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B424K_SERIE100

Information - Help 
ID = 32027
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  Triode, vacuum 
Identical to B424K_SERIE100
Similar Tubes
Multiple differences or of other kind:
  B424S

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Filament Vf 4 Volts / If 0.1 Ampere / Direct / Battery =
Description Röhre in Metallkapsel (MG-Röhre)
Selektiert für 100 mA Serienheizung 
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
b424k_philips_01.jpg
B424K_SERIE100: Collection TL
Thomas Lebeth

 
triodedirektb4_17.png
B424K_SERIE100: Collection TL
Thomas Lebeth

 


Forum contributions about this tube
B424K_SERIE100
Threads: 1 | Posts: 3
Hits: 1562     Replies: 2
B424K_SERIE100 (B424K_SERIE100)
Peter den Boer
11.Oct.11
  1

I fail to see the difference, electrically, between the B424K_Serie 100, the B424K and the glass type B424. All have a 4 Volt, 0.100 Amp filament (except fot the shielding of the B424K_Serie and B424K).

Mark Hippenstiel
18.Oct.11
  2

Hello Peter,

there has been a discussion about that topic regarding the B442 already. Basically those tubes have been designed for 4V operation, but the "Series 100" have been specifically selected for 100mA heating - while the current on "normal" tubes might vary within production margins.

I see that we perhaps also still have to update the models from Staleman.

Regards
Mark

Jean-Louis HEYD
18.Oct.11
  3

Hello, It should be the anti-microphonic serie, such as A414K, B424K or B438K.

JL

 
B424K_SERIE100
End of forum contributions about this tube

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