radiomuseum.org
Please click your language flag. Bitte Sprachflagge klicken.

DO40

Information - Help 
ID = 68352
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Transmitting Triode, air cooled   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to DO40

Base L4 British large 4 pin (1922, LG4)
Was used by Transmittertube (Radio)
Filament Vf 6 Volts / If 2 Ampere / Direct / Specified voltage AC/DC
Description

Mentioned on advertisement by Mullard, April 1932.

 
Dimensions (WHD)
incl. pins / tip
78 x 172 x mm / 3.07 x 6.77 x inch
Information source -- Original prospect or advert   Advertisement November 1930
British Radio Valves - The Vintage Years: 1904-1925   Page 129

l4_based_triode~~1.png DO40: Peter den Boer
Fin Stewart


Just Qvigstad

Collection of

 
do40.jpg

DO40
 

You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]
  
rmXorg