Welcome
Username or Email:

Password:


Missing Code




[ ]
[ ]
Online
  • Guests: 19
  • Members: 0
  • Newest Member: omjtest
  • Most ever online: 396
    Guests: 396, Members: 0 on 12 Jan : 12:51
Members Birthdays:
One birthday today, congrats!
Sparcz (69)


Next birthdays
07/11 Bfeigum (35)
07/12 genious 7 (32)
07/13 Friday (55)
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 Chatting
« Previous topic | Next topic »   

Post Your Cool Pic Here!

Move Thread LAN_403
Tesla Fan
Mon Nov 15 2010, 07:25PM
Tesla Fan Registered Member #3353 Joined: Sat Oct 23 2010, 11:21PM
Location: Greece
Posts: 90
Ok, but it still sound like a waste of the device... cheesey
I do not think that you should be afraid of the voltage, my thyristors are meant to "switch" up to 1600V, and so they are verified to not leak any voltage to the case (heatsink) up at least that voltage. I assume yours are similar, so they must have at least 1KV "breakdown" voltage between pins and case. I am not 100% sure, but mine used to actualy rectify about 500 volts and the heatsink was connected to case of the machine (ground).


1289848786 3353 FT6000 Thyristors


Anyway, here are some cool pictures of Greece (mine, no photoshop):

1289848994 3353 FT6000 Didima 3 Resize

1289848994 3353 FT6000 Eretria Resize

1289848994 3353 FT6000 Grammatiko Resize

1289848994 3353 FT6000 Istiea2 Resize

1289848994 3353 FT6000 Karditsa2 Resize

1289848994 3353 FT6000 Lichada Resize

1289848994 3353 FT6000 Sifnos2 Resize
Back to top
Turkey9
Mon Nov 15 2010, 09:58PM
Turkey9 Registered Member #1451 Joined: Wed Apr 23 2008, 03:48AM
Location: Boulder, Co
Posts: 661
This was taken at 90,000 feet on board a balloon. This was the last picture taken before the balloon burst and the payloads hit Mach 1 coming down!

1289858174 1451 FT1630 Img 2412
Back to top
rp181
Tue Nov 16 2010, 12:48AM
rp181 Registered Member #1062 Joined: Tue Oct 16 2007, 02:01AM
Location:
Posts: 1529
Was that your balloon? If so, any more information?

Cool picture!
Back to top
ScotchTapeLord
Tue Nov 16 2010, 02:21AM
ScotchTapeLord Registered Member #1875 Joined: Sun Dec 21 2008, 06:36PM
Location:
Posts: 635
Hope there were no kids in that balloon. :P mistrust
Back to top
Coronafix
Tue Nov 16 2010, 11:37AM
Coronafix Registered Member #160 Joined: Mon Feb 13 2006, 02:07AM
Location: Melbourne, Australia
Posts: 938
That was the paper aeroplane attached to the helium balloon that the UK guys sent up wasn't it?
Back to top
Killa-X
Thu Nov 18 2010, 12:55AM
Killa-X Registered Member #1643 Joined: Mon Aug 18 2008, 06:10PM
Location:
Posts: 1039
Been having some fun with Zen Magnets... (216 pack)
Link2

1290041730 1643 FT6000 Cimg2258

1290041730 1643 FT6000 Cimg2261

1290041730 1643 FT6000 Cimg2262

1290041730 1643 FT6000 Cimg2263

1290041730 1643 FT6000 Cimg2265
Back to top
Adam Munich
Thu Nov 18 2010, 01:03AM
Adam Munich Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
Nevermind, I looked at the wrong price.
Back to top
klugesmith
Thu Nov 18 2010, 03:43AM
klugesmith Registered Member #2099 Joined: Wed Apr 29 2009, 12:22AM
Location: Los Altos, California
Posts: 1716
Killa-X wrote ...
Been having some fun with Zen Magnets... (216 pack)
Those sure are fun. Could you use them for a little nuclear-fusion experiment (that belongs in a new thread)?
1. make up some "rings" of 3 balls and 5 balls. Odd numbers are less stable (higher energy) than even-numbered rings.
2. scatter the 3-ball rings (triangles) on a rug, and bombard them with 5-ball rings dropped from a foot or so above.
Do you find that more than 50% of the time, the result is an 8-ball ring and not some other pattern?
Back to top
Turkey9
Thu Nov 18 2010, 04:19AM
Turkey9 Registered Member #1451 Joined: Wed Apr 23 2008, 03:48AM
Location: Boulder, Co
Posts: 661
Yeah it was a balloon satellite that was sent up as part of a class here at the University of Colorado. It's through the Colorado Space Grant Consortium. For the class, 10 groups each built an experiment into a small enclosure and sent it up to the edge of space. Pretty cool! If you want even more info about COSGC go here : spacegrant.colorado.edu
Back to top
quicksilver
Thu Nov 18 2010, 04:17PM
quicksilver Registered Member #1408 Joined: Fri Mar 21 2008, 03:49PM
Location: Oracle, AZ
Posts: 679
Ken M. wrote ...





Then while cleaning the brush disaster....

1286696024 618 FT0 P1040017


One tiny little blip out of thousands of turns & the coil is clean except that one.....I can really empathize!
My nephew wound one of the ugliest coils in history: overlap over overlap. But he was determined to see if he could just get it lit up. He coated it with paraffin and hot-melt glue (actually a clean job on that) and it worked fine. Virtually no corona and even though there was almost countless over-laps, it's performance was appropriate. It was simply a off-white tube. You might be able to tape off a "band" around that over-lap and coat that with hot-melt glue and paraffin in a small very clean band and it may not look all that bad. It would certainly work. In fact I doubt that if covered deeply enough with polyurethane, you may have not problem at all. But I DO understand the blemish issue, especially from a hand-wound coil: it's really annoying. A thin white band may not be all that nasty.
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.