30 Sep
2024
30 Sep
'24
6:31 p.m.
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(a)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