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B2047

Information - Help 
ID = 2465
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to B2047 = H2618D = NVS183 = VP20 = HP2118 = S2034N = RENS1894
Similar Tubes
Normally replaceable-slightly different:
  20AM1 ; 20AMS ; V3_Ostar
Heater different:
  E447
Other base:
  NVS183_B5+1
First Source (s)
Apr.1933 : Philips Bulletin
May.1933 : L'Histoire Singulière du Tube Radio; G. Duperray 2009
Predecessor Tubes B2045  
Successor Tubes CF2  
Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Fco) Top contact screw type.
Was used by Radio/TV-reception etc.
Filament Vf 20 Volts / If 0.18 Ampere / Indirect / Specified current DC = (Series working)
Description

This tube is listed on page 29 of L'ABCDes Lampes de TSF as type no B2047T. Apart from this, No other source information shows the B2047T. Characteristics appear to be the same.

 
Information source L'ABCDaire des lampes de TSF des jeunes années   p. 29
Babani, International Radio Tube Encyclopaedia   p. 54 & 55
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49
b2047.gif
B2047: ficha de valvulas
Getulio Jimenez-Gomez
13_4.png B2047: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad 		b2047_spec.png
B2047: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector
More ...
Usage in Models 1= 1932? ; 1= 1932 ; 1= 1933? ; 22= 1933 ; 3= 1934? ; 10= 1934 ; 1= 1935 ; 1= 1950??
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):40

Collection of

Patrice Zeissloff (F)
Tomasz Szczesniak (PL)
Wolfgang Bauer (A)
Thomas Lebeth (A)
 
b2047_philips_miniwatt_p01_s.jpg

B2047
 
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