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DA30

Information - Help 
ID = 15734
       
Country:
Great Britain (UK)
Brand: MO Valve Co. Ltd.; GB
Developer: Marconi-Osram - (Valves/Tubes); GB 
Tube type:  Triode, vacuum   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to DA30
Similar Tubes
Normally replaceable-slightly different:
  CV1178

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 2 Ampere / Direct / Parallel, (AC/DC)
Description

Pa<30W; Va<500. Tube designed for use as an output stage, mainly in push pull amplifiers where a considerable amount of undistorted power is required.

 
Dimensions (WHD)
incl. pins / tip
66 x 160 x mm / 2.60 x 6.30 x inch
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   
  da30_app.png
  DA30: GEC's catalogue supplement
Anonymous 413 Collector
 
wp_001138_534x1024.jpg
DA30: From own tube
Anonymous 936 Collector

 
1_83.png
DA30: Telefunken Werkstattbuch
Wolfgang Bauer

 
da30_data.png
DA30: MARCONI RECEIVING VALVES, LONDON, 1938
Jose Casas-Avalos


from Just Qvigstad

Collection of a member from GB

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