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

PT4D

Information - Help 
ID = 11546
       
Country:
Great Britain (UK)
Brand: Ferranti, GB
Tube type:  Double Diode-Pentode   Power/Output 
Identical to PT4D = AC2/PenDD
Similar Tubes
Heater different:
  PTSD
First Source (s)
1934 : History of the British Radio Valve to 1940 p. 146 & 189

Base British-7-Pin, old (M7A) (Codex=Nh) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 2 Ampere / Indirect
Description

Pa <8W, 2.5W output into 6500 ohms.

 
Information source Babani, International Radio Tube Encyclopaedia   p. 130 & 131
Wireless World (The), London (WW, 79)   Data Nov 1934
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49

ferranti_pt4d_circuit.png
PT4D: Ferranti Valves, List Wb. 560
Achim Dassow

s_386_g_3.gif PT4D: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20

More ...

Just Qvigstad
ferranti_pt4d_data.png
PT4D: Ferranti Valves List Wb. 560
Achim Dassow

More ...
Usage in Models 1= 1934 ; 3= 1935 ; 6= 1936 ; 3= 1937

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):13


Collection of

 
pt4d.jpg

PT4D
 

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