1. Forum
  2. Usenet
  3. SCI.ELECTRONICS.DESIGN

  • Re: Chewbs

    From Cursitor Doom@21:1/5 to All on Sun Jul 20 13:13:02 2025
    On Sun, 20 Jul 2025 12:42:29 +0100, Cursitor Doom <cd@notformail.com>
    wrote:

    Gentlemen,

    I was attempting to make an inventory of my copious spares collection
    because I can *never* find what I want when I need it among the sheer >vastness of my stash. Whilst attempting this quest worthy of Odysseus,
    I came across some old valves ("toobs" for our American friends) which
    I've not seen before and was wondering if anyone here recognises them.
    I can't ever remember seeing valves with radial pins (plugging them in
    must have been a challenge) but we learn something every day, I guess.

    https://disk.yandex.com/i/agyvLdwrzRdWeg

    To get a better picture, click on the dots in the top right hand
    corner and select "original size".

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Cursitor Doom@21:1/5 to All on Sun Jul 20 12:42:29 2025
    Gentlemen,

    I was attempting to make an inventory of my copious spares collection
    because I can *never* find what I want when I need it among the sheer
    vastness of my stash. Whilst attempting this quest worthy of Odysseus,
    I came across some old valves ("toobs" for our American friends) which
    I've not seen before and was wondering if anyone here recognises them.
    I can't ever remember seeing valves with radial pins (plugging them in
    must have been a challenge) but we learn something every day, I guess.

    https://disk.yandex.com/i/agyvLdwrzRdWeg

    CD

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Phil Hobbs@21:1/5 to Cursitor Doom on Sun Jul 20 12:39:57 2025
    Cursitor Doom <cd@notformail.com> wrote:
    Gentlemen,

    I was attempting to make an inventory of my copious spares collection
    because I can *never* find what I want when I need it among the sheer vastness of my stash. Whilst attempting this quest worthy of Odysseus,
    I came across some old valves ("toobs" for our American friends) which
    I've not seen before and was wondering if anyone here recognises them.
    I can't ever remember seeing valves with radial pins (plugging them in
    must have been a challenge) but we learn something every day, I guess.

    https://disk.yandex.com/i/agyvLdwrzRdWeg

    CD


    Acorn triodes. I have a Measurements 59 UHF grid dip oscillator that uses
    one.

    They were more or less obsoleted when Nuvistors came along.

    Cheers

    Phil Hobbs

    --
    Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Cursitor Doom@21:1/5 to pcdhSpamMeSenseless@electrooptical. on Sun Jul 20 15:02:11 2025
    On Sun, 20 Jul 2025 12:39:57 -0000 (UTC), Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote:

    Cursitor Doom <cd@notformail.com> wrote:
    Gentlemen,

    I was attempting to make an inventory of my copious spares collection
    because I can *never* find what I want when I need it among the sheer
    vastness of my stash. Whilst attempting this quest worthy of Odysseus,
    I came across some old valves ("toobs" for our American friends) which
    I've not seen before and was wondering if anyone here recognises them.
    I can't ever remember seeing valves with radial pins (plugging them in
    must have been a challenge) but we learn something every day, I guess.

    https://disk.yandex.com/i/agyvLdwrzRdWeg

    CD


    Acorn triodes. I have a Measurements 59 UHF grid dip oscillator that uses >one.

    They were more or less obsoleted when Nuvistors came along.

    Cheers

    Phil Hobbs

    Thanks, Phil. I've got the Boonton Megacycle meter GCO and will set
    them aside in case that goes tits-up like so much of my vintage test
    gear does all too frequently.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From ehsjr@21:1/5 to Cursitor Doom on Sun Jul 20 14:09:20 2025
    On 7/20/2025 7:42 AM, Cursitor Doom wrote:
    Gentlemen,

    I was attempting to make an inventory of my copious spares collection
    because I can *never* find what I want when I need it among the sheer vastness of my stash. Whilst attempting this quest worthy of Odysseus,
    I came across some old valves ("toobs" for our American friends) which
    I've not seen before and was wondering if anyone here recognises them.
    I can't ever remember seeing valves with radial pins (plugging them in
    must have been a challenge) but we learn something every day, I guess.

    https://disk.yandex.com/i/agyvLdwrzRdWeg

    CD

    Acorn tubes, as Phil said.
    For more info see
    https://www.r-type.org/articles/art-151.htm

    While you're at it, search for pencil triodes.

    Ed

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)