On 9/30/2024 6:31 PM, Jon Elson via cctalk wrote:
On 9/30/24 16:23, Paul Koning via cctalk wrote:
One application for devices like that would be vacuum tube power
amplifiers, to delay the high voltage power supply until after the
heater current has been on for a bit.
paul
On Sep 30, 2024, at 5:21 PM, Van Snyder via cctalk
<cctalk@classiccmp.org> wrote:
I have two SPST time delay 12-volt relays packaged like vacuum tubes
with octal bases, Amperite models 12N010 (ten seconds) and 12C5 (five
seconds).
Another place they were used (but I think 60 second delay) was in the
IBM 2314 disk system, where these delayed loading the heads until the
drive had been spinning for 60 seconds or so.
Jon
Now that's an actual antique computer application, though I'm surprised
they didn't use a solid state implementation.
Bob
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