A Tube Delay..

mixsit

Well-known member
Tube-Delay-1-web.jpg
:p It's actually what you call a delay relay - or time delay. It's out of an old air conditioner built in the early 80's. Tubes, amplifiers and such in control circuits were phasing out about then. You can see the heater coils in the first one and sort of see the contact points in this second one.
Tube-Delay-2-web.jpg
 
If your electric utility that supplies your power hasn't done much in the way of equipment upgrades, there's a fair chance that they may still use some old circuit breaker controls (General Electric) that use those Amperite delay tubes to time the restoration of the power after a circuit fault trips off the breaker. Seldom had any problems with the Amperite tubes.

'If it ain't broke, don't fix it'? 'Least unlike most of or grid..? They're immune to EMP's!
:D

Hmm. I wonder if there's still elevators with those huge rack of relays they used to use?
(Yikes, ever seen what a large phone co used to have? Thousands upon thousands of moving parts to do that.
 
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