2026-07-31 20:02 UTC
@kenshirriff@oldbytes.space
Looks like it was a “regular” (dual triode from the description) tube judging by the notes here but maybe made to exacting specs for use in “calculating machines”? Not really a tube guy but like the idea of heating metal until electrons are emitted …
https://www.radiomuseum.org/tubes/tube_2033.html
Replies (1)
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@kenshirriff@oldbytes.space 2026-07-31 20:20
@VE2UWY@mastodon.radio Yes, the tube is based on a regular tube (the 6J6), but IBM redesigned it for more reliability. They changed the grid and plate to avoid shorts from tiny conductive particles and split the shared cathode into two separate cathodes. (Source: "IBM's Early Computers", p66)