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DA250

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ID = 15737
       
Country:
Great Britain (UK)
Brand: Osram-Valves GB (not MO-Valves)
Tube type:  Triode, vacuum   Power/Output 
Identical to DA250

Base L4 British large 4 pin (1922, LG4)
Filament Vf 10 Volts / If 2 Ampere / Direct / Specified voltage AC/DC
Description

Va <2500, Pa <250W, gm =7mA/V at Ia=0.1A, 2.5kV.

A pair operating in class AB2 can produce 800W of audio power.

 
Dimensions (WHD)
incl. pins / tip
113 x 375 x mm / 4.45 x 14.76 x inch
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   GEC data sheet April 1952

da250_app.png
DA250: GEC's catalogue supplement
Anonymous 413 Collector

da250_pinout.png DA250: From my schematic collection.
Pier Antonio Aluffi


Just Qvigstad
da250_data.png
DA250: MARCONI RECEIVING VALVES, LONDON, 1938
Jose Casas-Avalos

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