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DCH21_9pin

Information - Aide 
ID = 31603
       
Pays:
Pays-Bas
Fabricant: Philips; Eindhoven (tubes international!); Miniwatt
Concepteur: Philips; Eindhoven (tubes international!); Miniwatt 
Type:  Triode-Hexode   Changeuse de fréquence   Commande 
  Plus récente mais pas de production grande série
Identique à DCH21_9pin
Similaires
Différent culot :
  DCH21
Successeurs 1941   DCH21  
Culot Loctal-9-Pin (B9G)
Chauffage Vf 1.4 Volt / If 0.15 Ampère / Direct / Battery =
Description

The Philips 21- "Key Base" tubes were initially designed in 1940 with the 9-pin base B9G like the EF50. The later series production from 1942 on however was changed to the 8-pin Locktal-base B8G designed by Sylvania. There are also DCH21's with international octal bases.

 
Bibliographie - - Manufacturers Literature   1940-1941
dch21_9b_r.png DCH21_9pin: original Philips documents
Jacob Roschy

Just Qvigstad 		dch21data1.png
DCH21_9pin: own collection
Peter den Boer † 2025
Plus d'infos ...

Collection de

Jacob Roschy (D)
 
cfh21_9s_r_5.jpg

 
[rmxtube-fr, noindex]
  
Mentions légales Plus d'informations