Welcome
Username or Email:

Password:


Missing Code




[ ]
[ ]
Online
  • Guests: 34
  • 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!
Rustycan (31)
H8erade (29)
Flood_of_SYNs (42)


Next birthdays
04/16 Rustycan (31)
04/16 H8erade (29)
04/16 Flood_of_SYNs (42)
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 :: Sale and Trade
« Previous topic | Next topic »   

Nuvistors and Tek scope bits

Move Thread LAN_403
James
Wed May 04 2011, 10:20PM
James Registered Member #3610 Joined: Thu Jan 13 2011, 03:29AM
Location: Seattle, WA
Posts: 506
Power up the filament at the rated voltage. If it doesn't go open circuit in a short time, then the vacuum is ok and the tube is probably fine.

I've never seen a tube tester that could handle Nuvistors, but it wouldn't be too hard to rig up a basic oscillator or something that used one.
Back to top
testtest
Thu May 05 2011, 01:23AM
testtest Registered Member #3271 Joined: Mon Oct 04 2010, 02:29AM
Location: Canada
Posts: 159
James wrote ...


I've never seen a tube tester that could handle Nuvistors, but it wouldn't be too hard to rig up a basic oscillator or something that used one.

They do exist! Mostly from the late 60s to 70s when they were used in colour TV at the tuner front end and IF sometime, mostly in RCA sets.

Here are pix of my Mercury 1101 tester, socket 10 and 14 take both types. The tester is identical to the Eico model in the US.
1304558533 3271 FT114558 P5045050 Medium

1304558533 3271 FT114558 P5045049 Medium
Back to top
testtest
Thu May 05 2011, 01:25AM
testtest Registered Member #3271 Joined: Mon Oct 04 2010, 02:29AM
Location: Canada
Posts: 159
Nah wrote ...

A fourm member might offer to test them on a tube tester, for now, you could check filliments using a Multimeter and the datasheet. I have a friend that might be able to check them

See previous post. If you send me the Nuvistor number I'll check to see if it is listed for my tester. I could test them for you should you wish. Might be easier to find someone close to you with a suitable tester perhaps!!

EDIT: just read back conundrum's original posting: the 7586 is listed as "8 E 4 A" on socket "10" for my tester.
Back to top
Conundrum
Sun May 08 2011, 02:38PM
Conundrum Registered Member #96 Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4062
Listed on Ebay, under "c0nundrum"
Link2
Also have some power germaniums too.

I tested one and its filament looks fine, measuring about 7-8 ohms.



Regards, -A

Link2 Grr, no shipping...
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.