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DE5_Marconi

Information - Help 
ID = 30689
       
Country:
Great Britain (UK)
Brand: MO Valve Co. Ltd.; GB
Developer: Marconi-Osram - (Valves/Tubes); GB 
Tube type:  Triode, vacuum   Power/Output 
Identical to DE5_Marconi
Similar Tubes
Other class quality (otherwise equal):
  CV2891
Other characteristic (electr. data):
  DE5B
First year 1924 - - Manufacturers Literature Marconi Sales List 1924
First Source (s)
1924 : British Radio Valves - The Vintage Years, Thrower
Oct.1928 : - - Manufacturers Literature Date of Marconi Publication No. 520A.

Base Europe 4-Pin (A, 4A, B4, since 1914)
Was used by Radio/TV-reception etc.
Filament Vf 5 Volts / If 0.25 Ampere / Direct / Battery =
Description

One of the first Dull Emitter Tubes and appears on Marconi sales lists in November 1924.

The filament voltage is specified as in the range 5 to 6V and anode voltages from 20 to 60V giving an amplification factor of 7.

 
Dimensions (WHD)
incl. pins / tip
52 x 118 x mm / 2.05 x 4.65 x inch
Weight 50 g / 1.76 oz
Literature Babani, International Radio Tube Encyclopaedia   1925 Brown Brothers Catalog 217
Saga of the Vacuumtube, Tyne   
- - Manufacturers Literature
 
de5_a.jpg
DE5_Marconi: RFJ
Roy Johnson

 
de5_marconi_spec.png
DE5_Marconi: Banneitz, TB der drahtl. Teleph. 1927
Anonymous 15 Collector


Usage in Models 1= 1924??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1


Forum contributions about this tube
DE5_Marconi
Threads: 1 | Posts: 1
Hits: 1895     Replies: 0
DE5_Marconi (DE5_Marconi)
Gerhard Eisenbarth
13.Jul.11
  1

Testbericht zur Röhrentype DE5 von Marconi-Osram.

Quelle: The Wireless World and Radio Review, 30.July 1924

Attachments

 
DE5_Marconi
End of forum contributions about this tube

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