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Post #949271

2026-04-05 14:46 UTC

feast your ocular orbs on this cross section of a miniature Nuvistor vacuum tube.

Replies (9)

  • @ferrix@mastodon.online 2026-04-06 18:40

    @tubetime@mastodon.social @North@chaos.social poor lil guy will never vacuum again

    Open ##957286

  • @tubetime@mastodon.social 2026-04-05 14:46

    RCA published a really nice cutaway drawing with annotations.

    Open ##1569223

  • @tubetime damn I want one so much now

    Open ##1569238

  • @grishka@friends.grishka.me 2026-04-05 16:07

    You know what I'm curious about? What would happen if technologies like this continued getting developed, of course. We have MEMS chips now, stuff like accelerometers and such, with precise microscopic parts with voids between them. Could this technology be used to manufacture microscopic vacuum tubes?

    Open ##1569242

  • @forty2@oldbytes.space 2026-04-05 16:12

    @tubetime wow! Impressive cutaway skills! (How?!?). For whatever reason, I found nuvistors to have a much shorter life than their larger glass counterparts. When repairing Tektronix 560 series plugins, they’re a common source of trouble. I wonder if that’s just because the cathodes are so much smaller that they loose emission sooner?

    Open ##1569245

  • @oclsc@mstdn.ca 2026-04-05 16:24

    @tubetime Peanut tube! I've got one somewhere in a miscellanous-junk box. Just in case.

    Open ##1569252

  • @ftg@mastodon.radio 2026-04-05 16:25

    @tubetime So that's how they were constructed.

    Open ##1569253

  • @anthony@bitbang.social 2026-04-05 16:47

    @tubetime I have never heard of one of these before, but I watched this #8BitGuy video earlier about what if everything still ran on vacuum tubes where it was mentioned, and then a couple of hours later I see this? Coincidence? https://youtu.be/mEpnRM97ACQ

    Open ##1569254

  • @tubetime cool. Needs some forbidden planet background audio.

    Open ##1569261