Welcome
Username or Email:

Password:


Missing Code




[ ]
[ ]
Online
  • Guests: 18
  • Members: 0
  • Newest Member: omjtest
  • Most ever online: 396
    Guests: 396, Members: 0 on 12 Jan : 12:51
Members Birthdays:
One birthday today, congrats!
MicroTesla (34)


Next birthdays
07/09 Avi (41)
07/09 Jannick Hagen (15)
07/10 Sparcz (69)
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 :: High Voltage
« Previous topic | Next topic »   

levitating toy

1 2 
Move Thread LAN_403
DrZoidberg
Sat Sept 20 2008, 07:16PM Print
DrZoidberg Registered Member #350 Joined: Mon Mar 27 2006, 05:14PM
Location:
Posts: 106
A toy that uses static electricity
Link2

I wonder. Is it just a plastic stick that is rubbed or is there more to it?

edit:
There is a small van de graaff generator in that stick.
I think it's an interesting toy.
Back to top
Antonio
Sun Sept 21 2008, 02:36AM
Antonio Registered Member #834 Joined: Tue Jun 12 2007, 10:57PM
Location: Brazil
Posts: 644
Looks active. Note in the video when the wide ring is picked with the wand and charged.
Probably an electronic negative ion generator is used.
Back to top
aonomus
Sun Sept 21 2008, 02:44AM
aonomus Registered Member #1497 Joined: Thu May 22 2008, 05:24AM
Location: Toronto, Ontario, Canada
Posts: 801
When the ring is collapsed it doesn't want to 'fly', perhaps its just a alternating magnetic field inducing eddy currents through the plastic (aluminized mylar?)
Back to top
DrZoidberg
Sun Sept 21 2008, 04:52AM
DrZoidberg Registered Member #350 Joined: Mon Mar 27 2006, 05:14PM
Location:
Posts: 106
Every site I found about this toy says it countains a VDG.
I found another video. I think it shows that that stick really is using static electricity.
Link2
Back to top
Antonio
Sun Sept 21 2008, 01:52PM
Antonio Registered Member #834 Joined: Tue Jun 12 2007, 10:57PM
Location: Brazil
Posts: 644
Yes, the wand can contain a small VDG. Note in the video a motor noise when the demonstrator pushes the button on the wand. An electronic HV generator would have problems in generating enough voltage, and could be dangerous. The effect is obviously electrostatic. Demonstrations of this kind, using feathers and frictioned bodies, are described in many old texts about electricity.
Link2
Back to top
Conundrum
Fri Sept 26 2008, 09:02PM
Conundrum Registered Member #96 Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4062
Hmm. Piezo transformer(s) + small Tesla coil secondary tuned to Fr of piezo transformer? might work.
-A
Back to top
Antonio
Fri Sept 26 2008, 11:16PM
Antonio Registered Member #834 Joined: Tue Jun 12 2007, 10:57PM
Location: Brazil
Posts: 644
Conundrum wrote ...

Hmm. Piezo transformer(s) + small Tesla coil secondary tuned to Fr of piezo transformer? might work.
-A
A Tesla coil doesn't produce a static charge.
Back to top
Avi
Sat Sept 27 2008, 10:32AM
Avi Registered Member #580 Joined: Mon Mar 12 2007, 03:17PM
Location: Melbourne, Australia
Posts: 410
i tried charging a TC topload to 50kv DC and put a very thin and light foil ring on top of it, it just flys off the top. Is there some sort of trick to make it stable?
Back to top
uzzors2k
Sat Sept 27 2008, 11:17AM
uzzors2k Registered Member #95 Joined: Thu Feb 09 2006, 04:57PM
Location: Norway
Posts: 1308
Some law of physics states that no stable arrangement of fields can cancel eachother, or something to the same effect. The trick to making it stable is constantly adjusting the topload position to counter the tinfoil's movement.

Aha! I knew I hadn't made it up. -> Earnshaw's theorem.
Back to top
Experimentonomen
Sat Sept 27 2008, 12:30PM
Experimentonomen Registered Member #941 Joined: Sun Aug 05 2007, 10:09AM
Location: in a swedish junk pile
Posts: 497
Looks faked to me.
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.