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Old 21st June 2012, 06:49 AM   #1
stajo is offline stajo  Sweden
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Default DL22N

I have a bunch of those. They can come from some swedish military supply. I've read thar they were used in torpedo control systems

Anybody knows anything about them, if they can be used in audio, linearity etc? All I can find is this DL 22N, Tube DL22N; Röhre DL 22N ID33454, Vacuum Pentode and no datasheet.

Best regards
Staffan
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Old 21st June 2012, 10:56 AM   #2
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Some basic info here Electron Tubes & Valves Database - Index - Cross Reference under DL22. The DL22N has metal envelope instead of glass.
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Old 23rd June 2012, 07:00 AM   #3
stajo is offline stajo  Sweden
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Thanks. Well it seems like a low voltage direct heated pentode for battery driven amplification, so the torpedo rumour might be correct.

Eventually I could curve trace it manually. Anyone knows a thread about doing that?

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Staffan
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Old 23rd June 2012, 08:34 AM   #4
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DL22 is listed in the VADE-MECUM

http://frank.pocnet.net/short/054/1/197.pdf
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