), Specalized blast deflection shields to control the burn propagation, Highly precise timing of the igniter, and it all has to potted in a large block of concrete or something like that.

Yeah, good point. I guess there really arn't any non-suicidal methods for getting medium size EMPs (in between small marx gen and large nuke). smile
Back to top
Shaun
Sat Dec 20 2008, 08:14PM
Shaun Registered Member #690 Joined: Tue May 08 2007, 03:47AM
Location: New Jersey, USA
Posts: 616
Read all posts by EastVoltResearch in this thread. He explains how an amateur would go about building an inefficient but possibly effective EMP device. It's still no easy task.
Back to top
1 2 

Moderator(s): Chris Russell, Noelle, Alex, Tesladownunder, Dave Marshall, Dave Billington, Bjørn, Steve Conner, Wolfram, Kizmo, Mads Barnkob

Go to:

Powered by e107 Forum System
 
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.