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.
Registered Member #213
Joined: Sun Feb 19 2006, 05:48PM
Location: Blythewood, SC
Posts: 39
I know this isn't a very original pic post, but here it is. My first tesla coil. LINK TO MY BLOG And yes, I know pretty much everything about it was designed incorrectly, but i already had everything but the caps, so i just through it together. P.S. This goes without saying, but dont try to do what I'm doing in the the last pic.
Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
I've heard rumours of a Win 3.2, but never seen it with my own eyes.
The blue things are Jennings vacuum variable capacitors that I bought to make a magnetic loop antenna. A 12-500pF 15kV and a 7-1000pF 5kV. They were blue when I got them.
Registered Member #29
Joined: Fri Feb 03 2006, 09:00AM
Location: Hasselt, Belgium
Posts: 500
Hello fellow 4HVers! Just because I have been absent for a while does not mean I have been idle! I moved into a new apartment last month and had to set up my "lab" again.. Work pressures did not allow me to be very quick about it (unfortunately). However, I am mostly settled in and ready to start on a few new fun projects.
Here is the workbench and test-instrument "tower"..
My prize acquisition this summer was a second-hand Tektronix 494 spectrum analyser on Ebay (10kHz to 21GHz).
I fired up my HF tesla coil and here is the spectrum analyser display with no discharge.
With a discharge, the center frequency shifts down a little bit and more noise is apparent on the signal.
Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
Whee, Waverider has a metal gate MOSFET, a DEIC420, and a spectrum analyzer. He wins this week's Boys' Toys prize How much was the spectrum analyzer? Do I even want to know the answer?
Also, apartment workshops FTW! Mine is in the corner of the kitchen (the item underneath the scope is the fridge)
Marko, don't be sad, if you are having trouble getting a specific part for a specific project you are stuck on, I'm sure other forum members can help. I'm not sure if the argument "Give me a DEIC420 because WaveRider has one" would work though :P
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.
Post Your Cool Pic Here!
How much was the spectrum analyzer? Do I even want to know the answer?
