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#1 For high-power enthusiasts
Posted: Mon Feb 18, 2019 6:14 pm
by IslandPink
Something that popped up in discussions on the Joelist today -
http://www.hfti.fr/userfile/by1144l1.pdf
Some nice spec values there. Needs a special boiler for steam-cooling of the anode, apparently.
#2 Re: For high-power enthusiasts
Posted: Mon Feb 18, 2019 6:37 pm
by pre65
E2V were EEV = English Electric Valves.
Not far from me in Chelmsford.
Filament current 263 - 311A @ 9.6v
And weighs 57KG.
WOW.
#3 Re: For high-power enthusiasts
Posted: Mon Feb 18, 2019 6:41 pm
by RhythMick
Scary. You'd have to be mad, mad I tell you mad, mad. Nobody around here would... Nurse, nurse, time for my meds...
#4 Re: For high-power enthusiasts
Posted: Mon Feb 18, 2019 8:08 pm
by IslandPink
There are all sorts of fun values on there - bias : -765V , grid current : 3.1amps
#5 Re: For high-power enthusiasts
Posted: Tue Feb 19, 2019 7:03 pm
by Mike H
Note the warnings about radiation hazard.
#6 Re: For high-power enthusiasts
Posted: Tue Feb 19, 2019 9:07 pm
by jack
When I were a lad, we went on a trip into the crystal palace BBC transmitter rooms, deep beneath the mast...
They had water-cooled valves like these for TV. Beasts. Cabinets were glass-fronted and you could see them boiling away merrily...
#7 Re: For high-power enthusiasts
Posted: Wed Feb 20, 2019 7:17 pm
by chris661
Serious power there. I think you'd struggle to run it on a domestic (~100A) supply. A 63A 3-phase would have a fighting chance.
Is it bad that I want to grab a few of these for PA use?
Chris