EV>One day when I was standing around watching the Electronic Technicians
EV>(ET) repair a Radar System on the ship I was on.
EV>The ETs would take some measurements with their Volt Meter and have to
EV>turn the power off to replace something.

EV>When the power was turned back on, there was a Motorized Timer circuit
EV>to first turn on the Filaments of the tubes and then later to allow the
EV>High Voltage to be switched on. (Quite a bit later)

EV>Of course this was to protect the Mercury Vapor Rectifier tubes.

EV>Then the ETs would find something else that wasn't working so they had
EV>to shut down the power again, change a part, turn the power back on.

EV>I was a Radioman not a ET, so I wasn't taking part in the repairs to the
EV>Radar System, I just thought that maybe I could learn something from
EV>watching the ETs at work.

I was an Interior Comunications Electricial and did the same thing on
a Submarine because of my Interenst in "Electronics". Which by the way
when I was in high School was called "Radio Electricity"

Because fo the warm up burn in time on a New Tube the ET's built a rack
with sockets for a set of finals with filament power so they were ready
to go in case of a failure.
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 þ SLMR 2.1a þ Typo Tom Strkes Again