Welcome
Username or Email:

Password:


Missing Code




[ ]
[ ]
Online
  • Guests: 60
  • Members: 0
  • Newest Member: omjtest
  • Most ever online: 396
    Guests: 396, Members: 0 on 12 Jan : 12:51
Members Birthdays:
All today's birthdays', congrats!
dan (37)
rchydro (64)
CapRack (30)


Next birthdays
11/07 Dave Marshall (40)
11/07 Worms (46)
11/08 Bert (77)
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 :: General Science and Electronics
« Previous topic | Next topic »   

LED incapacitator

Move Thread LAN_403
IamSmooth
Tue Aug 12 2014, 03:16AM Print
IamSmooth Registered Member #190 Joined: Fri Feb 17 2006, 12:00AM
Location:
Posts: 1567
Is anyone familiar with this device? I have read basic information about it, but I am unsure if it ever really worked. Does anyone have any knowledge of it other than what I can read on wikipedia?
Back to top
Patrick
Tue Aug 12 2014, 04:04AM
Patrick Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
Ive seen these "kinda-sorta-prototypes", after 9/11 in the bay area. i was never a test subject, but from those who got flashed with it, they said normal movements in combat, and coordination were immediately difficult or impossible.

this was always described as a less than lethal type weapon for taking down people in crowds or passenger jets, with out shooting.

They seem more like a curiosity. I don't really know how effective they are, haven't seen or heard about them in a decade... I don't even think there really deployed to police here in the US.





Back to top
BigBad
Wed Aug 13 2014, 12:31AM
BigBad Registered Member #2529 Joined: Thu Dec 10 2009, 02:43AM
Location:
Posts: 600
I think it's really just a dazzling bright light; it will hurt to look at, and it will close your pupils right down when you look in that direction so it will look 'dark' in that direction and you can't shoot or throw anything accurately at whoever is holding it because you can't see them.
Back to top
Patrick
Wed Aug 13 2014, 03:36AM
Patrick Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
BigBad wrote ...

I think it's really just a dazzling bright light; it will hurt to look at, and it will close your pupils right down when you look in that direction so it will look 'dark' in that direction and you can't shoot or throw anything accurately at whoever is holding it because you can't see them.

supposedly, they cuase involuntary reflex and inner ear visual spatial problems, worse then just a bright strobe for example. But if they're so great, i sure don't see them being used much.
Back to top
Artlav
Fri Aug 22 2014, 11:59AM
Artlav Registered Member #8120 Joined: Thu Nov 15 2012, 06:06PM
Location: Moscow, Russia
Posts: 94
Hm. From what i heard, a bright strobe light in 5-20Hz range disables the ability to perceive motion.

To try it yourself - fill a glass of water (the faster it fills, the better the effect), looking at it in normal light.
You should have no problems turning the water off before it overfills.

Now try the same thing while blinking as fast as you can.
You would see the scene quite clearly, and yet should have difficulty estimating the rate the glass is filling at, and will likely overfill or underfill it.

In combat situations that effect means that the target won't be able to predict movement, see or block hits, etc.
Back to top
Alex M
Sat Aug 23 2014, 08:47AM
Alex M Registered Member #3943 Joined: Sun Jun 12 2011, 05:24PM
Location: The Shire, UK
Posts: 552
Similar to the one used here Link2 ? If so they are called "tactical strobe lights" and are quite effective when used in the right setting.

You can get a feel for it with a power LED and PWM, like Artlav said use a low frequency and a low duty cycle. They are great fun on a darkened flight of stairs!

If you need a circuit with jelly bean parts then this circuit will let you adjust both the duty cycle and frequency independently Link2
Back to top

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.