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201A_B4

Información - Ayuda 
ID = 54956
       
País:
Holanda
Marca: Philips; Eindhoven (tubes international!); Miniwatt
Tipo:  Triode, vacuum   Audio Frequency 
  <1925 rare
Idéntica a 201A_B4
Válvulas similares
Otra base:
  201A_Philips

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Usada en Radio/TV-reception etc.
Filamento Vf 5 Volt / If 0.25 Ampere / Direct / Battery =
Descripción

Some Philips tubes sold in Australia have the L & H (Lawrence and Hansen Pty Ltd) logo on the bulb. This company was the original distributor of Philips products until 1926, when Philips opened their own offices..

 
Dimensiones
(Alt,Ancho,Prof.)
incl.pins/tip
45 x 106 x 35 mm / 1.77 x 4.17 x 1.38 inch
Literatura - - Manufacturers Literature   1924
-- Collector info (Sammler)   

b201a_sock.png 201A_B4: RFJ
Roy Johnson

Mas ...

Just Qvigstad
ph201adata.png
201A_B4: own collection
Peter den Boer † 2025

Colección personal de

 
philips_b201a.jpg

Mas ...
 

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