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TDD13C

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ID = 14888
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Double Diode-Triode   Audio Frequency 
Identical to TDD13C
Similar Tubes
Normally replaceable-slightly different:
  DTU1
Other characteristic (electr. data):
  HAD
First Source (s)
22.Nov.1935 : Wireless World (The), London (WW, 79)
Base British-7-Pin, old (M7A) (Codex=Nb)
Was used by Radio/TV-reception etc.
Filament Vf 13 Volts / If 0.2 Ampere / Indirect / Specified voltage AND current AC/DC
Description

Metallised bulb only (Mullard 1935 data)

 
Information source History of the British Radio Valve to 1940   p. 150 & 179
Babani, International Radio Tube Encyclopaedia   p. 146 & 147
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49
154_6.png TDD13C: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad 		tdd13c_techdat01.png
TDD13C: Mullard Valves 1936
Peter Hoddow
Usage in Models 2= 1935? ; 1= 1936?? ; 4= 1936? ; 1= 1936 ; 1= 1937? ; 8= 1937 ; 5= 1938 ; 1= 1939 ; 1= 1940
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):24

Collection of

Frank Cuffe (IRL)
Justo Puertas-Paule (E)
Tomasz Szczesniak (PL)
Karlheinz Fischer (D)
Pedro Prieto-Castro (E)
 
tdd13c~~1.jpg

TDD13C
 
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