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 #212
Joined: Sun Feb 19 2006, 05:42PM
Location: Texas
Posts: 20
I'm cleaning out some junk that some of you folks might be interested in:
HeathKit 10-12 scope[/u] - I used this scope for various experiments with video. Did a couple of rewiring on this scope, but I believe it still works. Also it comes with a Z-axis. CRT is 5" type, 5BP1 or 5UP1 (can't remember). CRT could be used in a scope clock or whatever. SOLD
Box of eight 807 tubes - some are used, some untested. $10 OBO (or best offer)SOLD
Box of other tubes for $15 OBOSOLD
Blue plastic box full of high voltage? (solid state) rectifiers and other low voltage high current ones. Most of the rectifiers looks similar to a thin doorknob capacitor with two screw terminals on the ends. Not sure if they're rated for high voltages or just high currents. FREE for cost of postage.
CRTs - I have four to offer, two are 1808? CRTs (3") which probably were used in some sort of radar because they have a screw in the middle. Those should be good, the getter is silver so they still have a vacuum. The third CRT is a 3BP1 (green phosphor) that has little or no vacuum (grayish-white getter), and the fourth is a dead 3KP4 CRT (white phosphor) that was used in the well-known 1948 Pilot TV-37 televisions. Although the last two CRTs are dead, they can be used for other high voltage experiments with lasers or near TCs to light up the phospor face. $5 for all of the CRTs.SOLD
Box with a 9kV NST and four old Apple computer power supplies (from a IIe maybe?). The 9kV NST has been used in a Tesla coil, and the amount of use it had before then is unknown, but it still works. Some of the Apple PSUs work. $10 OBO
Big variac - I think this one is rated about 15-20 amps, it was pulled out of some kind of regulated high current power supply unit. It has some kind of stepper/servo motor on the top that turns the variac, and the slider has a limited range because of some kind of variable resistor on the opposite side of the slider, which probably was used by the control circuit to control the motor for regulating the voltage output. This part could be removed and the whole range capability of the variac can be used. $15 OBOSOLD
Another variac - probably rated about 5 to 8 amps at most, it is "complete" with a outlet and cord, I built the whole unit in less than a hour for controlling some motors in another project. $10 OBOSOLD
Vintage battery charger - from the 20s-30s. It had a BIG old rectifier tube, but it has no vacuum (all white). The tube is with the box of various stuff mentioned above, but if one wants the tube with this thing then let me know. There is a BIG heavy transformer inside this battery charger, long long before they had the lighter switching power supplies to supply the high currents. Could be rewound for an arc welder or something. FREE for cost of postage.
If you're interested in any of the above items, then please email me at **link**. If there are any questions, then email me.
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.
Stuff for sale/trade
